Simply adding a diode and potentiometer to a 555 timer operating in the asynchronous mode yields a pulsewidth modulator (PWM) with a duty factor adjustable from 1% to 99% (Fig. 1).

Microprocessors typically control dedicated LED drivers, enabling features such as analog or PWM (pulse-width modulation) for LED-current control, independent control of each LED, and reading LED ...

I can go buy the components to do 555 timer PWM circuits if all I want is PWM. Then again, if I compare the price, that free arduino is a much cheaper solution than buying 2xcaps, ...

Hans Camenzind, the designer of the popular 555 timer IC died this week in Silicon Valley. ... VCO, phase-locked loop, comparator, PWM modulator, frequency divider and DC-DC converter.

The popular 555 timer can be used as a PWM/Class-D amplifier for musical instruments or other applications. It can use a wide supply range of 4.5-16V and produce 200mA of drive. The audio is fed to ...

With a little work, you could probably adapt this idea to any number of circuits out of the 555 playbook, like a PWM generator, for example. There’s almost nothing a 555 can’t do.