This circuit provides a logic output signal when the voltage exceeds a certain value. The circuit is from the 1994 Linear Applications Handbook by National Semiconductor.
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...