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Broad input voltage dimming driving circuit

A voltage dimming and drive circuit technology, applied in the field of dimming drive, can solve the problems of user inconvenience and safety accidents, and achieve the effect of improving safety

Inactive Publication Date: 2016-08-10
LINKUN DONGGUAN SEMICON LIGHTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a wide input voltage dimming drive circuit for the deficiencies of the prior art, which overcomes the inconvenience caused to users by the thyristor dimming drive power supply only being able to adapt to a single input voltage system in the prior art Defects that are likely to cause safety accidents

Method used

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  • Broad input voltage dimming driving circuit

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Embodiment Construction

[0014] Such as figure 1 As shown, the wide input voltage dimming drive circuit of the present invention includes a rectification filter circuit, a main control circuit and an output circuit connected in sequence, wherein the main control circuit includes: field effect transistor Q1, field effect transistor Q2, main control chip U1 and transformer T1, the gate of the field effect transistor Q2 is connected to the capacitor C13, the two ends of the resistor R9 are respectively connected to the capacitor 13 and the capacitor C2, the drain of the field effect transistor Q2 is connected to the capacitor C3, and the two ends of the resistor R19 and the inductor L4 are connected in parallel to the capacitor C2 , the common terminal of the capacitor C3 and the drain of the field effect transistor Q2, the two ends of the resistor R8 are respectively connected to the source of the field effect transistor Q2 and the capacitor C3, after the resistor R2 and the resistor R3 are connected in ...

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Abstract

The invention discloses a broad input voltage dimming driving circuit comprising a rectification and filtering circuit, a master control circuit and an output circuit which are connected in turn. The master control circuit comprises a field effect transistor Q1, a field effect transistor Q2, a master control chip U1 and a transformer T1. The broad input voltage dimming driving circuit is suitable for 100-277Vac broad input voltage. The problem of system selection does not need to be worried by application of the broad input voltage dimming driving circuit. Safety of using LED light sources can be greatly enhanced by the broad input voltage dimming driving circuit.

Description

technical field [0001] The invention relates to the technical field of dimming driving, in particular to a wide input voltage dimming driving circuit. Background technique [0002] At present, LED lighting products have been popularized in a large number, replacing the use of traditional lighting products, but the existence of traditional electronic ballasts and dimmers leads to unsatisfactory advantages and effects after use. One of the reasons is the dimmer. Compatibility issues. There are two systems of low-voltage input (110 volts) and high-voltage input (220 volts) in the existing technology SCR dimming power supply. Users must first select the system when using it. If the selection is not appropriate, the input voltage is not distinguished. Often burn out the drive power, causing safety accidents. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a wide input voltage dimming drive circuit for the deficiencie...

Claims

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Application Information

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IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/37
Inventor 廖玉柱
Owner LINKUN DONGGUAN SEMICON LIGHTING