This circuit produces sounds of 6 different notes depending on the keys activated. The circuit is from a Radio Electronics from May 1965. The transistor must be equipped with a heat radiator.
This circuit uses a loop antenna to receive and amplify signals from the 60 kHz long wave band....
This circuit was obtained from a 1967 magazine. The magazine no longer exists, but the circuit can still...
This two-transistor preamplifier was found in a 1960 Sylvania transistor manual. The output...