Adjustable power supply for computers

Abstract

The invention discloses an adjustable power supply for computers. The adjustable power supply comprises a transformer, a bridge rectifier circuit, a UA723 voltage stabilizing circuit, first to fourth resistors, first to fourth capacitors, a triode, a potentiometer and an LED. Two ends of a primary winding of a transformer are connected with positive and negative voltage input ends. Two ends of a secondary winding of the transformer are connected with two AC input ends of the bridge rectifier circuit. The anode output end of the bridge rectifier circuit is connected with the first end of the first capacitor, the first end of the first resistor, a collector of the triode, the eleventh pin end of the UA723 voltage stabilizing circuit and the twelfth pin end of the UA723 voltage stabilizing circuit. By the use of the adjustable power supply, the problem that the existing adjustable power supplies for computers are complex in circuit structure is solved, and computer production cost is lowered.

Description

technical field [0001] The invention relates to a switching power supply for a computer, in particular to an adjustable power supply for a computer. Background technique [0002] Computer is one of the most advanced scientific and technological inventions in the 21st century. It has had an extremely important impact on human production and social activities, and has developed rapidly with strong vitality. Its application field has expanded from the initial military scientific research application to various fields of society, and has formed a huge computer industry, which has driven technological progress on a global scale, which has triggered profound social changes. Computers have spread throughout general schools and enterprises. Public institutions have entered the homes of ordinary people and become an indispensable tool in the information society. It is one of the important signs that mankind has entered the information age. With the development of the Internet of Th...

AI Technical Summary

Problems solved by technology

[0004] In the computer, the power supply is an important part. Many adjustable power supplies currently used in computers have the problem of relatively complicated circuit structure, which increases the production cost of the computer.

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