Unfortunately, the power consumption of the PWM circuit could not be verified experimentally because other circuits use the same power rail. Figure 4 Simulated and measured pulse width for the ...

LED-driver circuits can be dimmed by applying a variable duty cycle (pulse-width modulation, or PWM) to the LED. PWM exploits LED behavior: At higher current levels, the LED’s light output is ...

A second method for generating PWM waveforms uses an ADµC824 MicroConverter. In addition to providing two PWM outputs, it also integrates ADCs, DACs, an 8052-compatible microcontroller, and flash ...

The circuit's output is the PWM signal used by the backlight inverter to achieve digital dimming. V CC is the inverter input (e.g., 12 V), and is also used as the supply for the PWM signal generator.