I'm not sure that sci.electronics.misc is the right SIG for this question. If there is a more appropriate newsgroup I would appreciate your pointer to it.
I have a project where a 12V DC motor and gear box slowly turns a circular disk. I want to have the disk turn as slowly as possible. I discovered that this 12 DC motor/gear box which has a plate RMP of .45 can be slowed down by supplying it with less voltage. In the case of one of the motors, 4.5 V (from 3 flashlight batteries) turns the motor nice and slowly. The other motor requires around 6 V for it to turn. The motors take .3 of an amp at 12 volts according to their specs.
I am looking for DC voltage regulator that I could put in line with batteries so that I could more exactly choose the speed of the motor.
I looked in the Grainger catalogue for something that might do this and just visited a local Radio Shack but I don't know exactly what I am looking for.
Please tell me what is the name of the gizmo I need for this project. And where I might buy one.
Thanks in advance for your advice.
Michael Eisenstadt