This realistic circuit has longer timings for green and red lights, with shorter timings for yellow. The circuit is from an Electronics Now from May 1994.
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...