Alternating-current non-contact voltage regulator

Abstract

The invention relates to an alternating-current non-contact voltage regulator. The voltage regulator consists of a 220 V alternating-current power supply, a full-bridge rectifying circuit, an auto-voltage regulator and half-wave rectifying circuit, mono-direction-controlled silicon, and a relaxation oscillation circuit. The model of a unijunction transistor used in the relaxation oscillation circuit is BT33. By referring to the working principle of a servo motor alternating-current voltage stabilizer, the alternating-current non-contact voltage regulator has the advantages that: the circuits have simple structures, non-contact voltage regulation is realized, the response to voltage regulation is quick, voltage regulation is accurate, waveform distortion is avoided, the application range of mains alternating-current voltage is 160 to 260V, and a large number of copper materials are saved. The voltage regulator does not have any voltage switching contact, so electromagnetic interference caused by contact strike cannot occur, a power grid cannot be polluted, and the alternating-current non-contact voltage regulator is particularly applied to regions of which the fluctuation range of power grid voltage is wider, and can substitute various traditional high-power voltage regulating power supplies in the market.

Description

technical field [0001] The invention belongs to the application field of electronic technology and relates to an AC non-contact voltage stabilizer. Background technique [0002] At present, the main types of AC regulated power supplies on the market are relay switching type, magnetic saturation type, and servo motor type. Their advantages and disadvantages are: the relay switching type has simple circuit structure and low cost, but The voltage classification is rough, the contacts are prone to sparks and electromagnetic interference when the voltage gear is switched, the switching response speed is slow, and there is an instantaneous power failure phenomenon. It is not suitable for use on equipment with high power requirements; the magnetic saturation type has the characteristics of simple circuit structure and non-contact voltage stabilization, but it is not suitable for making AC voltage stabilizers with power greater than 150W; servo motor type AC voltage stabilizer The ...

AI Technical Summary

Problems solved by technology

[0002] At present, the main types of AC regulated power supplies on the market are relay switching type, magnetic saturation type, and servo motor type. Their advantages and disadvantages are: the relay switching type has simple circuit structure and low cost, but The voltage classification is rough, the contacts are prone to sparks and electromagnetic interference when the voltage gear is switched, the switching response speed is slow, and there is an instantaneous power failure phenomenon

It is not suitable for use on equipment with high power requirements; the magnetic saturation type has the characteristics of simple circuit structure and non-contact voltage stabilization, but it is not suitable for making AC voltage stabilizers with power greater than 150W; servo motor type AC voltage stabilizer The voltage sends a signal through the sampling control circuit to drive the servo motor, and automatically adjusts the position of the carbon brush of the auto-coupling regulator to adjust the output voltage to the rated value and reach a stable state. There is no distortion, no instantaneous power failure and no contact during the voltage switching process. The phenomenon of electromagnetic interference caused by ignition has high precision of voltage regulation and no noise during operation, but the circuit structure is complex, the response speed is slow, the voltage regulation range is narrow, the carbon brush of the autotransformer is easy to wear, and the consumption of copper materials is more

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