LED dimming circuit
A dimming circuit and control circuit technology, applied in the direction of light source, electric light source, electrical components, etc., can solve the problems of low precision and narrow dimming range, and achieve the effect of high application value and expanding the range of dimming.
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[0015] An LED dimming circuit, the LED dimming circuit includes a control circuit, a clock module, a phase shift module and a PWM comparison module, the control circuit is connected to the clock module, the phase shift module and the PWM comparison module, and the control circuit passes Control the clock module, phase shift module and PWM comparison module to generate corresponding dimming signals. The clock module is connected to the phase shift module and is a clock signal that provides a reference for the dimming frequency. The phase shift module is based on the access of the load condition, frequency division and phase shift are performed on the input reference frequency, the PWM comparison module is connected to the phase shift module, and the corresponding dimming package is generated through the result of frequency division and phase shift by the phase shift module under the action of the control circuit Network signal, thereby changing the brightness of the light.
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