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.
We found this circuit in Radio Electronics Special Projects from 1992. The circuit turns on the...
This circuit acts on a relay disconnecting the load when the input voltage exceeds the set limit....
This experimental short-range transmitter came out in a 1972 publication and was designed to...