I found tis circuit in na old documentation from 1958. The circuit uses germanium transistor availble that time and hard to obtain today. The circuit is indicated for phono applications using variable reluctance transducer.
This small audio amplifier uses germanium transistors and a 12 V supply. The circuit is from a...
This circuit is from 1967 General Electric documentation. It uses SUS which are not very common...
This high input impedance circuit uses a symmetrical source. Found in the October 1993 issue of...