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.
The LM12 integrated circuit can control motors up to 4 A in the configuration indicated by...
This circuit uses a power component that is not common today, being recommended by Motorola in the...
This circuit was obtained from Hands-On Electronics, an American magazine of January 1987. The...