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 is one of the many anti-deboucer circuits the reader can find on this site. The base is TTL...
The circuit of the figure is a current regulator with adjustment in the range of 0 to 3 amps. The...
This circuit is intended for signal amplification of electronic musical instruments. We found in a...