Homebrew PCBs

On Wed, 22 Jun 2005 02:08:21 +0200, Bill Maxwell <wrmaxwell@...>  
wrote:

>
> On the motor speed question i would be tempted to first try electronic
> control and resort to gear changing only if that failed to get an  
> adequate
> speed reduction.
> Bill


Those small geared motors are often AC syncronous.
You could try a "poor man's frequency converter" which basically allows a  
positive halfwave to go through, then waits, then lets a negative through,  
waits, positive, etc.. But usually they do not speed control without a  
frequency converter which is rather pricey even used.


ST