With this circuit it is possible to add a conductance scale to a common multimeter. The circuit was found in the magazine Electronics Now of February 1997.
This is the circuit of a turntable from the 1970s. We found it in a repair article in the December...
This circuit divides the grid 60 Hz frequency to obtain 20 Hz to drive mechanical watches used at...
This small audio amplifier uses an uncommon integrated circuit today. The circuit is from a...