Single-fire-wire multifunctional dimmer

Abstract

The invention relates to a single-fire-wire multifunctional dimmer which comprises an MCU processing circuit, an alternating current input protection circuit, a single-fire-wire power-taking circuit,an LDO circuit, an automatic identification phase detection circuit, a MOS drive circuit, a MOS dimming circuit, an overload protection circuit, a synchronous signal acquisition circuit and a brightness adjustment circuit. The automatic identification phase detection circuit can detect the type of a load, thereby switching the mode which matches the load through the MCU processing circuit. The single-fire-wire multifunctional dimmer provided by the invention can keep the same overload point under different working modes.

Description

technical field [0001] The invention relates to a single live wire multifunctional dimmer. Background technique [0002] Due to different loads (inductive loads, such as halogen lamps, capacitive loads, such as LED lights), the current thyristor dimming driver needs to judge the load type and set the dimmer to the corresponding position. The driver will match, it will be safe to use, and the dimming will be smooth. However, it requires very professional personnel to know and be able to set it, and it cannot be used by the general public. [0003] When the load types are different, there will be a 10% difference in the OPP (over power protection point) of the dimmer at this time, resulting in insufficient precision of the protection point and potential safety hazards. [0004] At the same time, the single live wire usually uses a linear voltage regulator circuit, which has the problems of low efficiency, high heat generation, high requirements for power components, and low ...

AI Technical Summary

Problems solved by technology

However, it requires very professional personnel to know and be able to set it, and it cannot be used by the general public.

[0003] When the load type is different, there will be a 10% difference in the OPP (over power protection point) of the dimmer at this time, resulting in insufficient protection point accuracy and potential safety hazards

[0004] At the same time, the single-line power supply usually adopts a linear voltage regulator circuit, which has the problems of low efficiency, high heat generation, high requirements for power components, and low safety factor.

At the same time, when the dimmer is at the minimum brightness or maximum brightness, it often does not match the driver, resulting in flickering problems

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