This circuit can be used with motors or resistive loads, such as heaters and incandescent lamps. The circuit is from Popular Electronics from the 90s. All components used are common.
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...