Using old germanium transistors like the CK722, this circuit has good gain. We found it in a publication from the 50s.
This application circuit for the AD6521C was found in Radio Electronics from the 90's. The circuit...
This regulator is based on the SFC2308 integrated circuit, which is quite old, therefore difficult to...
This circuit has an output that provides the average value of the rectified voltage. Operational...