Re: [PSUBS-MAILIST] Re: Motor controller...

[ROUFFIGNAC Laurent <laurent_rouffignac@yahoo.com>]

Hi John,
I started working on your schematic and I have a few
questions for you:
- Why did you add extra flyback diodes , the IXFK
serie already have some in their package?
- Is there any specific reason why you used a H bridge
with only N-channel Mosfet instead of both N and
P-channel Mosfet?
- I have some concerns about the heat sink dimensions.
Are you currently using the hull of your sub to cool
them? :-)
-I was also interrested in using Minn Kota motors. Do
you have any specs on these? Are you already using
them? 
I plan to use 4 of them (2 for the main prop and 2 for
up/down & left/right) but i'm still working on the
mechanical design so I still don't know what are my
power requirements. Looks like I'll be very close to
Ken's needs.

Laurent

--- John Farrington <jrf@prismnet.com> wrote:
> Laurent, thanks for the offer.  I think that would
> be very helpful.
> 
> Ken and I are going to try and hammer out the
> details for exactly
> the type of controller cards that I need, and then
> we'll talk about
> doing some pcb layout.  It would be much cleaner
> having a pcb than
> trying to wire everything by hand.  And, I think
> that once you
> have a design, getting the pcbs made isn't too
> costly (they can
> even be homemade too).
> 
> -John


__________________________________________________
Do You Yahoo!?
Send FREE Valentine eCards with Yahoo! Greetings!
http://greetings.yahoo.com