This circuit can use a pendulum sensor. We found this configuration in a 1994 publication. The components used are common and the timing is given by the capacitor C1 which can be changed.
Found in American documentation from 1968, this circuit uses both diodes and a neon lamp to...
This circuit can be used with transmitters in the 3 to 30 MHz frequency range also functioning as a...
This filtered High Side sensor circuit was found in a 2005 Linear Technology application manual....