[0001]This technology, power supply, also be utilized in the power supply device, a discharge device and a tooth of a method to perform the discharge.
Background technique
[0002]AC and the AC voltage supplied from the commercial power source to full-wave rectification, switching the pulsating input voltage, to generate a desired DC voltage, to supply the load, such as electrical equipment, power supply conventionally used ing. Power supply, for the purpose of noise removal comprises a noise filter including a capacitor. For example, from the plug receptacle of the commercial power supply, if the outlet plug of the power supply is unplugged, in order to safely treat the accumulated residual charge in the capacitor of the noise filter, power-off detection circuit, and the residual charge discharging power supply including a circuit which there are many (e.g., see Patent documents 1 and 2.).
[0003]
　Power-off detecting circuit, for example, an AC voltage supplied from a commercial power source, by the full-wave rectified by the two diodes to obtain a pulsating input voltage. Such power-off detection circuit, generally, it has disappeared pulsating input voltage, or a voltage signal obtained by smoothing the pulsating input voltage by detecting that it has decreased, detecting the interruption of power supply. When power shutdown is detected, the circuit for discharge, via the resistor for the two diodes and the discharge to discharge the capacitor of the input filter (e.g., specification paragraphs Patent Document 1 [0032], [0036 ], see Figure 2).
[0004]
　Meanwhile, the power supply from the commercial power supply by a power failure or instantaneous voltage drop may not be performed stably. To stably supply the power to the electrical device in such a case, uninterruptible power supply (UPS: Uninterruptible Power Supply (Source)) may be used. Figure 1 is a block diagram showing the configuration of a system using the UPS. UPS200 is connected between the commercial power supply and the power supply 101. UPS200 supply, when the interrupted power supply from the commercial power supply, instead of the AC voltage supplied from the commercial power source, an AC voltage generated from The stored electrical energy in the battery in UPS200, the electrical device 300 to.
[0005]
　UPS200 alternating voltage waveform supplied to the electric device 300 may vary depending on the product. 2A shows a sine wave of the AC voltage, for example, by a commercial power supply. Figure 2B, C respectively show an example of the pseudo sine wave output from UPS200. As UPS product, as shown in Figure 2C, there is one that supplies power to the electrical device 300 by the voltage of the rectangular wave.
CITATION
Patent Literature
[0006]
Patent Document 1: JP 2013-27283 JP
Patent Document 2: JP 2012-23832 JP
Summary of the Invention
Problems that the Invention is to Solve
[0007]
　Figure 3A ~ C respectively show the waveforms are waveforms of FIG. 2A ~ C are full-wave rectified. Voltage having a rectangular wave as shown in FIG. 2C, as input to the power-off detection circuit, the waveform full-wave rectified by the two diodes, as shown in FIG. 3C, not the pulsating voltage waveform, DC a voltage. At this time, power-off detection circuit, despite the power from UPS200 is supplied, it is determined that the input of the pulsating voltage is not, erroneously detected as the power supply is interrupted, thereby discharging the capacitor.
[0008]
　The purpose of the present disclosure, regardless of the waveform of the signal obtained by full-wave rectification, the power supply device capable of reliably detecting the presence or absence of interruption of power supply, is to provide a discharge device and discharge methods.
Means for Solving the Problems
[0009]
　To achieve the above object, a discharge device according to an embodiment of the present technology includes a discharge portion, and a cut-off detecting section.
　The discharge unit, based on the voltage of the rectified signal of the AC voltage inputted through an input filter including a capacitor is full-wave rectified, a variable discharge current value, configured to discharge the capacitor.
　The blocking detection unit monitors the voltage of the rectified signal, based on the change of the voltage when discharged at a specific discharge current value by the discharging unit, to detect whether the power supply is interrupted constructed.
[0010]
　By blocking the detection unit, a capacitor with a specific discharge current value of the variable discharge current value change of the voltage of the rectified signal when the discharge is monitored. Accordingly, the discharge device, regardless of the waveform of the rectified signal obtained by full-wave rectification, it is possible to reliably detect whether the power supply is interrupted.
[0011]
　The blocking detection unit may include a pulsating detection circuit, a DC voltage monitoring circuit.
　The pulsating detection circuit, the rectified signal by monitoring the voltage configured to detect whether a pulsating flow.
　The DC voltage monitoring circuit, when the non-pulsating current detected by the pulsating flow detection circuit configured to monitor the voltage of the rectified signal of the non-pulsating flow.
[0012]
　If a non-pulsating flow is detected by the pulsating flow detection circuit, the discharge unit may be configured to discharge the capacitor in the first discharge current value.
