Suggested by General Electric in an old documentation, this circuit can use modern SCRs and the transformer has a voltage according to the rail and current of at least 3 A.
We find this circuit in a 2005 Linear Technology manual. The circuit applies to higher current DC...
We found this circuit in a 1972 documentation. However, it can be assembled with more modern...
The purpose of this 1-transistor amplifier is to allow the use of a milliammeter in an application...