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 latched circuit uses an LDR as a sensor. It must be powered by a voltage of 5 V....
This simple light alarm circuit is based on the well-known 4093 integrated circuit and can be...
Analog Devives EVAL AD5941 Electrochemical Evaluation Board This board provided by Mouser...