[0013]
　The discharge unit, after discharging the capacitor in the first discharge current value, may be configured to discharge the capacitor at a lower than the first discharge current value second discharge current value.
　Accordingly, even when the power from the UPS is supplied, since discharge at lower than the first discharge current value second discharge current value, the operation of the power supply by UPS is continued.
[0014]
　In a state where the capacitor in the second discharge current value is discharged by the DC voltage monitoring circuit, when the voltage of the rectified signal is determined to equal to or less than the threshold value, the discharge portion, the first discharge current it may be configured to discharge the capacitor with a value.
　In a state where the capacitor in the second discharge current value is discharged, when the voltage of the rectified signal is below a threshold, it can be seen that the power supply from the UPS is shut down. Therefore, in this case, the discharge in the first discharge current value, it is possible to complete the discharge process to a safe voltage level to the user.
[0015]
　The discharge unit, after a predetermined time has elapsed from the start of the discharge in the first discharge current value, may be configured to discharge the capacitor in the second discharge current value.
[0016]
　The discharge unit includes a first discharge path having a first resistor may have a second discharge path having a second resistor having a different resistance value than the resistance value of the first resistor.
[0017]
　The first discharge path, the discharge device may be configured to utilize rechargeable constructed charging path.
[0018]
　The discharge unit may have a discharge path having a variable resistance.
[0019]
　The discharge unit includes a current source may have a discharge current control circuit for the discharge current value variably controlled by the current source.
[0020]
　By the capacitor is discharged in different discharge current value at different timings, interrupting detector can monitor how each discharge. Accordingly, the discharge device, regardless of the waveform of the rectified signal obtained by full-wave rectification, it is possible to reliably detect whether the power supply is interrupted.
[0021]
　Power supply device according to an embodiment of the present technology includes an input filter, a converter, a full-wave rectifier, and the discharge device.
　The input filter includes a capacitor.
　The converting unit is configured to AC voltage input via the input filter to convert into a DC voltage.
　The full-wave rectifier is configured to AC voltage input via the input filter to full-wave rectification.
[0022]
　Discharging method according to an embodiment of the present technique includes an AC voltage inputted via the input filter including a capacitor to monitor the voltage of the full wave rectified rectified signal.
　Based on a voltage of the rectified signal, the capacitor at a specific discharge current value of the variable discharge current value is discharged.
　It said capacitor when it is discharged at the specific discharge current value, based on the change in the voltage of the rectified signal, whether the power supply is cut off is detected.
Effect of the invention
[0023]
　Above, according to the present disclosure, regardless of the waveform of the signal obtained by full-wave rectification, it is possible to reliably detect the presence or absence of interruption of power supply.
　Here, the advantages described in the present invention is not necessarily limited, it may be any of the effects described in the present disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024]
[1] Figure 1 is a block diagram showing a configuration of a power supply system using the UPS.
[2] Figure 2A shows a sine wave of the AC voltage by commercial power supply. Figure 2B, C respectively show examples of pseudo-sine wave the UPS output.
3] Fig. 3A ~ C respectively show the waveforms are waveforms of FIG. 2A ~ C are full-wave rectified.
FIG. 4 shows a circuit configuration of a power supply device according to a first embodiment of the present technology.
FIG. 5 shows a configuration of blocking detection unit and the discharge unit shown in FIG.
FIG. 6 is a power supply device shown in FIG. 4, not through the UPS, showing an example of configuration of a power supply system connected to a commercial power source.
FIG. 7 is, in the case of not using the UPS, showing a voltage signal waveforms during the operation of the connected power supply to the commercial power source, respectively.
[8] FIG. 7 depicts connected to a commercial power supply via the UPS, the voltage signal waveforms during the operation of the power supply, respectively.
[9] FIG. 9 shows a configuration of a discharge apparatus of a power supply device according to a second embodiment of the present technology.
[10] FIG. 10 shows a configuration of a power supply device according to a third embodiment of the present technology.
[11] FIG. 11 shows a configuration of a power supply device according to a fourth embodiment of the present technology.
DESCRIPTION OF THE INVENTION
[0025]
　Hereinafter, the embodiments of the present disclosure will be described with reference to the drawings.
