This lead-acid battery charger was found in a Popular Electronics from the 90s. The circuit has a maximum current of 2 A, being suitable for powering inverters in emergency lighting systems.
This flip-flop using two bipolar transistor was found in a publication of the year 1968. The...
This circuit was found in the August 1970 issue of Radio Electronics magazine. It employs RCA's...
The 74123 TTL integrated circuit consists of a monostable that can be configured to generate...