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Adjustable voltage-stabilized driving power source for LED

A technology for driving power supply and stabilization, applied in the field of electronics, can solve the problem of small output voltage adjustable range, and achieve the effects of improving voltage regulation accuracy, reducing power consumption and improving efficiency

Inactive Publication Date: 2016-11-23
CHENGDU CHUANTONGDA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defect that the output voltage adjustable range of the LED adjustable power supply in the prior art is small, and to provide an adjustable and stable voltage driving power supply for LED

Method used

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Embodiment

[0016] like figure 1 As shown, the present invention is mainly composed of a transformer T, a diode rectifier U1, a diode rectifier U2, a one-way thyristor VS, the N pole is connected to the positive output terminal of the diode rectifier U1 after passing through the resistor R1, and the P pole is connected to the diode rectifier U1 after passing through the resistor R2. Zener diode D1 connected to the negative output terminal of the zener diode D1, the positive pole is connected to the positive output terminal of the diode rectifier U2, the polar capacitor C5 is connected to the negative output terminal of the diode rectifier U2, and the polar capacitor C5 is connected to the N pole of the Zener diode D1 respectively. It consists of a base trigger circuit connected to the negative output terminal of the diode rectifier U1, and a three-terminal voltage regulator circuit connected to the cathode of the unidirectional thyristor VS and the negative output terminal of the diode rec...

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Abstract

The invention discloses an adjustable voltage-stabilized driving power source for an LED. The adjustable voltage-stabilized driving power source for the LED is characterized by mainly comprising a transformer T, a diode rectifier U1, a diode rectifier U2, a unidirectional thyristor VS, a voltage stabilizing diode D1, a polar capacitor C5, a base trigger circuit connected with the N pole of the voltage stabilizing diode D1 and the negative pole output end of the diode rectifier U1, and a three-terminal voltage stabilizing circuit which is connected with the cathode of the unidirectional thyristor VS and the negative pole output end of the diode rectifier U2. According to the adjustable voltage-stabilized driving power source for the LED of the invention, an LM317 integrated chip is adopted as a voltage stabilizing chip U3; and the LM317 integrated chip and peripheral circuits are combined together so as to realize suspension power supply; and pre-voltage adjustment can be realized through the thyristor, so that adjustable voltage from 6 to 12V can be outputted, and therefore, the power source of the invention can output adjustable voltage in a wider range.

Description

technical field [0001] The invention relates to the field of electronics, in particular to an LED adjustable voltage-stabilized driving power supply. Background technique [0002] Under the background of global energy shortage and increasing environmental protection requirements, all countries in the world are vigorously developing green energy-saving lighting. As a revolutionary energy-saving lighting technology, LED lighting is developing rapidly, and the brightness of dimmable LEDs is widely used because it can be adjusted according to the ambient brightness. However, the existing LED adjustable power supply has the problem that the adjustable range of the output voltage is small, so that the brightness of the dimming LED lamp does not change much, so that it cannot meet people's requirements. [0003] Therefore, it is imperative to provide an LED adjustable power supply whose output voltage can be adjusted in a wide range. SUMMARY OF THE INVENTION [0004] The purpos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/37
Inventor 不公告发明人
Owner CHENGDU CHUANTONGDA TECH CO LTD
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