[0026]
　1. First Embodiment
[0027]
　1.1) configuration of the power supply unit
[0028]
　Figure 4 shows a circuit configuration of a power supply device according to a first embodiment of the present technology. Power supply 100A is provided with an input filter circuit 10, converter 30, full-wave rectifier 20 for voltage monitoring, ACDC control circuit 39, voltage dividing resistors Ra, Rb, the discharge device 40. Power device 100A, the input side, the commercial power supply, not shown, is configured to be connected for example to a power outlet, configured to allow connection to the electric device 300 on the output side. AC voltage of the commercial power source is, for example, 100 V ~ 240V.
[0029]
　Input filter circuit 10 has a function of removing noise included in the AC voltage input. Input filter circuit 10 includes, for example, a common mode choke coil L provided to the first line (Line) 11 and a second line (Natural) 12, constituted by a capacitor C. These capacitors C is referred to as X capacitor or across-the-line capacitor. Input filter circuit 10 is not limited to the configuration shown in FIG. 4, may take a variety of circuit configurations known.
[0030]
　Converter 30 includes a rectification section 32 and the ACDC circuitry 34. Rectifying section 32 is configured to AC voltage for example, input bridge diode having the function of full-wave rectification. ACDC circuit 34 includes a smoothing circuit for smoothing the DC voltage of the rectified pulsating current by the rectifier unit 32, and a transformer that converts the smoothed DC voltage by the smoothing circuit to a desired voltage value. Smoothing circuit and the transformer is not shown.
[0031]
　ACDC control circuit 39 has a function of controlling the ACDC circuit 34, for example to control the output voltage from the ACDC circuit 34 by the switching control.
[0032]
　Full-wave rectifier 20 for voltage monitoring, has the function of an AC voltage output from the input filter circuit 10, full-wave rectification. Full-wave rectifier 20 includes two diodes 21. The anode of the diode 21 is connected to the first line 11 and second line 12, their cathode is connected to the discharge portion 60 of the discharge device 40, also the discharge device via the voltage dividing resistors Ra It is connected to the 40. Such a structure of the full-wave rectifier 20, a full-wave rectified rectified signal, as shown in FIG. 3A, has a pulsating waveform.
[0033]
　The discharge device 40 has a cut-off detecting section 50 (monitor) and above the discharge unit 60. Dividing resistors Ra, Rb is, the voltage of the rectified signal, divides below the breakdown voltage level with the blocking detection unit 50. Voltage of the divided rectified signal, the voltage signal for monitoring is input to the cut-off detecting section 50 as a (hereinafter, the monitoring signal referred to).
[0034]
　5 mainly shows the configuration of a cut-off detecting section 50 and the discharge unit 60. Blocking detection unit 50 has a pulsating detection circuit 52, a DC voltage monitoring circuit 54 and the discharge signal generating circuit 56. Blocking detection unit 50 monitors the voltage of the monitor signal to be input, when it is discharged at a specific discharge current value by the discharging unit 60, based on a change of the voltage of the monitor signal, whether the power supply is interrupted It is configured to detect.
[0035]
　Pulsating detection circuit 52 has a function of monitoring signals to detect whether or not pulsating. For example, pulsating detection circuit 52, not shown, having a timer, and one or more comparators. The comparator has a function of comparing the voltage with a reference voltage of the monitor signal. The reference voltage is set, for example, to a value between 40% and 80% of the maximum value of the monitoring signal (pulsating voltage).
[0036]
　For example, pulsating detection circuit 52 within the set period of the timer, the monitored signal voltage falls below the reference voltage, and greater than if satisfied any one condition of things, the monitoring signal is pulsating It can be detected. On the other hand, within a set period of the timer, the monitored signal voltage falls below the reference voltage, and if conditions are satisfied that both is not that exceed, can detect that the monitoring signal is a non-pulsating flow.
[0037]
　Pulsating detection circuit 52 includes a plurality of comparators, these comparators may be configured to use a different reference voltages, respectively. In this case, the monitoring signal voltage, to below the minimum value of those different reference voltages, and one of the conditions of the exceed the maximum value of the different reference voltages if satisfied, the monitoring signals in pulsating flow that there, pulsating detection circuit 52 can detect.
[0038]
　Alternatively, pulsating detection circuit 52, for example by using the AD converter of the delta modulation type, or parallel comparison type (flash) may have a structure for detecting the presence or absence of pulsation.
[0039]
　DC voltage monitoring circuit 54, the pulsating flow detection circuit 52, as the monitor signal to be input when it is detected that a non-pulsating flow, monitors the voltage of the monitor signal of the non-pulsating flow (DC) It is configured. DC voltage monitoring circuit 54 has, for example, a comparator, by comparing the reference voltage with the (threshold voltage) and a monitoring signal voltage, the monitoring signal voltage, detects that a threshold voltage less. Threshold voltage, for example, is set to a value between 40% and 60% of the maximum value of the monitoring signal.
