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 circuit allows fluorescent lamps to be powered up to 40 W from 12 V car batteries. The...
We found this circuit in an American publication from 1977. Operationals can be type 741 with...
Found in a 1978 publication, this circuit uses germanium transistors and drives a small 20 to 50...