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Isolated LED light source control circuit

A technology of LED light source and control circuit, applied in the direction of electrical components, etc., can solve the problems of easy interference with other equipment, inability to meet multiple supplementary light sources, lack of isolation circuit, etc., and achieve the effect of preventing interference

Pending Publication Date: 2020-05-29
GUANGZHOU HOPPEN ELECTRONICS MDT INFOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can only drive one light source, which cannot meet the function of implementing multiple supplementary light sources in image acquisition; it does not have an isolation circuit, which is particularly easy to interfere with other devices, such as tablet computers; it does not have the function of switching different light sources through the system

Method used

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  • Isolated LED light source control circuit
  • Isolated LED light source control circuit
  • Isolated LED light source control circuit

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Embodiment Construction

[0022] 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.

[0023] In the embodiment of the isolated LED light source control circuit of the present invention, the structural diagram of the isolated LED light source control circuit is as follows figure 1 shown. figure 1 Among them, the isolated LED light source control circuit includes a first power conversion circuit 1, a second power conversion circuit 2, a USB to TTL circuit 3, a main control circuit 4, a photoelectric isolation circuit 5, a transistor control circu...

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Abstract

The invention discloses an isolated LED light source control circuit. The circuit comprises a first power source conversion circuit, a second power source conversion circuit, a USB-to-TTL circuit, a main control circuit, a photoelectric isolation circuit, a triode control circuit and an LED driving circuit; the USB-to-TTL circuit is connected with the main control circuit; the main control circuitis connected with the photoelectric isolation circuit; the second power source conversion circuit is connected with the main control circuit and the photoelectric isolation circuit; the triode control circuit is connected with the photoelectric isolation circuit and the LED driving circuit; the first power source conversion circuit is connected with the LED driving circuit; the triode control circuit comprises a plurality of groups of triode driving units; the LED driving circuit comprises a plurality of groups of LED driving units; and each group of LED driving units is connected with the corresponding triode driving unit. The isolated LED light source control circuit can drive multiple paths of light sources, can meet the functions of multiple light supplementing sources, can effectively prevent interference, and has the function of switching different light sources through a system.

Description

technical field [0001] The invention relates to the field of LED light sources, in particular to an isolated LED light source control circuit. Background technique [0002] The existing LED driving circuit is composed of an LED driving chip, a filter capacitor, a current sampling resistor, a freewheeling diode, an inductor and an LED lamp group. Control the LED on or off by controlling the DIM (dimming) pin of the driver chip, or control the display brightness of the LED by outputting PWM waves to the DIM pin. It can only drive one light source, which cannot meet the function of implementing multiple supplementary light sources in image acquisition; it does not have an isolation circuit, which is particularly easy to interfere with other devices, such as tablet computers; it does not have the function of switching different light sources through the system. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an isol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/30
Inventor 许启扬吴泳波林建材何兆强王小飞
Owner GUANGZHOU HOPPEN ELECTRONICS MDT INFOTECH CO LTD
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