Description:The Mobile Phone Detector Circuit is a sophisticated electrical device that was developed to identify the presence of active mobile phones emitting radio frequency (RF) signals within a range of 1.5 metres. It does this by scanning the area for phones that are transmitting these signals. It is made up of a variety of components, the most important of which is the LM358 Dual Op-Amp IC (101), which serves as a frequency detector to determine the source of RF signals coming from mobile devices. The flow of current through the system is controlled by resistors (102, 103, and 104), which are part of the circuit that has been designed to capture and transmit RF signals using capacitors (106, 107). The output of the LM358 is connected to a BC548 NPN Transistor (108), which enables operation of a 5mm Red LED (109), which acts as an indication for detected RF activity. In addition, a 2.2 megaohm potentiometer (105), which may be used to fine-tune the detecting circuit's sensitivity range and enable customization for a variety of different environmental circumstances, is included in the package. The RF signals that are transmitted by mobile phones can be picked up by the circuit, which is powered by a 4.5V Battery (111) and employs a 15cm Single Strand Wire Antenna (110) to do so. When radio frequency (RF) activity is detected, the LED lights up to provide a visible signal to the user, indicating the presence of a mobile device that is being actively used. This system is versatile and has the potential to be applied in a variety of contexts, such as in security systems or other locations where it is vital to monitor the use of mobile phones. , Claims:We Claim:
1. A Mobile Phone Detector circuit that contains an LM358 Dual Op-Amp IC (101) and is programmed to detect radio frequency (RF) signals that are broadcast by active mobile phones within a range of 1.5 metres is described.
2. The circuit described in claim 1 also includes a capacitor designated as C1 (106) that is designed to absorb and transfer RF signals to the input of the LM358 Op-Amp IC so that they can be processed.
3. A detection system that incorporates a BC548 NPN transistor (108) coupled to the output of an LM358 Op-Amp, which controls the illumination of a 5mm Red LED (109) upon detecting RF signals that are transmitted by mobile phones, according to the claims made in claim 1.
4. The detection circuit described in claim 1, which includes a 2.2M potentiometer (105) that acts as an adjustable resistor (RV1) and allows for the sensitivity levels of the detection circuit to be fine-tuned, allowing for the detection circuit to be customised to suit particular detection needs.
5. A Mobile Phone Detector circuit using a 15cm Single Strand Wire Antenna (110) to receive and transfer RF signals emitted by mobile phones for detection inside the circuit, as detailed in claims 1 through 4