This circuit uses opposing MOSFETs operating on a 6 to 15 V input voltage. The circuit is from 1997 Linear Technology Applications and uses common components at the time.
This 2003 circuit serves to digitally show the intensity of a sound captured by a microphone....
The circuit shown in the figure makes it possible to control a stepper motor via a PC's serial port...
This circuit was found in an old American documentation. Its purpose is a proportional scanning signal...