This circuit was found in a documentation of the 80s, having didactic purpose. For R1 values between 10k to 1M can be used. Transistors are general purpose types.
May 2017 - Mouser Electronics announced the availability of the new P7 CoolMOS transistors from...
We found this amplifier in the Philips Databook of 1990. The stereo circuit has power that reaches 6...
We found this circuit in documentation from the 90s. The circuit uses components that are still...