PWM driver

[thergen at svn.net]

Interesting article at
http://www.penton.com/ed/Pages/magpages/jan1199/ifd/0111id.htm that has a
blurb on a pwm DC motor control.  It's not directly applicable, but it
does go into detail on its intended application.

There's also a simple circuit do generate 23v if you want to do a high
side driver for your pwm at
http://www.penton.com/ed/Pages/magpages/oct1298/pease/1012bp.htm figure 2.

Tom

On Mon, 1 Feb 1999 rauscher at icst.com wrote:

> 
> 
> I can throw together a circuit to do this. I've used PWM for DC motor
> control circuits before. How about a low side driver, it would be easier
> to do. (This is a switch that grounds the motor).
> 
> For input control, just an analog 0-12V for stopped to full on, with
> all speeds in-between.
> 
> I'll get it together and scanned hopefully before the week is out.
> 
> Oh, do fuel pumps really draw 15 Amps? Ouch.
> 
> One word of caution thou, PWM is electrically noisy. You will want to
> put the controller close to the pump, as not to disrupt every electrical
> device in your car.
> 
> BobR.
> 
> 
> 
> <snip>
> 
> Tom Sharpe wrote:
> 
> >How do you PWM a 15 amp load??? Someone design a circuit please. Can the driver
> >board be mase to work??
> >
> >TIA  TOM
> >
> ------------------------------
> 
>