Power supply circuit for LED illumination device in electric household appliance, has transformer providing output signal to its output, and limiter circuit connected to output to limit limiter output signal value to predetermined value

摘要

The circuit (2) has a power supply transformer (3) providing an output signal (V-ST) from an input signal (V-ET) to its output. A limiter circuit (5) is connected to the output of the power supply transformer to limit a value of an output signal (V-SL) of the limiter to a predetermined value. The limiter circuit has a detector element i.e. zener diode, that detects a signal level at an output of the limiter. The zener diode has a cathode that is connected to a terminal of an interruptor element i.e. MOSFET.