The self-motivation switch regulated power supply (1)

Published:2011/7/21 1:37:00 Author:Borg | Keyword: self-motivation switch, regulated power supply | From:SeekIC

In the figure is the self-motivation switch regulated power supply circuit, which consists of the switch power tube VT2, pulse width modulator VT3, fault amplifier tube VT4, over-current protection silicon switch VT1 and pulse transformer T1, etc. And the switch tube is also the interval oscillator. VT2, Tl, R2～R5 compose the transforming interval oscillator. After the power is on, the DC high voltage provides a proper positive bias voltage for VT2 basic electrode after the voltage is stepped down by R2~R5, so TV2 is conducting.



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