[0040]
　Discharge signal generating circuit 56, when it monitors the signal by the pulse current detecting circuit 52 is a non-pulsating flow is detected, or when the voltage of the monitor signal is equal to or less than the threshold value by the DC voltage monitoring circuit 54, a discharge signal generate, and outputting it to the discharge unit 60. The discharge signal generating circuit 56 has a function of determining the resistance value of the variable resistor Rv of the discharge portion 60.
[0041]
　Discharge unit 60 includes, for example, a variable resistor Rv and a switch 63 described above, having a connected discharge path D to ground. Discharge unit 60, the switch 63 is turned ON by the discharge signal outputted from the discharge signal generating circuit 56, any resistance value set by the discharge signal generating circuit 56, i.e. the discharge at any discharge current value performed. Thus, the residual charge of the capacitor C is discharged.
[0042]
　In FIG. 1, it blocked the detection unit 50, at least one of the discharge portion 60 and the ACDC control circuit 39 may be constituted by IC (Integrated Circuit). Also, at least two of them may be composed of one of the IC.
[0043]
　1.2) operation of the power supply unit
[0044]
　1.2.1) If you do not use the UPS
[0045]
　6, power supply apparatus 100A of the present embodiment, without using the UPS, showing an example of configuration of a power supply system connected to a commercial power source. Figure 7 shows the case of not using the UPS, a voltage signal waveforms during the operation of the power supply device 100A connected to a commercial power source, respectively.
[0046]
　In Figure 7, (input signal to full-wave rectifier 20) the input signal of the AC voltage from above, showing a monitoring signal, a discharge signal 1, and the discharge signal 2. Hi level of the discharge signal 1 indicates the ON signal is input to the switch 63 in a state of being set to a relatively low resistance value variable resistor Rv (corresponding to the first discharge current value). Hi level of the discharge signal 2 shows the ON signal is input to the switch 63 in a state of being set to a relatively high resistance value variable resistor Rv (lower than the first discharge current value corresponding to the second discharge current value). A relatively low resistance value, is set, for example kΩ order (e.g. 60 k-ohms). As a relatively high resistance value, it is set, for example MΩ order (e.g., 1 M.OMEGA).
[0047]
　As shown in FIG. 7, for example, at the timing t1 level maximum monitor signal, the missing power failure or outlet plug, and power (power supply) is interrupted. The timing of the power interruption, it matches the maximum level of the timing of the monitoring signal is merely one example.
[0048]
　When the power by omission failure or outlet plug is cut off, the electric charge remaining in the capacitor C, because the constant voltage during power-off is maintained, the monitoring signal may indicate a predetermined voltage value. In this case, pulsation detection circuit 52, for example, the setting period of the timer (for example, several tens ms) in a monitor signal voltage is detected not to exceeds or falls below the reference voltage, the monitoring signal is a non-pulsating flow judge.
[0049]
　In the timing t2 after a lapse of a set period of the timer, the discharge signal generating circuit 56, a discharge signal 1 for discharging the capacitor C in the first discharge current value, and outputs to the switch 63 of the discharge unit 60. The output of the discharge signal 1 is continued until the timing t3. Its period is set to more than the period specified in the national laws and regulations (1 ~ 2s), the capacitor C is discharged within this time period.
[0050]
　Thus, if you do not use UPS, by one of the discharge by the first discharge current value (the second discharge current value is not used), it is possible to perform discharge to a safe voltage level to the user.
[0051]
　1.2.2) If you want to use the UPS
[0052]
　Next, the operation of the power supply 100A for the case of using UPS200. Example of a system configuration in this case is as shown in Figure 1. In other words, the power supply apparatus 100A of the present embodiment is connected between the UPS200 and the electric device 300. Figure 8 shows a voltage signal waveform at the time of operation, respectively. UPS200 output waveform of the AC voltage here is a square wave.
[0053]
　At timing t1, when the power supply by alternating current from the commercial power source is interrupted, UPS200 detects it. Here, as an example, when the voltage is substantially zero, it is assumed that power is interrupted. UPS200 detects the power-off, at a timing t1 ', starts the output of the AC voltage by a rectangular wave. The period from t1 to t1 'is, by function and the setting of UPS200.
