This FM receiver tuning step circuit was found in a 1960 documentation. No information about the coils is given, but the FI used at the time was 10.8 MHz.
Suggested by the General Electric Hobby Manual of 1965 this circuit measures voltages from 0 to...
We found this voltage regulator for 5 V with current up to 10 A in an old manual of integrated circuits....
The basis of this circuit is a National Semiconductor operational amplifier that functions as a...