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Compound protection type logic amplification type double-buffering driving power supply used for power failure detection

A power failure, logic amplification technology, applied in emergency protection circuit devices, automatic disconnection emergency protection devices, electrical components and other directions, can solve problems such as large ripple coefficient, radio frequency interference, complex circuits, etc. Quality, the effect of simplifying the circuit structure

Inactive Publication Date: 2015-09-23
CHENGDU LEIKEER SCI & TECH
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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 overcome the defects of large ripple coefficient, serious radio frequency interference, complex circuit and low efficiency existing in the current power supply for fault detection equipment, and provide a composite protection logic amplification double buffer drive power supply for power fault detection

Method used

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  • Compound protection type logic amplification type double-buffering driving power supply used for power failure detection
  • Compound protection type logic amplification type double-buffering driving power supply used for power failure detection
  • Compound protection type logic amplification type double-buffering driving power supply used for power failure detection

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Embodiment

[0023] like figure 1As shown, the present invention mainly consists of a diode rectifier U, a nonlinear trigger circuit connected with the diode rectifier U, a double-buffered quartz crystal oscillator circuit connected with the nonlinear trigger circuit, and a series connection between the diode rectifier U and the nonlinear trigger circuit It consists of a power logic voltage stabilizing circuit between the power logic voltage stabilizing circuit and a logic protection amplifier circuit 20 connected in series between the power logic voltage stabilizing circuit and the non-linear trigger circuit, and a composite protection circuit 10 set on the diode rectifier U.

[0024] Wherein, the power logic regulator circuit is composed of power amplifier P1, NAND gate IC1, NAND gate IC2, NAND gate IC3, NAND gate IC4, diode D1, resistor R3, resistor R4, resistor R5, resistor R6 resistor R7, resistor R8 and capacitor C3 are composed.

[0025] When connected, the N pole of the diode D1 i...

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Abstract

The invention discloses a logic protection amplification type double-buffering driving power source for a power system fault detection device. The logic protection amplification type double-buffering driving power source is mainly composed of a diode rectifier U, a nonlinear trigger circuit, a double-buffering quartz crystal oscillator circuit and a power logic voltage stabilizing circuit, wherein the nonlinear trigger circuit is connected with the diode rectifier U, the double-buffering quartz crystal oscillator circuit is connected with the nonlinear trigger circuit, and the power logic voltage stabilizing circuit is connected between the diode rectifier U and the nonlinear trigger circuit in series. The logic protection amplification type double-buffering driving power source is characterized in that a logic protection amplification circuit is connected between the power logic voltage stabilizing circuit and the nonlinear trigger circuit in series. According to the logic protection amplification type double-buffering driving power source, the power logic voltage stabilizing circuit and the nonlinear trigger circuit are combined innovatively, the circuit structure can be greatly simplified, radio-frequency interference of the circuits and external radio-frequency interference can be lowered, and 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 compound protection logic amplification double buffer drive power supply for electric fault detection. Background technique [0002] At present, with the rapid development of the power industry, the equipment that people use for power system fault detection has also developed greatly. Since the maintenance of the power system often involves voltage lines of hundreds of kilovolts or even millions of kilovolts, the maintenance lines are very long, so the power supply requirements for fault detection equipment are also very high. However, at present, the mobile power supply provided by the fault detection equipment has a large ripple coefficient, which not only produces radio frequency electromagnetic interference, but also has a complicated circuit structure, high maintenance and production costs, which largely limits The scope of use of fault detection equipment is no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/217H02M3/157H02H5/04H02H7/125
CPCH02M1/34H02M7/217
Inventor 黄涛
Owner CHENGDU LEIKEER SCI & TECH
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