We found this circuit in the 1990 Motorola Linear Databook. The circuit must use symmetric source and has 10times the voltage gain.
To use the instrument for AC measurement, the tips are A and B. For CC use tips A or B for...
The interesting circuit shown in the figure, can have its gain digitally controlled and present two...
This simple MW radio was found in a 1975 publication, but it can be mounted with BC548...