This stage was found in a 1964 Electronic Design. The transistors are of the time and the shape of the signal obtained is shown in the diagram.
The indicator instrument of this transistor tester, from an Argentine publication of the 1970s,...
This circuit uses two oscillators to produce a sound that seems the sound of a ring-bell. The...
The accuracy of this multimeter depends on the accuracy of the used resistors. The circuit uses a...