This is an engineering level project in which we use PWM to dim the intensity of the LED light. Here, the DC source is connected to NE555 timer. The PWM signal always depends on the duty cycle, so we can vary the duty cycle through NE555. If we vary the duty cycle, we can generate the pulse with various width. So we use timer to generate the PWM to dimmer the LED or increase brightness of the LED. Get detailed information about this circuit in the post - PWM LED Dimmer using NE555 Timer.
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