This circuit was found in an English magazine from 1979. The magazine no longer exists, but the circuit can be easily assembled as it uses common components. Resistor R1 can be changed according to the gain range of proven transistors.
This circuit was found in an English magazine from 1979. The magazine no longer exists, but the circuit can be easily assembled as it uses common components. Resistor R1 can be changed according to the gain range of proven transistors.
