APPARATUS FOR CONTROLLING BLEED SWITCH, POWER SUPPLY, AND METHOD FOR DRIVING POWER SUPPLY

摘要

PURPOSE: An apparatus for controlling a bleed switch, a power supply, a driving method thereof are provided to prevent the flicker of an LED device controlled by a traic dimmer. CONSTITUTION: A bridge diode(BD) comprises four diodes. An input capacitor(C2) stabilizes a rectified AC voltage. A bleed switch control unit(100) generates a bleed switch control signal(Vg) by using a source voltage(V1) of a power switch(T1). A transformer(Tx) includes a primary coil(Co1) and a secondary coil(Co2). A bleed switch circuit(200) includes a resistor, a high voltage switch, and a bleed resistor.