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 circuit was found in old American documentation. It has 40 dB gain between 10 Hz and 10 kHz....
In the figure we have the way to reset (turn off) an SCR using a push button switch on a...
This game aims to make you discover which is the combination of activated switches that make the...