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Silicon controlled rectifier dimming constant current power supply, formed LED system, and control method

A technology of LED system and constant current power supply, which is applied in the field of constant current power supply, which can solve the problems of power supply and lamp bead life damage, difficulty in meeting brightness, color temperature, color change requirements, unfavorable long-term stable use of LED products, etc., to achieve operation Simple and convenient, flexible control objects, high practical value effect

Pending Publication Date: 2018-08-24
BLUEVIEW ELEC OPTIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the existing LED lamps are installed in the same place, they usually can only display fixed brightness, color temperature and color, and can only be turned on and off as a whole. Long-term high brightness and high color temperature of LED lamps will also cause damage to the life of the power supply and lamp beads, which is not conducive to the long-term stable use of LED products

Method used

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  • Silicon controlled rectifier dimming constant current power supply, formed LED system, and control method
  • Silicon controlled rectifier dimming constant current power supply, formed LED system, and control method
  • Silicon controlled rectifier dimming constant current power supply, formed LED system, and control method

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Embodiment Construction

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, and the mode of the present invention includes but not limited to the following embodiments.

[0025] Such as figure 1 with figure 2 As shown, the present invention is mainly composed of three parts: a separate AC controller, a thyristor power supply and an LED lamp in terms of system architecture. The 220V city power is first chopped by a separate AC controller and then input to the thyristor power supply circuit. After the thyristor power supply circuit detects the size of the conduction angle, it changes the output power of the power supply according to its size change. The change of the output power Cause the brightness, color temperature and color of LED lamps to change, so as to realize the dimming of LED lamps. According to the needs of actual scenarios, the separate AC controller can be connected to one thyristor power supply, or multiple thyrist...

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Abstract

The invention discloses a silicon controlled rectifier dimming constant current power supply which comprises a separate AC controller with a 485 communication interface and at least one silicon controlled rectifier power supply which is connected to an output end of the separate AC controller. The silicon controlled rectifier power supply comprises a fuse resistor R1, a varistor RV1 connected to the fuse resistor R1 in parallel, a rectifier bridge BD1 connected to two ends of the varistor RV1, a capacitor C3 connected to the output end of the rectifier bridge BD1, a capacitor C4 connected to the capacitor C3 in parallel, a first series branch connected to the capacitor C4 in parallel, a driving chip LYT7504D connected to two ends of the first series branch, and a transformer T1 connected to the driving chip LYT7504D. The separate AC controller is controlled to carry out MOS chopping on mains supply, then the power of an output power supply is adjusted according to the conduction angleof MOS chopping wave, thus the input power of an LED lamp is changed, the purposes of adjusting the brightness, color temperature and color of the LED lamp are achieved, and the problem that the flexible dimming of an LED lamp is difficult to achieve in the prior art can be effectively solved.

Description

technical field [0001] The invention relates to a constant current power supply, in particular to a silicon controlled rectifier dimming constant current power supply and its LED system and control method. Background technique [0002] With the rapid development of science and technology, LED products are constantly developing and replacing. People's initial requirement for LED products is to realize energy saving while realizing lighting. Now, with the increase and change of application scenarios of LED products, people's demand for LED products The requirements are no longer just for lighting and energy saving, but also for technical indicators such as brightness, color temperature, and color of LED products. However, after the existing LED lamps are installed in the same place, they usually can only display fixed brightness, color temperature and color, and can only be turned on and off as a whole. Long-term high brightness and high color temperature of LED lamps will al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/20H05B45/10Y02B20/30
Inventor 李忠训
Owner BLUEVIEW ELEC OPTIC TECH CO LTD
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