This circuit can be used as an answering password system in a store, office, or other location. The circuit is from Intersil using components of the time. The circuit is from the 80's.
This triac temperature control circuit was found in an 80s power semiconductor documentation. The circuit...
This configuration using a CMOS IC produces a 1 MHz signal. The circuit can be used as clock in...
We find this circuit in an American 1980s documentation. The circuit can still be assembled...