JPS54144923A - Switching regulator - Google Patents

Abstract

PURPOSE: To make two stabilized outputs independently obtainable with the control operated at the primary side of a small quantity of current, by taking out a two- circuit output from a one-unit circuit including one transformer, further by independently making an adjustment with two sets of feed-back circuits.

CONSTITUTION: Each reverse phase half-wave power of both polarity pulse, applied to the primary winding 40 of a transformer 41, is taken out from two sets of secondary windings 42A, 42B that are independent and wound in a reverse phase to each other, with an output VA, VB obtained through a half-wave rectifying smoothing circuit 9A, 9B. And the output VA, VB is independently compared with the reference voltage, being fed back through a transmission circuit 6A, 6B, and synthesized with the output of an oscillator circuit 3, with a DC/AC inverter circuit 2 controlled. Consequently, a two-circuit output can be independently obtained by one unit constitution, simultaneously with a switching element of small capacity usable, thus capable of producing the device at low cost.

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