This simple source uses two 2N3055 transistors that must be equipped with good heat sinks. The source has no protection, only an input fuse. The diodes are for 5 A x 50 V or more.
Found in a 90s ARRL Handbook, this circuit is intended for the production of signals in the side...
This is the circuit of a hearing aid amplifier manufactured by Sony in the 1960s. The circuit was...
This variable frequency oscillator generates signals that have a recurrence frequency determined by...