We found this circuit in a Japanese publication in 1967. The circuit consists of a 15 W audio amplifier with germanium transistors including a voltage indicator power supply.
We found this circuit in a 1967 Experimenters Handbook. The circuit can be implemented with other...
This circuit is from an old documentation but can be implemented with a BD136 for Q1 and 2N3055 for...
In the figure we have the basic configuration of an inverter transconductance amplifier, as...