Double-ground-wire precise matching power supply

A dual-ground, precise technology, applied in the electronic field, can solve the problems of power consumption, unsuitable product popularization, and high cost of the solution, and achieve the effects of strong reliability, strong anti-backpressure ability, and high reliability

Inactive Publication Date: 2017-07-11
CHONGQING NINGLAI SCI & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficulty 5. Some materials propose to use relays for switching. This scheme has many shortcomings. One of the m...

Method used

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  • Double-ground-wire precise matching power supply
  • Double-ground-wire precise matching power supply
  • Double-ground-wire precise matching power supply

Examples

Experimental program
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Embodiment Construction

[0062] figure 1figure 2 image 3 A production instance is expressed.

[0063] 1. Selected components: The overvoltage protection relay adopts electronic small relays, but adopts the type with two changeover contacts. Overvoltage protection One-unit Zener tube is selected, and the type of Zener tube required for design, the voltage value should be higher than the rectified output voltage. Overvoltage protection unit 1 or gate tube 2; a rectifier diode with a reverse voltage higher than 1000 volts should be selected. The voltage regulator triode is 3DD15 with high back pressure and high power, and the amplification factor of the two tubes is preferably 80--100. Overvoltage protection two-unit dormant voltage regulator; overvoltage protection two-unit working voltage regulator; Zener diode with a power of 1W, 12.1, overcurrent protection resistor with a power of 1W. The values ​​of the two overcurrent protection resistors should be the same.

[0064] 2. Welding: according t...

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PUM

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Abstract

The invention relates to a double-ground-wire precise matching power supply and belongs to the technical field of electronics. The double-ground-wire precise matching power supply comprises a rectification unit 1, a floating charge constant-voltage unit, a storage battery, a rectification unit 2, an overvoltage protection unit 1, a switching control unit, an AC power supply unit 1, an AC power supply unit 2, a load equivalent unit, an automatic switching unit, and an overvoltage protection unit 2. The positive pole of the storage battery and the output ends of the AC power supply units are connected with the power end of the load equivalent unit. The grounding end of the load equivalent unit is connected with the automatic switching unit. The automatic switching unit is controlled by the switching control unit. When AC power is provided, the switching control unit is activated and the automatic switching unit is disconnected so that the storage battery is not discharged. When no AC power is provided, the switching control unit is disconnected and the storage battery is discharged to supply power to a load. The double-ground-wire precise matching power supply is fast in switching speed so as not to have an influence on the load for ensuring the performance of the load. The double-ground-wire precise matching power supply forms multistage overvoltage protection, has wider adaptability than a traditional power supply, can be widely adapted to the needs of the load.

Description

technical field [0001] The invention belongs to the field of electronic technology. Background technique [0002] The voltage regulator is an important part of electronic products, and its excellent performance is directly related to the overall performance, so there are many excellent voltage regulator integrated circuits, such as 78 series, 79 series and so on. Although the above-mentioned integrated series have many advantages, they still cannot meet the ever-changing needs. [0003] For example, the company has applied for several products related to security equipment. The products of these devices have very high requirements on the power supply, which is far higher than that of ordinary household appliances, and the traditional design scheme is not competent. The reasons are as follows: [0004] One is that the power supply is often an electrical appliance, the key part that is most likely to fail, and it is the same for ordinary household appliances. This is espec...

Claims

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Application Information

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IPC IPC(8): H02J9/06H02H3/20H02H9/04H02J7/02
CPCH02J9/061H02H3/20H02H9/04H02J7/02
Inventor 不公告发明人
Owner CHONGQING NINGLAI SCI & TRADE
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