This circuit is suggested by National Semiconductor in its 1994 Linear Applications Handbook. The Darlington transistor can be any of the TIP series that can control the motor. The engine must be a tachometric sensor. The control pot can be 47k.
This circuit is suggested by National Semiconductor in its 1994 Linear Applications Handbook. The Darlington transistor can be any of the TIP series that can control the motor. The engine must be a tachometric sensor. The control pot can be 47k.