Switching regulator

Details Switching regulator Switching regulator

H - Electricity

02

M

321/83

H02M 7/217 (2006.01) H02M 3/338 (2006.01)

Patent

CA 1205131

SWITCHING REGULATOR Abstract of the Disclosure A self-excited switching type D.C. power supply for producing a stabilized output signal. The power supply is provided with a rectifier, a primary winding of a transformer, a switching transistor and a resistor connected in series with one another between first and second input terminals of the power supply. The transformer is further provided with a secondary winding, a Zener diode, a capacitor and a resistor connected in series with a photocoupler. The photo- coupler is connected in series with a pair of control transistors which control the operation of the switch- ing transistor. The switching frequency of the switching transistor is varied in accordance with the time it takes for the capacitor to discharge through the photocoupler.

452604

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