Sanyo 83P power supply circuit

Published:2011/8/31 22:05:00 Author:TaoXi | Keyword: Sanyo, 83P, power supply circuit | From:SeekIC

Oscillation process: The 300V voltage of the positive port of C310 adds to the B pole of the switch tube BG311 through the R311 and R312, at the same time the No.4 and No.6 windings of the switching transformer B301 add to the C pole of BG311, the switch tube starts to conduct, the No.2 and No.3 windings of B301 produce the positive feedback voltage of No.2 positive and No.3 negative, this positive feedback voltage adds to the B pole of BG311 through the R335, D335, C333, the BG311 saturates rapidly. After the BG311 is saturated, the current of the No.4 and No.6 windings of B301 increases linearly, the B301 stores the magnetic energy. The E pole current of BG311 gets through the R330 and produces the linear-increasing sawtooth voltage on R330.



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