Using the 723 integrated circuit, this circuit was found in an article on power supplies in the August 1971 Radio Electronics magazine. The transistor may be the BD136 on a heatsink.
This basic circuit was found in RCA / GE documentation from the 90s. In it we have the way to...
The ICL8038 is a function generator that appears elsewhere on this site in various applications. The...
We found this voltmeter in a 1977 Radio Shack documentation. The integrated circuit can be the...