[0054]
　As described above, when the rectangular wave is full-wave rectified by the full-wave rectifier 20, the signal is a DC signal of a non-pulsating flow. In this case, similarly to the embodiment, pulsation detection circuit 52 shown in FIG. 7, 'from (in this case, the timing t1' timing t1 or t1 from), within a set period of the timer (for example, several tens of ms), the input monitoring signal is detected to be non-pulsating flow. Thus, pulsating detection circuit 52, at timing t2, and outputs a discharge signal 1 for discharging the capacitor C in the first discharge current value, discharge is performed by the discharge unit 60.
[0055]
　8 shows, a period from the timing t1 'to t2 is, an example that corresponds to one cycle of the rectangular wave of UPS200, this is only one example.
[0056]
　Be discharged in the first discharge current value is performed, because it is continuous power supply by UPS200, even after the timing t2, the voltage of the monitor signal is outputting a constant value without change substantially.
[0057]
　The timer setting by pulsating detection circuit 52, after the lapse of the time t2 predetermined time (e.g., 1 ~ 2s), the discharge signal generating circuit 56, at timing t3, the capacitor lower than the first discharge current value second discharge current value and it outputs a discharge signal 2 for discharging the C. Be performed is discharged at a low second discharge current value, since the power supply by UPS200 is continued, albeit predetermined voltage drop, the input is continued to the discharge device 40 of the DC voltage of the non-pulsating . That is, in this case, blocking the detection unit 50, it can be determined that power is not interrupted.
[0058]
　The second discharge current value (resistance value by the corresponding variable resistor Rv in), even if there due to the voltage drop it, the continuation of the power supply by UPS200, the value of the degree of operation of the electrical device 300 can be continued It is set.
[0059]
　In a state where UPS200 is supplying power to the power supply devices 100A, for monitoring the signal is non-pulsating DC voltage monitoring circuit 54 monitors the monitoring signal voltage. Then, when the power supply from the timing t4 UPS200 is interrupted, the discharge device 40 operates as follows.
[0060]
　Before and after the timing t4, continuously discharge signal 2 is output, discharge is performed in the second discharge current value. Therefore, when (timing t5) of the power supply is cut off from UPS200, the voltage gradually input voltage and monitoring signal gradually decreases. When the monitoring signal voltage by the DC voltage monitoring circuit 54 that is equal to or less than the threshold value TH is detected, the discharge signal generating circuit 56, a discharge signal 2 is stopped, and it outputs a discharge signal 1. That is switched from the second discharge current value to the first discharge current value. Thus, the capacitor C is discharged by the first discharge current value, discharge treatment to a safe voltage level for the user is completed.
[0061]
　Note that when a is the power supply from UPS200 is interrupted, for example, when the remaining amount of the battery in UPS200 runs out substantially, or, like if there is a lack of outlet plug of the power supply 100A from UPS200 It is.
[0062]
　In the present embodiment, after the discharge by the discharge signal 1 at the timing t2 is started, the discharge signal 2 is outputted within a predetermined time. However, after the discharge by the discharge signal 1 at the timing t2 is started, the DC voltage monitoring circuit 54 monitors the monitoring signal voltage, interrupting detection unit 50, based on the detected voltage (a change in), interruption of the power supply (here in can be detected whether there is a power-off) from UPS200. If power shutdown from UPS200 is determined that there is no, as indicated in the timing t2 in FIG. 7, when the power supply from UPS200 is being performed, the discharge signal generating circuit 56 stops the discharge signal 1, the discharge signal 2 may be output.
[0063]
　Change in the monitor signal voltage when more than in the embodiment as described above, the capacitor C is discharged at a specific discharge current value of the variable discharge current value (current value first person or the second discharge current value) There is monitored. Therefore, blocking the detection unit 50, regardless of the waveform of the rectified signal obtained by full-wave rectification, it is possible to reliably detect whether the power supply is interrupted.
[0064]
　Further, the common power supply (variable discharge current value power supply without a), is cut off the power supply from the commercial power source, UPS200 is during operation, continuing the discharge at a large constant discharge current value become. Accordingly, large power loss during operation of UPS200, there is also the problem of heat generation. In contrast, in the power supply apparatus 100A according to this embodiment, by setting the resistance value of the variable resistor Rv corresponds to the second discharge current value appropriately, which by reducing the power loss (for example, about several tens of mW) can be, it does not occur the problem of heat generation can be suppressed.
[0065]
　2. Second Embodiment
[0066]
　Next, there will be described a power device according to a second embodiment of the present technology. In the following description, the substantially similar ones for the elements and their function for the power supply device 100A according to the first embodiment includes the same reference numerals, explanation simplified or omitted the different points It will be described in the center.
