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Special power supply with wide adaptive range

A technology that adapts to the surface and power supply, and is applied in the electronic field to achieve the effect of strong reliability, high reliability, and reliable output voltage

Inactive Publication Date: 2017-07-04
CHONGQING NINGLAI SCI & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The third difficulty is that when there is mains power, it is a system for the load, and when there is no mains power, it is powered by the battery system. The conversion between the two is automatic switching, so how to realize the scientific conversion

Method used

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  • Special power supply with wide adaptive range
  • Special power supply with wide adaptive range
  • Special power supply with wide adaptive range

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] figure 1 figure 2 image 3 A production instance is expressed.

[0058] 1. Selection of components: The surge arrester should have a breakdown voltage of less than 100 volts, and the voltage regulator transistor should use a high-backvoltage and high-power transistor 3DD15, and the amplification factors of the two transistors should preferably be 80--100. The Zener diode is selected with a power of 1W, and the power of the overcurrent protection resistor is 1W. The values ​​of the two overcurrent protection resistors should be the same.

[0059] 2. Welding: according to figure 2 Schematic for soldering.

[0060] 3. Inspection and debugging of power-on: first connect the power supply to the load.

[0061] (1) Detect the symmetry of the follower tube at the total channel level: test the protective resistance of the emitters of the two follower tubes in series ( figure 2 In 108.1, 109.1) voltage, the voltage of the two protective resistors should be basically the s...

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Abstract

The invention discloses a special power supply with a wide adaptive range, and belongs to the technical field of electronics. The special power supply consists of a rectifying stage, a first lightning protection stage namely a lightning arrester, a first voltage-stabilizing stage, a general channel stage, a mains supply output stage and a storage battery stage; the output of the rectifying stage is connected with the first lightning protection stage and the general channel stage separately, and the first voltage-stabilizing stage is adopted for voltage stabilizing; the mains supply output stage and the storage battery stage are behind the general channel stage; and the energy supplied by the general channel stage for two parts need sufficient margin. Therefore, three measures are adopted as follows: firstly, the general channel stage adopts multiple high-counter-voltage high-power triodes, and adopts an emission following parallel output mode, so that the output power of the triodes is expanded and strong loading capability is achieved, and the reliability service life of the power supply of the general channel is prolonged; secondly, emitting electrodes of two emission following tubes are connected with balance resistors in series, so that the two tubes can be balanced in load without being damaged due to imbalance; and thirdly, a voltage-stabilizing triode performs overcurrent protection to form protection on the emission following tubes, so that high reliability is achieved. Consequently, the power supply has wide and special applications.

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] First, the power supply is often an electrical appliance, the key part that is most prone to failure, and this is true for ordinary household appliances. This is especially...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/32H02J7/04
CPCH02J7/04H02M1/32H02M1/325
Inventor 不公告发明人
Owner CHONGQING NINGLAI SCI & TRADE
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