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.
This small audio amplifier uses germanium transistors and a 12 V supply. The circuit is from a...
This simple circuit was found in an old documentation. The transistor can be changed according to the...
This amplifier, of excellent quality, provides a power of 40 W IHF, or 22 W RMS, in a load of 8...