This circuit was obtained from a 1966 General Electric documentation. It can serve as a basis for demonstrations of how to decode segments of a display using discrete components.
This circuit uses unusual operational amplifiers, but equivalents can be tried. FETs can also be...
This circuit was obtained in a 1991 publication. What it does is to amplify a signal with unit...
This small digital transmitter uses a 1 MHz crystal, or another nearby frequency, to produce a...