Found in the July 1970 Radio Electronics magazine, this circuit has an adjustable activation time that depends on capacitor C1. The SCR may be a 106 series equivalent.
This game of speed or who is the fastest uses a digital display. The circuit was found in a 1991...
This circuit was found in an old Electronic Design. It makes use of sidacs and operational not very...
The figure shows an application of the LM377 in a small inverting stereo amplifier with output...