This receiver circuit was found in documentation from 1924. The circuit uses two batteries, the high voltage one being 90 V.
This audio step operates directly with the 110 V mains voltage rectified and reduced. The output...
The MC1436 can also be used on this circuit found in Motorola's 1993 Linear Interface ICs. The...
The FET admits equivalents like the BF245 in this circuit that we find in a documentation from the...