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Combination circuit and control circuit

A technology of combining circuits and control circuits, applied in the field of lighting, can solve problems such as LED flickering

Active Publication Date: 2020-03-31
OPPLE LIGHTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the same way, in the LED products that switch the brightness of the LED, the LED will flicker visually when the switch is switched quickly.

Method used

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  • Combination circuit and control circuit
  • Combination circuit and control circuit

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Embodiment Construction

[0034] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0035] An embodiment of the present invention provides a combined circuit, which is applied to an LED drive circuit, see figure 2 , the topology of the LED drive circuit in the embodiment of the present invention adopts a floating high power factor BUCK circuit (ie, a step-down conversion circuit), and the application process of the combined circuit of the present invention is introduced. The combined circuit includes a detection ...

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Abstract

The invention provides a combination circuit and a control circuit. The combination circuit is applied in an LED driving circuit and includes a detection module and a driving and logic conversion module connected thereto. Wherein, the detection module detects the state of the external switch, generates a detection signal according to the detected state of the external switch, and sends the detection signal to the driving and logic conversion module. The drive and logic conversion module receives the detection signal from the detection module, generates a drive signal according to the detection signal, and uses the state of the drive signal to drive the working state of the discharge module for discharging the output electrolytic capacitor of the LED drive circuit. Therefore, in the embodiment of the present invention, the detection module and the driving and logic conversion module cooperate together to drive the discharge module to discharge the output electrolytic capacitor of the LED drive circuit, so that the residual energy on the output electrolytic capacitor will not cause the LED light source to emit light when it emits light. produces flicker.

Description

technical field [0001] The invention relates to the technical field of lighting, in particular to a combined circuit and a control circuit. Background technique [0002] Due to the advantages of energy saving, environmental protection, high efficiency and safety, LEDs are widely used in landscapes, street lamps and backlights of electronic products. With the wide application of LEDs, there are more and more demands on the market for products that use switches to switch LED color temperature or brightness. However, in the actual use of products that use switches to switch LED color temperature or brightness, especially for high power factor For some LED products, when using the switch to switch the LED color temperature or brightness, there is a problem of LED lights flickering, which causes poor user experience for users of LED products. [0003] For example, using figure 1 The circuit shown has the problem of LED flickering when switching the LED color temperature. First...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B45/10H05B45/30H05B44/00
CPCH05B45/00Y02B20/30
Inventor 张平伟杨巍巍
Owner OPPLE LIGHTING