[Input Circuit]
The input current goes into the input rectifier circuit through the filter circuit. The filter circuit
decreases the noise voltage and the noise electric field strength.
[Rectifier Circuit]
The input current is rectified by D101~ D104 and charges C106 to make DC voltage. Then it
supplies power to the converter circuit.
[Kick-on voltage circuit]
Bias is applied to the Q101 gate via this circuit when the AC power is turned on and Q101 begins
operating.
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