Published:2011/6/10 1:10:00 Author:Seven | Keyword: switch power supply | From:SeekIC
Oscillating process:When BG311 is saturated, the current in coils of 4 and 6 is linearly magnified and B301 is saving the field power. The current on E pole of BG311 runs across R330 and generates a linearly magnified sawtooth voltage, the the voltage runs across the 2-pin of A301 by C330 and makes the two control pipes in the 2-pin conducting, after the current on B pole of BG311 is distributed by 3-pin of A301, while the voltage on the negative pole of C330 is also added to the B pole of BG311 by A301 2- and 3-pin, finally, bg311 quits from the saturated state.
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