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High-resistance filtering-type light-operated LED control system based on linear driving circuit

A linear drive and control system technology, applied in the electronic field, can solve problems such as unstable output current and inaccurate brightness signal processing, and achieve the effects of prolonging service life, ensuring accuracy, and improving stability

Inactive Publication Date: 2016-08-31
CHENGDU ANGDIJIA 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 inaccurate brightness signal processing and unstable output current in the light-controlled LED control system in the prior art, and provide a high-impedance filter-type light-controlled LED control system based on a linear drive circuit. system

Method used

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  • High-resistance filtering-type light-operated LED control system based on linear driving circuit
  • High-resistance filtering-type light-operated LED control system based on linear driving circuit
  • High-resistance filtering-type light-operated LED control system based on linear driving circuit

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Embodiment

[0022] Such as figure 1 As shown, the present invention is mainly composed of a control chip U1, a brightness sensor, a triode VT1, a resistor R3, a resistor R4, a polar capacitor C4, a Zener diode D2, a high-impedance filter circuit, a buffer trigger circuit, a signal receiving circuit, and a current adjustment circuit. , and a linear drive circuit.

[0023] During implementation, the N pole of the Zener diode D2 is connected to the VDD pin of the control chip U1, and its P pole is connected to the base of the triode VT1 after passing through the resistor R3. The positive pole of the polarity capacitor C4 is connected to the CTH pin of the control chip U1 through the resistor R4, and the negative pole thereof is grounded. The signal receiving circuit is connected with the brightness sensor. The high resistance filter circuit is connected in series between the signal receiving circuit and the ANT pin of the control chip U1. The current adjustment circuit is respectively con...

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Abstract

The invention discloses a high-resistance filtering-type light-operated LED control system based on a linear driving circuit. The system is mainly formed by a control chip U1, a brightness sensor, a triode VT1, a voltage stabilizing diode D2, a polar capacitor C4, a signal receiving circuit, a current adjusting circuit, a high resistance filtering circuit connected in series between the signal receiving circuit and an ANT base pin of the control chip U1, a linear driving circuit connected to the current adjusting circuit and a buffer type trigger circuit connected in series between the current adjusting circuit and the linear driving circuit. By using the system, an interference signal in signals output by the brightness sensor can be eliminated so that the signals output by the brightness sensor are accurate and signal processing accuracy of the system is increased. Simultaneously, the system can effectively adjust voltage intensity so that the system can be ensured to output a stable current.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a high-impedance filter-type light-controlled LED control system based on a linear 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-activated and light-activated LED control systems to turn on and off 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 control system has the problem of inaccurate processing of brightness signals, which makes it unable to accurately control the opening and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/37H05B45/10Y02B20/30
Inventor 周建英
Owner CHENGDU ANGDIJIA TECH CO LTD
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