This signal injector and tracer (follower) was found in an old American documentation. The transistors can be general use and power is made with one or two common cells.
For a negative voltage of -48 V, this circuit from the 2005 Linear Technology manual makes use of an...
This signal follower or signal tracer was found in an English publication from 1989. The...
We found this circuit in an old documentation. The circuit can supply loads up to 10W with the...