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Linear constant-current driving circuit-based light-controlled LED switching power supply

A linear constant current drive, switching power supply technology, applied in the field of electronics, can solve the problems of unstable output voltage and current, and achieve the effect of ensuring stability, improving service life, and improving stability and reliability.

Inactive Publication Date: 2016-10-12
CHENGDU FEIKAIRUI 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 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 a linear constant current drive circuit

Method used

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  • Linear constant-current driving circuit-based light-controlled LED switching power supply
  • Linear constant-current driving circuit-based light-controlled LED switching power supply

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Embodiment

[0018] Such as figure 1 As shown, the present invention is mainly composed of a control chip U2, a transformer T, a diode rectifier U1, a polar capacitor C1, a polar capacitor C2, a Zener diode D1, a linear constant current drive circuit, a pulse adjustment circuit, and a voltage conditioning output circuit.

[0019] 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 negative output terminal of the diode rectifier U1. 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 adjustment circuit is connected with the con...

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Abstract

The invention discloses a linear constant-current driving circuit-based light-controlled LED switching power supply, which is characterized by mainly comprising a control chip U2, a transformer T, a diode rectifier U1, a polar capacitor C1, a polar capacitor C2, a voltage-stabilizing diode D1, a pulse adjustment circuit, a voltage conditioning output circuit, and a linear constant-current driving circuit. The pulse adjustment circuit is connected with the control chip U2. The voltage conditioning output circuit is respectively connected with the control chip U2 and the diode rectifier U1. The linear constant-current driving circuit is connected with the voltage conditioning output circuit. According to the technical scheme of the invention, input voltage and current pulses are adjusted dynamically. Meanwhile, the strength of the output voltage and the strength of the output current are adjusted, so that the stability of the output voltage and the stability of the output current are ensured. Therefore, the brightness stability of a light-controlled LED lamp is effectively ensured. Meanwhile, the service life of the LED lamp is prolonged.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a light-controlled LED switching power supply based on a linear constant current drive circuit. 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 ...

Claims

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Application Information

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IPC IPC(8): H05B33/08H02M3/156H05B44/00H05B45/345
CPCH02M3/156H05B45/00Y02B20/30
Inventor 不公告发明人
Owner CHENGDU FEIKAIRUI TECH CO LTD
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