This circuit was found in the August 1997 Electronics Now magazine. The circuit uses well-known operational codes and generates signals up to 20 kHz.
This circuit consists of a voltage regulator for 6 V batteries with a very low voltage drop. The...
The circuit shown in the figure causes a piezoelectric transducer to emit interval beeps. The 100...
This two-channel bargraph meter uses a single KAA2281 integrated circuit. Found in the January 1991...