Surge voltage resistant pulse-type driving power supply for LED lamp

Abstract

The invention discloses a surge voltage resistant pulse-type driving power supply for an LED lamp. The driving power supply is provided with a rectifier bridge and a limiter circuit, wherein the limiter circuit is composed of a negative temperature coefficient (NTC) thermistor and a third monopole type transient voltage suppressor (TVS3); and the rectifier bridge is composed of a first bridge arm, a second bridge arm, a third bridge arm and a fourth bridge arm. Each of the first bridge arm and the second bridge arm is formed by a fourth rectifier diode (D4) and a third rectifier diode (D3); the third bridge arm is composed of a second rectifier diode (D2) and a second monopole type transient voltage suppressor (TVS2); and the fourth bridge arm is composed of a first rectifier diode (D1) and a first monopole type transient voltage suppressor (TVS1) whose negative poles are connected.

Description

technical field [0001] The invention relates to the field of LED lamps, in particular to a "pulse drive power supply for LED lamps with anti-surge voltage" with the function of anti-surge voltage. Background technique [0002] Because of the advantages of energy saving, environmental protection, long life, fast response, rich colors, and controllability, LED lamps are recognized as the best way to realize energy saving and consumption reduction of lamps by promoting LED lamps. Japan estimates: If half of Japan's incandescent and fluorescent lamps are replaced with LED lamps, it will save Japan 6 billion liters of crude oil equivalently every year! Some people even think that: LED light is one of the most important inventions of human beings after Edison invented the incandescent light bulb. Lamp housing (or lampshade), Light Emitting Diode (Light Emitting Diode) components (referred to as LED components in this article), driving power of LED components (referred to as drivi...

AI Technical Summary

Problems solved by technology

[0007] 1. Non-polar capacitors and polarized electrolytic capacitors are used in electronic circuits, and electrolytic capacitors are devices whose life is much lower than that of LED components, so LED lights are threatened by shortening their service life;

[0008] 2. Due to the presence of capacitance in the driving power supply, the LED light becomes a "capacitive load" of the AC power supply, resulting in a decrease in power factors (Power factors);

[0010] (1) The afterglow of "phosphor powder" in light-emitting diodes cannot be used;

[0011] (2) Increase the temperature rise of the LED lamp and shorten the service life;

[0012] 4. There is no function of anti-lightning strike and anti-surge voltage

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