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Triode direct-current voltage-stabilizing circuit-based filtering and voltage-stabilizing power supply used for LED light strip

A technology of DC voltage stabilizer circuit and LED strip, applied in electric light source, electroluminescence light source, light source and other directions, can solve the problems of low load capacity, unstable output voltage and current, etc., to improve load capacity, stable oscillation, The effect of ensuring stability

Inactive Publication Date: 2018-02-23
CHENGDU SAIPUQI 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 unstable output voltage and current and low load capacity of the constant current power supply in the prior art, and provide a filtering and stabilizing power supply for LED light strips based on a three-manifold DC voltage stabilizing circuit

Method used

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  • Triode direct-current voltage-stabilizing circuit-based filtering and voltage-stabilizing power supply used for LED light strip
  • Triode direct-current voltage-stabilizing circuit-based filtering and voltage-stabilizing power supply used for LED light strip
  • Triode direct-current voltage-stabilizing circuit-based filtering and voltage-stabilizing power supply used for LED light strip

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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 three-manifold DC voltage regulator circuit, a diode rectifier U1, a resistor R1, an adjustable resistor R5, a resistor R16, a polar capacitor C1, a polar capacitor C3, and a polar capacitor C4, a polar capacitor C5, a second-order active low-pass filter circuit, a voltage regulator diode D1, a source voltage regulator circuit, and an overvoltage and overcurrent adjustment circuit.

[0022] When connected, the three-manifold DC voltage stabilizing circuit is connected in series between the end with the same name and the end with the same name of the inductance coil on the secondary side of the transformer T. The second-order active low-pass filter circuit is connected in series between the IS pin of the control chip U2 and the source voltage stabilizing circuit. The source voltage stabilizing circuit is connected in series between the inductance coil L1 on the p...

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Abstract

The invention discloses a triode direct-current voltage-stabilizing circuit-based filtering and voltage-stabilizing power supply used for an LED light strip. The filtering and voltage-stabilizing power supply is characterized by mainly comprising a control chip U2, a transformer T, a triode direct-current voltage-stabilizing circuit, a diode rectifier U1, a source electrode voltage-stabilizing circuit, a polar capacitor C4, a two-order active low-pass filtering circuit, a polar capacitor C3, an overvoltage and overcurrent adjustment circuit and the like, wherein the positive electrode of the polar capacitor C3 is connected with the non-dotted terminal of a secondary side inductive coil L3 of the transformer T while the negative electrode of the polar capacitor C3 is connected with the dotted terminal of the secondary side inductive coil L3 of the transformer T; and the overvoltage and overcurrent adjustment circuit is connected with the control chip U2. By adoption of the filtering andvoltage-stabilizing power supply, the high voltage pulse in the voltage and the high current ripple in the current can be effectively adjusted to enable the voltage and the current to be maintained in dynamic smooth and steady states, thereby ensuring that the filtering and voltage-stabilizing power supply can output stable voltage and current.

Description

technical field [0001] The invention relates to a power supply for a light strip, specifically, a filtering and stabilizing power supply for an LED light strip based on a three-manifold DC voltage stabilizing circuit. Background technique [0002] At present, with the continuous improvement of people's living standards, the requirements for the beautification of the living environment are getting higher and higher. In order to beautify their living environment, people use LED strips with various light sources to beautify the interior. The LED light strips are placed in the dark groove on the top of the room to form a beautiful halo, which can not only beautify the living environment, but also bring a wonderful light to people at night. However, the output voltage and current of the power supply of the existing LED light strips are unstable, which causes the LED light strips to flicker during use, thereby affecting the service life of the LED light strips. At the same time, ...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00H05B45/37
Inventor 余泓德
Owner CHENGDU SAIPUQI TECH CO LTD
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