LED LED LED ILLUMINATION DIMMING CIRCUIT AND LED ILLUMINATION DIMMING METHOD

摘要

The LED illumination light modulation circuit includes a capacitor having one end connected to the first output terminal and the other end connected to the second output terminal, a coil having one end connected to the other end of the capacitor, a switch element having one end connected to the other end of the coil, A diode whose one end is connected to the other end of the switch element and whose other end is connected to the ground terminal, a diode whose cathode is connected to the power supply terminal and whose anode is connected to the other end of the coil, And a control circuit for controlling the operation of the switch element by the switch control signal in accordance with the detection voltage according to the voltage drop of the resistor and the detection current flowing through the coil.