This circuit provides a delay for the activation of an alarm, giving the owner time to leave the premises. The circuit is from the 1995 Encyclopedia of Electronic Circuits Volume 5.
This Star Trek red alert circuit was found in the July 1990 issue of Radio Electronics magazine. The...
This timer for short intervals was found in a documentation from 1966. The transistor is made of...
This circuit was found in many record players with crystal phono pickups. The output power is 800...