We found this circuit in the March 1995 issue of Electronics Now magazine. The circuit has a frequency range determined by C1 and R3. The signal generated is square.
In the figure we have the basic configuration of a function generator with two operational ones,...
This circuit turns on your car's backlight when a vehicle coming from behind gets too close to it...
This shield circuit allows recording of the signal from a serial output on a cassette recorder, with...