[0067]
　Figure 9 shows a configuration of a discharge device 80 according to this embodiment. Configuration other than the discharge device 40 is similar to the discharge device 40 according to the first embodiment. Discharge device 80, as in the first embodiment, has a cut-off detection unit 150 and the discharge portion 120. Discharging unit 120 includes a plurality of discharge paths, in the present embodiment has a first discharge path D1 and the second discharging path D2 as two discharge paths. The first discharge path D1 and the second discharge path D2 is, for example, connected in parallel to the output side of the full-wave rectifier 20 (see FIG. 4).
[0068]
　The first discharge path D1 has a first resistor R1 and the first switch S1 fixed. The second discharge path D2 includes a second resistor R2 and a second switch S2 of the fixed. Resistance of the first resistor R1 is different from the resistance value of the second resistor R2. Specifically, the resistance value of the first resistor R1 is smaller than the resistance value of the second resistor R2. For example the resistance value of the first resistor R1 is set to kΩ order (e.g. 60 k-ohms). Resistance of the second resistor R2 is set to, for example MΩ order (e.g., 1 M.OMEGA).
[0069]
　Pulsating detection circuit 52 is configured to output a discharge signal 1 to the first switch S1 of the first discharge path D1. Further, the DC voltage monitoring circuit 54 is configured to output a discharge signal 2 to the second switch S2 of the second discharge path D2. Pulsating detection circuit 52 and the DC voltage monitoring circuit 54, in operation similar to the timing shown in FIGS. 7 and 8, by outputting them discharge signal 1 and 2, respectively, similar to the above first embodiment functions and effects.
[0070]
　3. Third Embodiment
[0071]
　Figure 10 shows a configuration of a discharge apparatus of a power supply device according to a third embodiment of the present technology. Discharge path D provided in the discharge portion 130 of the discharge device 90 of the power supply device 100B includes a current source 134. Discharge device 90 includes a discharge current control circuit 132, the discharge current control circuit 132 receives an output signal from the blocking detection unit 150 generates a control signal of the discharge current, and outputs it to the current source 134 It is configured to. The discharge current control circuit 132, the output signal from the pulsating detection circuit 52 and the DC voltage monitoring circuit 54 of the shut-off detection unit 150 are inputted.
[0072]
　Current source 134 is a variable discharge current value in accordance with a control signal from the discharge current control circuit 132 has a function of discharging the residual charge of capacitor C. As a control signal from the discharge current control circuit 132, for example, the control signal 1 and the control signal 2 is set. Hi level control signal 1 corresponds to Hi level of the discharge signal 1 of the above embodiment, the Hi level control signal 2 corresponds to the Hi level of the discharge signal 2 of the above embodiment. When both control signals 1 and 2 are Lo level, the discharge current value by the current source 134 is set almost 0A.
[0073]
　Thus configured discharge device 90, based on the output signal from the blocking detection unit 150, in operation similar to the timing shown in FIGS. 7 and 8, the operation to output them control signals 1 and 2 can do.
[0074]
　4. Fourth Embodiment
[0075]
　Figure 11 shows a configuration of a discharge apparatus of a power supply device according to a fourth embodiment of the present technology. Discharge portion 140 of the discharge device 110 of the power supply device 100C has a discharge path D1 and discharge path D2. Discharge path D2 includes a resistor R2 having a relatively high resistance value (e.g. MΩ order), and a switch S2. Switch S2 of the discharge path D2, as in the above embodiments, it is turned ON by the discharge signal 2.
[0076]
　Discharge path D1 is at the start of power supply 100C (discharge device 110), supplies power to the VCC via the full-wave rectifier 20 to charge the capacitor C1. Energy of the capacitor C1, ACDC circuit 34 is activated by driving the ACDC control circuit path 39. When the activation of the ACDC circuit 34 is completed, included in the ACDC circuit 34, the auxiliary winding of the transformer; by which power is supplied to the VCC pin from (AUX Auxiliary), the capacitor C1 is charged.
[0077]
　Discharge path D1 has the output side of the full-wave rectifier 20, connected in parallel with the second discharge path D2, the starting circuit 141 to start the discharge device 110. Starting circuit 141 is connected to the ground via the VCC terminal and the capacitor C1, also via a line not shown, is connected to the starting coil of the ACDC circuit 34. Starting circuit 141 includes a resistor for discharge (not shown) (functions as a first resistor having a relatively low resistance value).
