This circuit was found in a 303 Circuits issue of Elektor magazine from the 1990s. The circuit uses an equivalent operating system. The source is not symmetrical.
This circuit was found in a 1992 publication. Its purpose is to time the activation of a doorbell...
This automotive circuit was found in the June 1997 issue of Electronis now magazine. The circuit uses...
This oscillator was found in the January 1996 issue of Electronics Now magazine. The frequency is given by...