This circuit was found in the April 1998 issue of Electronics Now magazine. The circuit uses common operational amplifiers and uses a dual power supply.
Found in an Elektor from the 90s, this circuit can be powered directly by the power grid. The...
This amplifier was published in the July 1961 Radio Electronics magazine. It announced the release of...
The speed of the motor connected to this circuit depends on the amount of light that strikes the...