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Panasonic M12H power supply circuit

2015-03-18 11:00  
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Panasonic M12H power supply circuit
Oscilation circuit The 300V DC voltage of the C836 adds to the C pole of the internal switching tube of the IC801's pin-1 through the primary windings P1 and P2 of the T801, and it adds to the B pole of the internal switching tube of the IC801's pin-2 through the R803, so the switching tube conducts. The current of E pole flows out from the pin-4 of IC801. The P1 and P2 winding current of T801 increases to produce the induced voltage, and this voltage is coupled with the F2 and F3 windings, the F2 has the positive induced voltage polarity, the F3 has the negative induced voltage polarity. This voltage adds to the pin-2 and pin-4 of the IC801 through the C806 and R804, so the switching current further increases, the strong positive feedback makes the switching tube saturated quickly.