This circuit can keep a set of lamps on for up to 1 minute, time given by C2 and R2 that can be changed. The load depends on the relay. The circuit is old, from 1988 documentation, but totally viable today.
Servo motors operate from the changes in the pulse width in a range between 1 and 2 ms. The...
This circuit sources a Constant current to a load. The current is determined by R2. In the...
Kemet offers by Mouser Electronics engineering kits containing capacitors, super capacitors,...