This circuit is from an ancient American documentation. The integrated circuit is 741 and the power supply must be symmetrical. The passing band is centered at 1 kHz.
This circuit makes simultaneous control of two up to 150 W incandescent lamps. The circuit is half wave...
This circuit was found in a 1995 documentation and is very simple to assemble, as the components are...
Any sensor or piezo capsule can be used as a sensor in this circuit. The integrated circuit is...