Light beam excitation type non-linear negative feedback swiching voltage regulator

Abstract

The invention discloses a light beam excitation type non-linear negative feedback swiching voltage regulator, mainly composed of a diode rectifier U, a power amplifier P1, a transformer T, a switch filtering circuit serially connected between the diode rectifier U and the power amplifier P1, a power output circuit connected to the vice side coil L2 of the transformer T, a transformation feedback circuit connected to the vice side coil L3 of the transformer T, a non-linear negative feedback circuit connected to the transformation feedback circuit, a PWM controller connected to the power amplifier P1, and a sliding adjustor, the output end of which is connected to the tap of the primary side coil L1 of the transformer while the input end thereof is connected to the output end of the power amplifier P1. According to the non-linear characteristic of the non-linear negative feedback circuit, the adjusting pipe is located at the edge of the saturation region automatically, the circuit self and external radio frequency interference of the circuit can be effectively reduced, and the circuit structure is greatly simplified, so the manufacturing cost and the maintenance cost are greatly reduced.

Description

technical field [0001] The invention relates to a switch stabilized voltage power supply, in particular to a light beam excited nonlinear negative feedback switch stabilized voltage power supply. Background technique [0002] With the continuous advancement of science and technology, electronic products have brought great convenience to people's life while their functions are becoming more and more powerful. The voltage stabilizing circuit is easy to operate. The traditional series linear regulating voltage stabilizing circuit has the characteristics of high stability, adjustable output voltage, small ripple coefficient, and simple circuit. However, the adjustment tubes of these series linear adjustment type voltage stabilizing circuits always work in the amplified state, and current flows all the time, so the power consumption of the tubes is relatively large, and the efficiency of the circuit is not high, generally only reaching 30% to 50% %about. In order to overcome th...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of large ripple coefficient, serious radio frequency interference, complex circuit and low efficiency existing in the current switch-type regulated power supply, and provide a beam-excited nonlinear negative feedback switch regulated power supply

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