This circuit consists of an electrostatic sensor that can check if a cable is energized by simply approaching it. The circuit is from an Electronics Now from December 1998.
This amplifier with complementary symmetry output and good sound quality was found in...
This IR light sensor circuit was found in the July 1992 issue of Radio Electronics magazine. It is...
The resistors R1 and R2 consist of 8 220 ohms x 2 W resistors connected in parallel. The...