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.
This capacitor leak detector was found at Popular Electronics in June 1991. The magazine no longer...
This circuit can generate signals of frequencies up to 1 or 2 MHz, tuned in the capacitor. The...
This circuit switched with the help of small inductors produces a peak voltage above 20 V that is...