This bistable circuit that drives a relay with a pushbutton was found in the March 1pp6 issue of Electronics Now magazine. A common bipolar with a 1k resistor at the base can be used in place of the FET.
This 3-transistor amplifier stage was found in documentation from 1963. The transistors are made...
This circuit is from a 2004 documentation, and can also be used to signal garages with the use of a...
This circuit was found in General Electric documentation from 1965. The transistors are from that...