[0078]
　Start control circuit 142 is a circuit for controlling the starter circuit 141. Logical operation circuit 143, when receiving the control signal from the start control circuit 142, or upon receiving a signal from the pulse current detecting circuit 52, and turns ON the switch 63 in the start-up circuit 141. That is, the starting circuit 141, when the logical operation circuit 143 receives a control signal from the start control circuit 142, to function discharge path D1 as charging path. On the other hand, the starting circuit 141, when the logic operation circuit 143 which receives the discharge signal 1 from the cut-off detection unit 150 (pulsating detection circuit 52) ​​utilizes a charging path as the discharge path D1, to discharge.
[0079]
　Configured discharge device 110 as described above, based on the output signal from the blocking detection unit 150, in operation similar to the timing shown in FIGS. 7 and 8, to output them control signals 1 and 2 it is possible to operate.
[0080]
　Charging path and a starting circuit 141, might be provided to a general product, the discharge device 110 according to this embodiment, by utilizing these charge path and start-up circuit 141, a separate new discharge path D1 there is an advantage in that it is not necessary to provide.
[0081]
　5. Various other embodiments
[0082]
　The present disclosure is not limited to the embodiments described above, it is possible to realize other various embodiments.
[0083]
　In the above embodiments, although an example of two-stage high discharge current value and a low discharge current value as a variable discharge current value, the discharge current value of three or more stages may be set.
[0084]
　Typical examples of the electrical equipment 300, PC and the like, but other servers, appliances or may be a device that does not have a computer functions.
[0085]
　Of characteristic portion of each embodiment described above, it is also possible to combine at least two characteristic parts.
[0086]
　The present technology may also be configured as follows.
(1)
　based on the voltage of the rectified signal AC voltage inputted via the input filter is full-wave rectified including a capacitor, a variable discharge current value, and configured discharge part to discharge the capacitor,
　monitors the voltage of the rectified signal, based on said change in the voltage, interrupting detection unit configured to detect whether the power supply is interrupted when it is discharged at a specific discharge current value by the discharging unit DOO
　discharge apparatus comprising.
(2)
　The discharge apparatus according to (1),
　the blocking detection unit,
　　the voltage configured pulsating detection circuit so that the rectified signal and detects whether a pulsating flow by monitoring the when,
　　the pulsating when the non-pulsating current detected by the detection circuit, and a DC voltage monitoring circuit configured to monitor the voltage of the rectified signal of the non-pulsating flow
　discharge devices.
(3)
　The discharge apparatus according to (2),
　if the non-pulsating current detected by the pulsating flow detection circuit, wherein the discharge unit is configured to discharge the capacitor in the first discharge current value It is
　the discharge device.
(4)
　The discharge apparatus according to (3),
　said discharge portion, said after discharging the capacitor at a first discharge current value, the in the second discharge current value lower than the first discharge current value configured to discharge the capacitor
　discharge unit.
(5)
　the A discharge device according to (4),
　in a state where the capacitor in the second discharge current value is discharged by the DC voltage monitoring circuit, the voltage of the rectified signal is equal to or less than the threshold value If it is determined that, the discharge unit is configured to discharge the capacitor in the first discharge current value
　discharging device.
(6)
　the a discharge device according to (4) or (5),
　wherein the discharge unit, after a predetermined time has elapsed from the start of the discharge in the first discharge current value, the second discharge current value in configured to discharge the capacitor
　discharge unit.
(7)
　The discharge apparatus according to any one of (1) to (6),
　wherein the discharge unit includes
　　a first discharge path having a first resistor,
　　the resistance value of the first resistor and a second discharge path having a second resistor has a different resistance value
　and discharge device.
(8)
　The discharge apparatus according to (7),
　said first discharge path is configured to utilize a rechargeable-configured charge path the discharge device
　discharge device.
(9)
　the a discharge device according to any one of (1) to (6),
　wherein the discharge unit includes a discharge path having a variable resistance
　discharge device.
(10)
　The discharge apparatus according to any one of (1) to (6),
　wherein the discharge unit includes
　　a current source,
　　and a circuit for variably controlling the discharge current value by the current source having a
　discharge device.
(11)
　an input filter including a capacitor,
　and a converting unit configured to convert the AC voltage input via the input filter to a DC voltage,
　a full-wave AC voltage input via the input filter a full-wave rectifier configured to rectify,
　and the full-wave based on the voltage of the rectified signal obtained by the rectifier unit, variable in discharge current value, the discharge portion of the capacitor is configured to discharge,
　the It monitors the voltage of the rectified signal, and wherein based on the change of the voltage, interrupting detection unit configured to detect whether the power supply is interrupted when it is discharged at a specific discharge current value by the discharging unit
　power apparatus comprising a.
