This 1 kHz filter was found in the March 1997 issue of Electronics Now magazine. The circuit is applicable to any operational amplifier with a dual power source.
Found in Datel's documentation from the 1980s, this circuit makes use of the company's operational...
This circuit was obtained in an old magazine from the 1970s. The circuit can still be assembled with...
This LED signaling circuit uses a programmable unijunction transistor (PUT) as a relaxation...