We found this circuit in the June 1992 issue of Radio Electronics magazine. The sensor is a common diode. The circuit is powered by the power grid from a 12 V transformer.
This timer for small intervals, but which can be increased with the increase of R1, was obtained in an...
This circuit has a sensitivity of 2uW. We found it in documentation from the 1980s. The integrated...
November 2016 - The TL3780 ultra-miniature E-switch touch switches can now be obtained from Mouser...