The present application describes a current regulator for providing a regulated current from an input voltage. The current regulator comprises a voltage regulator circuit operable to provide a regulated voltage which comprises a plurality of Zener diodes connected in parallel.

A ballast circuit suitable for driving an LED or similar load comprises a primary switch mode converter means for measuring a modulation such as a phase cut as used for dimming light levels on an input AC supply a current regulator positioned in series with the load and a feedback controller for controlling operatio...

The present application describes a driver circuit for supplying a drive current to an LED lighting scheme. In particular, the present invention relates to an AC input driver circuit operable in conjunction with a current regulator device which utilizes a plurality of Zener diodes connected in parallel combinations....