This is an improved circuit from the earlier version also found in the April 1972 Radio Electronics magazine. The power transistors must be provided with heat sinks.
This stage for JFETs was found in a 1965 US publication, but is valid for modern components. |...
The transistor of this circuit can be the BC558. The circuit is from an old documentation...
We found this circuit in an English publication from the 80's. The circuit is perfectly current,...