(12)
　AC voltage inputted through an input filter including a capacitor to monitor the voltage of the full wave rectified rectified signal,
　based on the voltage of the rectified signal, the specific discharge current value of the variable discharge current value in discharging the capacitor,
　when the capacitor is discharged by the specific discharge current value, based on the change in the voltage of the rectified signal, detects whether the power supply is cut off
　discharge method.
DESCRIPTION OF SYMBOLS
[0087]
　10 ... input filter circuit
　20 ... full-wave rectifier
　30 ... conversion unit
　40,80,90,110 ... discharge device
　50, 150 ... blocking detection unit
　52 ... pulsating detecting circuit
　54 ... DC voltage monitoring circuit
　56 ... discharge signal generating circuit
　60,120,130,140 ... discharge unit
　100A, 100B100C ... power supply
　132 ... discharge current control circuit
　134 ... current sources
　200 ...
　UPS 300 ... electric device
　C ... capacitor
　D, D1, D2 ... discharge path
　Rv ... variable resistor

claims

[Claim 1]Based on the voltage of the rectified signal AC voltage inputted via the input filter is full-wave rectified including a capacitor, a variable discharge current value, a discharge unit configured to discharge the capacitor,
　the rectifying signal the voltage monitor, based on the change of the voltage when discharged at a specific discharge current value by the discharging unit, and the shut-off detection unit power supply is configured to detect whether the blocked
　equipped with discharge device to be.
[Claim 2]
　A discharge device according to claim 1,
　wherein the blocking detector,
　　a pulsating detecting circuit the rectified signal by the monitoring of the voltage is configured to detect whether or not pulsating,
　　the pulse If a non-pulsating flow is detected by the flow detection circuit, and a DC voltage monitoring circuit configured to monitor the voltage of the rectified signal of the non-pulsating flow
　discharge devices.
[Claim 3]
　A discharge device according to claim 2,
　if the non-pulsating current detected by the pulsating flow detection circuit, wherein the discharge unit is configured to discharge the capacitor in the first discharge current value
　discharging device .
[Claim 4]
　A discharge device according to claim 3,
　wherein the discharge portion, after discharging the capacitor in the first discharge current value, discharging the capacitor at a lower than the first discharge current value second discharge current value configured as
　discharge devices.
[Claim 5]
　A discharge device according to claim 4,
　wherein the capacitor in said second discharge current value in a state of being discharged by the DC voltage monitoring circuit, the voltage of the rectified signal is determined to equal to or less than the threshold value If, the discharge unit is configured to discharge the capacitor in the first discharge current value
　discharging device.
[Claim 6]
　A discharge device according to claim 4,
　wherein the discharge unit, after a predetermined time has elapsed from the start of the discharge in the first discharge current value, so as to discharge said capacitor in said second discharge current value configured
　discharge device.
[Claim 7]
　A discharge device according to claim 1,
　wherein the discharge unit includes
　　a first discharge path having a first resistor,
　　a second discharge having a second resistor having a different resistance value than the resistance value of the first resistor and a path
　discharging device.
[8.]
　A discharge device according to claim 7,
　wherein the first discharge path, chargeable-configured configured to utilize the charge path the discharge device
　discharge device.
[Claim 9]
　A discharge device according to claim 1,
　wherein the discharge unit includes a discharge path having a variable resistance
　discharge device.
[Claim 10]
　A discharge device according to claim 1,
　wherein the discharge unit includes
　　a current source,
　　and a circuit for controlling the discharge current value by the current source variable
　discharge device.
[Claim 11]
　An input filter including a capacitor,
　and a converting unit configured to convert the AC voltage input via the input filter to a DC voltage,
　an AC voltage inputted via the input filter to full-wave rectification a full-wave rectifier that is configured to,
　based on the voltage of the rectified signal obtained by the full-wave rectifier, a variable discharge current value, a discharge unit configured to discharge the capacitor,
　of the rectified signal It monitors the voltage, based on the change of the voltage when discharged at a specific discharge current value by the discharging unit, and the shut-off detection unit power supply is configured to detect whether the blocked
　comprising a power supply.
[Claim 12]
　Monitors the voltage of the rectified signal AC voltage inputted via the input filter is full-wave rectified including a capacitor,
　based on the voltage of the rectified signal, the capacitor at a specific discharge current value of the variable discharge current value discharging the,
　when the capacitor is discharged by the specific discharge current value, based on the change in the voltage of the rectified signal, detects whether the power supply is cut off
　discharge method.