Voltage-stabilizing circuit by adopting LCpi-type filter and using bridge rectifier circuit for rectifier

A technology of bridge rectifier circuit and voltage stabilizing circuit, which is applied in the direction of converting DC power input to DC power output, converting AC power input to DC power output, electrical components, etc., and can solve the problem of reducing ripple coefficient and excessive ripple voltage Circuit and other problems, to achieve the effect of ensuring output voltage, voltage stability, and reasonable use

Inactive Publication Date: 2016-10-12
成都市思卡利科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a voltage stabilizing circuit rectified by a bridge rectifier circuit using LCπ-type filtering to solve the problem of excessive ripple voltage and excessive influence when using a bridge rectifier in the prior art and using single-capacitor filtering after rectification output. The shortcomings of the follow

Method used

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  • Voltage-stabilizing circuit by adopting LCpi-type filter and using bridge rectifier circuit for rectifier

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Embodiment 1

[0024] The voltage stabilizing circuit rectified by a bridge rectifier circuit using LCπ filter solves the shortcomings of the existing technology that adopts bridge rectification and single capacitor filter after rectification output, the ripple voltage is too large and too much affects the follow-up circuit. , the use of LCπ-type filter for the first section filter processing after the rectified output can effectively reduce the ripple coefficient, provide high reliability voltage for subsequent processing, and use the voltage stabilization system designed based on controllable precision reference voltage regulation technology For voltage stabilization, such as figure 1 As shown, the following structure is specially set up: a bridge rectifier circuit, a filter circuit and a voltage stabilizing system with a controllable precision voltage stabilization function are provided, and a diode D2, a diode D3, a diode D4 and a diode D5 are arranged in the bridge rectifier circuit , t...

Embodiment 2

[0027] This embodiment is further optimized on the basis of the above-mentioned embodiments, further to better realize the present invention, such as figure 1As shown, the following configuration structure is adopted in particular: the controllable precision voltage stabilization system, a comparison circuit, a sampling circuit and an output filter circuit are arranged in the voltage stabilization system, and the controllable precision voltage stabilization source system is connected in parallel with the capacitor C3, The controllable precision voltage stabilizing source system is connected to a comparison circuit, the comparison circuit is connected to a sampling circuit, the sampling circuit is connected to an output filter circuit, and the output filter circuit is connected to a power supply circuit.

[0028] When designing and using, the controllable precision voltage stabilizing source system is connected in parallel with the capacitor C3, and the present invention uses a ...

Embodiment 3

[0030] This embodiment is further optimized on the basis of any of the above embodiments, such as figure 1 As shown, further in order to better realize the present invention, the voltage sampled by the sampling circuit can be compared with the reference voltage provided by the controllable precision regulated source system, thereby further adjusting the regulated power supply output by the output filter circuit, To obtain the required DC stabilized voltage output, the following configuration structure is particularly adopted: the comparison circuit is provided with a triode Q1, a triode Q2, an integrated operational amplifier U1 and a capacitor C1, the collector of the triode Q1 and the first capacitor of the capacitor C3 The base of the transistor Q1 is connected to the output terminal of the integrated operational amplifier U1, the emitter of the transistor Q1 is connected to the base of the transistor Q2, the collector of the transistor Q2 is connected to the first end of th...

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Abstract

The invention discloses a voltage-stabilizing circuit by adopting LCpi-type filter and using a bridge rectifier circuit for rectifier, which comprises the bridge rectifier circuit, a filter circuit and a voltage-stabilizing system with a controllable precise voltage-stabilizing function, wherein the bridge rectifier circuit is internally provided with a diode D2, a diode D3, a diode D4 and a diode D5; the filter circuit comprises a capacitor C3, a capacitor C4 and an inductor L, the first end of the capacitor C4 is connected with the negative electrode of the diode D3 and the first end of the inductor L, the second end of the capacitor C4 is connected with the positive electrode of the diode D2 and the second end of the capacitor C3, the second end of the inductor L is connected with the first end of the capacitor C3, and the capacitor C3 is in parallel connection with the input end of the voltage-stabilizing system. Deficiencies that when bridge rectifier is adopted in the prior art, a single capacitor is adopted for filter after rectifier output, ripple voltage is excessively large and too much, and the subsequent circuit is influenced are solved; and the LCpi-type filter is used for head filter processing after rectifier output, and the ripple factor can be effectively reduced.

Description

technical field [0001] The invention relates to the field of voltage stabilizing technology, in particular, it is a voltage stabilizing circuit rectified by a bridge rectifier circuit using LCπ type filter. Background technique [0002] A power supply is a device that provides power to electronic equipment, also known as a power supply, and a device that converts other forms of energy into electrical energy is called a power supply. Generators can convert mechanical energy into electrical energy, and dry batteries can convert chemical energy into electrical energy. Generators, dry batteries, etc. are called power sources. A device that converts alternating current into direct current through a transformer and a rectifier is called a rectified power supply. An electronic device that can provide a signal is called a signal source. The crystal triode can amplify the signal sent from the front, and then transmit the amplified signal to the circuit behind. The transistor can ...

Claims

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Application Information

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IPC IPC(8): H02M7/217H02M3/156H02M1/14
CPCH02M7/217H02M1/14H02M3/156
Inventor 姜迪蛟
Owner 成都市思卡利科技有限公司
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