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Variable voltage driving circuit

A driving circuit and voltage technology, which is applied in the field of variable voltage driving circuits, can solve the problems of changing accordingly, limiting the decorative effect of LED light strings, affecting the brightness state of LED decorative light strings, etc., and achieving the effect of ensuring safe use

Inactive Publication Date: 2017-07-11
NINGBO DIMINGSI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The practice of full parallel or full series limits the decorative effect of LED light strings
When the LED light string made by the mixed connection method can effectively ensure the consistency of the LED brightness and achieve various decorative effects, if one of the LEDs is broken, the voltage or current of the other LEDs will change accordingly. May affect the brightness status of the entire LED decorative light string

Method used

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Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] Such as Figure 1-2 As shown, the present invention provides a driving circuit of variable voltage, and the driving circuit (4) includes a single-chip microcomputer (5), a boost circuit (7), a detection circuit (2) and a string of lights (3), and the single-chip microcomputer (5) the output signal, the detection circuit (2) the feedback signal, and the single-chip microcomputer (5) calculate and adjust the signal so that the boost circuit (7) outputs th...

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Abstract

The invention discloses a variable voltage driving circuit comprising a single-chip microcomputer, a voltage step-up circuit, a detection circuit, a protection circuit and a lamp string. When rated power of the driving circuit is not exceeded, the driving circuit can be used for driving LED lamp strings of all kinds of power and all kinds of connection modes, and working voltage needed for driving the lamp string of the driving circuit can be provided via control of the single-chip microcomputer, a voltage transformation circuit and the detection circuit according to LED lamp string load change.

Description

technical field [0001] The invention relates to the field of lamps, in particular to a variable voltage drive circuit. Background technique [0002] With the progress of the times and the development of science and technology, the application of LED light strings has been widely used in home decoration, festive atmosphere, city lighting and entertainment places. Compared with traditional decorative lights, LED light strings have lower energy consumption, gorgeous colors, and can realize color changes, and can be arbitrarily cut according to actual decoration needs to meet people's auxiliary lighting and decoration needs. Generally speaking, the driving methods of LED light strings currently on the market are divided into two types: constant voltage drive and constant current drive; when the constant voltage is driven, the output voltage remains constant, and when the load of the LED light string changes, the loop current changes accordingly. The output voltage of the consta...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00H05B45/37Y02B20/30
Inventor 贾卫国程思明
Owner NINGBO DIMINGSI ELECTRONICS
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