Overlooked the obvious, since they are dc motors just take a really big
xformer and rectify it, ripple is no problem. Have to see how that works.

-----Original Message-----
From: Roman Black [mailto:fastvid@EZY.NET.AU]
Sent: Tuesday, December 11, 2001 5:57 AM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [EE]: Super cheap 5v smps regulator


Thats an important point. So you probably won't
need fine control of motor speed and positioning?
If you can get by with 12v to your motors via simple
relay and end-travel switches then driving the motors
by PWM is a complication you just don't need.
So why do you need to convert 36v to drive the motors?
If it is for an air conditioning application can't
you just use a 12v mains transformer of suitable
current ability?
-Roman


Batchellor, Gary wrote:
>
> This is a quasi home automation type project for HVAC. It will be driving
> some damper doors open or closed depending on temp, turning on or off
> heating/a.c., sensing air flows and a humidity device thrown in.
>
> -----Original Message-----

> Batchellor, Gary wrote:
> >
> > Sorry I left out some of the info.  What total current range? The 12v
will
> > be occasional loading (motors), so it will be 10amps or
> > nothing. The 5v will be from a low of .5a to a max of 3a. Down to zero
> amps?

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