This 1950s audio amplifier uses output tubes of type 1625 in its output stage. The Class B circuit provides a few watts of power and uses transformers that are not readily available today.
Found in 1965 General Electric documentation this circuit applies to a LASCR used as an optical...
This circuit, which can be used as a shield, was found in Radio Electronics from the 90s. The...
This preamplifier is intended for the use with magnetic pick-ups. Power supply must have voltages...