Re: (ET) Lift motor control

[maxmatic comcast net]

Rod,

I would really love to see a schematic of like that! In fact, if you want 
webspace to share it, I can put it up at www.maxmatic.com/electrak.htm.

Best to you all

-M

 

--
http://www.maxmatic.com/
> Ralph,
> You should have no problem with this arrangement
> if the control is a high frequency (like 20kHz)
> switching type (most of them are)
> I would add a safety circuit to insure the speed
> control didn't go above 1/2.
> Even better yet, design a speed control with
> a comparator such that it always puts out an average
> of 18V regardless of the battery voltage.
> I can show you a circuit if interested.
> Rod
> 
> --- Ralph & Elaine Vogan <ralphgv centurytel net>
> wrote:
> > Hi,  I was wondering if anyone has hooked a PWM
> > controller to a lift motor.  Would it harm the motor
> > because it would still be getting 36 volt pulses?  I
> > found a place that has 20 Amp 36 volt controllers
> > for less than $45.00.  I don't know if they are PWM
> > or another type, but if set for 1/2 speed, maybe we
> > could get rid of our 18 volt tap.  These controller
> > are made for electric scooters.  Also, has anyone
> > tried them on lights?  
> > 
> > Ralph Vogan 
> > ralphgv centurytel net 
> > > _______________________________________________
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> > Elec-trak cosmos phy tufts edu
> >
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> > 
> 
> 
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