Found in a 1967 Delco documentation, this circuit can deliver power from 40 to 50 W at 8-ohm load. The response ranges from 20 to 20 000 Hz. No information is given about the transformer used.
This circuit is a variation of the common grid dip meter, having been found in a 1975 publication on FETs....
The FET of this circuit of a 1971 publication may be the BF245. The circuit serves as a voltage...
This configuration was found in old documentation and is valid for most general purpose NPN...