We found this transistor circuit in a 1967 General Electric documentation. The circuit makes use of components that can still be easily found on the market, and the SCR may be a 106 type.
This SCS counter circuit was found in a 1964 General Electric documentation. The circuit has a...
This simple 1-transistor reflex receiver was published in Radio Electronics magazine in September 1959....
Operational amplifiers used in this 80's circuit is not very common today, but the setting can be...