Suggested by an old RCA manual, this circuit makes use of the period components. Data for the transformer is provided in the original documentation from the 1960s.
This circuit can be implemented with other operational amplifiers. The formulas for calculating the...
This circuit is from a 1953 publication, consisting of an AM radio with 3 germanium transistors that,...
The sensor of this circuit is a common silicon diode and it directly drives a small cooler with a...