0-10 V PWM device convenient for dimming and color modulation

Abstract

The invention discloses a 0-10 V PWM device convenient for dimming and color modulation. The PWM device comprises a mounting seat, a heat dissipation unit and a damping unit; a single chip microcomputer and a 0-10 V dimmer are respectively mounted at the top of the mounting seat, and the side surface of the 0-10 V dimmer is connected with a wire holder through a telescopic cable; the heat dissipation unit comprises a refrigeration sheet, a heat conduction silica gel sheet and heat dissipation fins, the refrigeration sheet is installed at the top of the 0-10 V light modulator, the cold end of the refrigeration sheet makes contact with the top of the 0-10 V light modulator, the heat dissipation fins are evenly arranged at the hot end of the refrigeration sheet, and the heat conduction silica gel sheet is bonded to the connecting position of the refrigeration sheet and the heat dissipation fins; and according to the 0-10 V PWM device convenient for dimming and color modulation, stepless dimming and color modulation can be realized, compared with silicon controlled rectifier dimming, the efficiency can reach 88% or more, no requirement on a dimmer is required, only 0-10 V voltage is supplied, the application is simple, the compatibility is good, the precision is high, the wiring is convenient, the wiring efficiency is high, the heat dissipation effect is good, and the shock resistance is good.

Description

technical field [0001] The invention relates to the technical field of PWM devices, in particular to a PWM device with 0-10V for easy dimming and color adjustment. Background technique [0002] At present, most of the LED dimming methods are SCR dimming. The SCR dimming performance is poor, resulting in a narrow dimming range. The SCR is a semi-controlled switch. It only has the function of turning on the current, but not Completely cut off the current, even if it is adjusted to the lowest level, there is still a weak current passing through, and the characteristics of LED micro-current light emission, so that there are a large number of thyristor dimming LEDs still have a weak light after turning off the phenomenon, which has become the current LED dimming The problem of way to promote; [0003] Due to the densely distributed wiring ports of the PWM device in the prior art, it is difficult to connect due to mutual shielding of cables during wiring. At the same time, its he...

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Problems solved by technology

[0002] At present, most of the LED dimming methods are SCR dimming. The SCR dimming performance is poor, resulting in a narrow dimming range. The SCR is a semi-controlled switch. It only has the function of turning on the current, but not Completely cut off the current, even if it is adjusted to the lowest level, there is still a weak current passing through, and the characteristics of LED micro-current light emission, so that there are a large number of thyristor dimming LEDs still have a weak light after turning off the phenomenon, which has become the current LED dimming The problem of how to promote;

[0003] Due to the dense distribution of wiring ports in the prior art PWM device, it is difficult to connect due to the mutual shielding of cables during wiring. At the same time, its heat dissipation is poor and cannot meet the needs of use.

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