The power supply of Jinxing C6458

Published:2011/6/10 1:02:00 Author:Seven | Keyword: power supply, Jinxing | From:SeekIC

Oscillating process:After being stepped down by R804 and TH803, and then stabilized by ZD801, the 220v AC current becomes a voltage of about 12V, and it is delivered to 16-pin of IC801 by D806 and R806 as the oscillation starting voltage, when the voltage on 16-pin is higher that 10.3v, the circuit starts to oscillate. The 14-pin outputs the motivating pulse which is added to the base electrode by D817,D819~D821, and a 300v DC voltage is imposed on the 1-pin of the switch transformer, the integrated pole of Q801 is connected with 3-pin of the switch transformer, then a AC pulse current is generated between 1-pin and 3-pin.



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