Figure 1 Analog PWM circuit using triangle wave generator and comparator. In this Design Idea, we show an alternative circuit. It uses very little power, can be implemented in a small silicon area, ...

A pulse generator or a microcontroller can provide the PWM input, which can vary in frequency and duty cycle. The circuit shown can accept signals with 1% to 99% duty cycles.

This circuit is serviceable, but the parts count is high and there is no way to improve on the 1.1 second settling time, and no way to “hold” the analog value without a continuous PWM signal. Improved ...

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.

If I read his schematics and code correctly, he is sending a 500 Hz PWM signal of between 0% to 100% duty cycle through a transistor. That’s useful to drive a lot of different things, but not ...

When a PWM drive is used with brushed DC motors, the rotor’s internal inductance acts as a current filter which is good for the drive circuit. However, other design parameters, such as PWM ...

…for the “pwm to voltage converter”, the ramp would have to be synced to the pwm signal. In my mind, the pwm freq would have to be fixed in order to be sure that the ramp signal would be able to start ...

CMOS clock generator creates a stable high frequency clock signal with minimal power dissipation, remains operational over an extreme temperature range, and does not require external components.