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Drive circuit

A technology for driving circuits and circuits, which is applied in the field of circuits, can solve problems such as unfavorable secondary development, post-maintenance, and heavy workload, and achieve the effect of facilitating secondary opening and post-maintenance

Inactive Publication Date: 2017-04-19
OCEANKING DONGGUAN LIGHTING TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the LED drive circuit is generally powered by mains power, and the voltage used by the chip used in the drive circuit is generally DC low voltage. Therefore, when designing the drive circuit, it is necessary to design an AC-DC or DC-DC conversion circuit, and the LED drive circuit needs to be adjusted. During post-maintenance or secondary development, such as changing the specific function of the LED drive circuit from light-sensitive dimming to clock dimming, the LED drive circuit needs to be redesigned, resulting in a heavy workload in the design process, which is not conducive to secondary development and post-production. maintain

Method used

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Embodiment Construction

[0030] The embodiment of the present invention provides a driving circuit in the embodiment of the present invention, so as to facilitate subsequent maintenance and secondary development of the circuit.

[0031] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0032] The terms "first", "second" and "third" in the specification and claims of the present invention and the above drawings ar...

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Abstract

The embodiment of the invention discloses a drive circuit, including a light emitting diode power supply circuit and a light emitting diode control circuit. The light emitting diode power supply circuit includes an AC-to-DC circuit and a dimming circuit, the power input end of the AC-to-DC circuit is connected with an operating voltage, the voltage output end of the AC-to-DC circuit and the power supply end of the light emitting diode control circuit are connected, the input end of the dimming circuit is connected with the pulse width modulation signal output end of the light emitting diode control circuit, and the output end of the dimming circuit is connected to the light emitting diode for supplying the light emitting diode with a stable voltage. The light emitting diode control circuit is used for supplying power by using the light emitting diode power supply circuit and outputting the pulse width modulation signal to control the output end of the dimming circuit. With the drive circuit, secondary development and later maintenance of the light emitting diode drive circuit can be conveniently carried out.

Description

technical field [0001] The invention relates to the field of circuits, in particular to a driving circuit. Background technique [0002] A light emitting diode (Light Emitting Diode, LED for short) drive circuit is an important part of the LED lamp, and is used to output a constant current to the LED load to drive the LED lamp to work normally. [0003] At present, the LED drive circuit is generally powered by mains power, and the voltage used by the chip used in the drive circuit is generally DC low voltage. Therefore, when designing the drive circuit, it is necessary to design an AC-DC or DC-DC conversion circuit, and the LED drive circuit needs to be adjusted. During post-maintenance or secondary development, such as changing the specific function of the LED drive circuit from light-sensitive dimming to clock dimming, the LED drive circuit needs to be redesigned, resulting in a heavy workload in the design process, which is not conducive to secondary development and post-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/10H05B45/00
Inventor 周明杰孙轶徽
Owner OCEANKING DONGGUAN LIGHTING TECH