Found in a 1993 Electronics Experimenter Handbook, this circuit uses a multimeter to measure capacitance. The circuit is powered by 12 V.
This solid-state relay (SSR) or shield was found in a 1995 Electronics Now. The transistor can be...
The components used in this National Semiconductor circuit are not common today, but the...
The circuit presented in the figure is an amplifier for stereo sources with the Maxim MAX9723...