This circuit was obtained in a French documentation from 1981 and can be easily assembled. The analog instrument itself can be replaced by the current scale of an ordinary multimeter.
The presented circuit generates short pulses using a relaxation circuit with two complementary transistors...
This circuit was found in a Popular Electronics of the 80's. The NE602 functions as a heterodyne...
This circuit, from a 1988 documentation, makes successive actuation of the shower to control the...