We found this circuit in an old American documentation, but the circuit can still be assembled with ease as the used components are still available. MOSFETs admit equivalents.
This control for a small servomotor with a current of a few hundred milliamps was found in an...
This circuit was obtained from Hands-On Electronics, an American magazine of January 1987. The...
Relays up to 100 mA can be driven by the 555 with the recommended circuit. The circuit is from an...