Pfc Circuit - Panasonic Generation Plasma Display Television Technical Manual

PFC Circuit

Pin 16 of IC501 also goes low when pin 23 is "high". When pin 16 goes "low", the diode within the photo-coupler
IC401 emits light to turn on the photo-transistor.
Pin 4 of IC401 goes "low". This "low" is applied to the gate of Q401 turning it on to apply 12V to pin 8 of PFC
circuit.
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