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Multifunction constant flow module used for high power LED

A multi-functional, high-power technology, applied in the direction of output power conversion device, DC power input conversion to DC power output, instruments, etc., can solve the problems that cannot meet the requirements of LED optimal power supply, achieve low power consumption, eliminate Effects of electrical interference and amplitude stabilization

Inactive Publication Date: 2005-05-25
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing constant current modules and constant current devices output a constant current of direct current, which cannot meet the requirements of LEDs for the best power supply.
Patent No. 94103758.4 provides a DC constant current module, which is composed of a constant current circuit module, its control module and a modulation circuit module. Although it can provide a current of several amperes, the output is a DC current

Method used

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  • Multifunction constant flow module used for high power LED
  • Multifunction constant flow module used for high power LED

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Embodiment Construction

[0018] See attached figure 1

[0019] The multi-functional constant current module for high-power LEDs of the present invention is composed of a constant current circuit and its control and modulation circuit, installed in a flat rectangular small box, and the heat sink of the high-current element in the current adjustment unit 5 is welded on a piece of metal The cover plate is used as a heat sink, and its negative end is connected to one end of the sampling unit 6, and the other end of the sampling unit 6 is the "power ground" lead-out terminal GND; the comparison amplifier 4 and the reference source 3, the modulation pulse signal input stage 1, the manual The common ground terminal V of the current regulation unit 2 in - , doubles as the negative pole of the input power supply and the "signal ground" terminal; the other terminal of the manual current adjustment unit 2 is connected to the adjustment terminal Adj; the input terminal of the modulated pulse signal is the pulse...

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Abstract

The present invention relates to an pulse constant-current module for LED illumination. It is composed of controllable current unit, sampling comparison unit and amplification and regulation unit. Its outputted current can be controlled by pulse signal. Said pulse constant-current module has the practical functions of that it can make output magnitude be stable and adjustable, and can implement ON / OFF under the action of various control circuits.

Description

technical field [0001] The invention relates to a constant current device for a high-power LED power supply, in particular to a multifunctional constant-current module for a high-power LED. Background technique [0002] The requirements of high-power LEDs for an ideal power supply are: the current is a pulse waveform, its duty cycle is adjustable, and its amplitude is constant and adjustable. Existing constant current modules and constant current devices output a constant current of direct current, which cannot meet the requirements of LEDs for an optimal power supply. Patent No. 94103758.4 provides a DC constant current module, which is composed of a constant current circuit module, its control module and a modulation circuit module. Although it can provide a current of several amperes, the output is a DC current. Contents of the invention [0003] The present invention aims at the requirements of high-power LEDs, and the prior art cannot meet the needs of high-power LED...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/56H02M3/155
Inventor 范雅俊吕品桢
Owner ZHEJIANG UNIV