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Light-operated LED switch power source based on voltage double protection processing

A switching power supply and dual protection technology, applied in the field of light-controlled LED switching power supply, can solve the problems of unstable output voltage and current, and achieve the effect of preventing high voltage and high current damage, eliminating shock and improving stability.

Inactive Publication Date: 2018-02-27
CHENGDU LEIKEER SCI & TECH
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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 defects of output voltage and current instability in the light-controlled LED power supply in the prior art, and provide a light-controlled LED switching power supply based on voltage double protection processing

Method used

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  • Light-operated LED switch power source based on voltage double protection processing
  • Light-operated LED switch power source based on voltage double protection processing
  • Light-operated LED switch power source based on voltage double protection processing

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Embodiment

[0021] Such as figure 1 As shown, the present invention is mainly composed of a control chip U2, a transformer T, a short-circuit voltage regulator protection circuit, a diode rectifier U1, a polar capacitor C1, a polar capacitor C2, a Zener diode D1, an overvoltage and overcurrent protection circuit, and a pulse adjustment circuit. And voltage conditioning output circuit.

[0022] When connected, the anode of the polarity capacitor C1 is connected to the anode output terminal of the diode rectifier U1, and its cathode is connected to the collector of the triode VT5. The positive pole of the polarized capacitor C2 is connected to the positive pole of the polarized capacitor C1, and the negative pole is connected to the negative pole of the polarized capacitor C1 after passing through the resistor R1. The N pole of the Zener diode D1 is connected to the VIN pin of the control chip U2, and its P pole is connected to the positive output end of the diode rectifier U1. The pulse ...

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Abstract

The invention discloses a light-operated LED switch power source based on voltage double protection processing. The light-operated LED switch power source is characterized by being mainly composed ofa control chip U2, a short-circuit voltage stabilizing protection circuit, a transformer T, a diode rectifier U1, a polar capacitor C1, a polar capacitor C2, a voltage stabilizing diode D1, a pulse adjusting circuit, a voltage conditioning output circuit and an over-voltage and over-current protection circuit, wherein the pulse adjusting circuit is connected to the control chip U2, the voltage conditioning output circuit is connected to the control chip U2, and the over-voltage and over-current protection circuit is connected between the negative output end of the diode rectifier U1 and the voltage conditioning output circuit in series. Through the light-operated LED switch power source based on voltage double protection processing, the input voltage and the pulse dynamic condition of thecurrent can be adjusted, the output voltage and the intensity of the current can be adjusted at the same time, accordingly the stability of the output voltage and current is ensured, the stability ofthe brightness of a light-operated LED lamp is effectively ensured, and the service life of the LED lamp is prolonged.

Description

technical field [0001] The invention relates to a switching power supply, specifically, a light-controlled LED switching power supply based on voltage double protection processing. Background technique [0002] At present, due to the characteristics of low energy consumption, long service life, safety and environmental protection, LED lamps have become one of the mainstream products for people's living lighting. In life, people often use voice control or light control control system to realize the opening and closing of LED lights. The light-controlled LED control system is favored by people because it can control the opening and closing of LED lights according to the brightness of the LED light environment, and can effectively meet people's requirements for LED lights in terms of energy saving. However, the existing light-controlled LED power supply has the problem of unstable output voltage and current, which leads to unstable brightness of the light-controlled LED lamp a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H02M3/158H02H7/125H05B44/00
CPCH02H7/1252H02H7/1257H02M3/158H05B45/10Y02B20/30
Inventor 黄涛
Owner CHENGDU LEIKEER SCI & TECH
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