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From: firstname.lastname@example.org (Bill Allison)
Subject: Re: Help - Power mosfets - difficult load
Date: 27 Oct 2002 02:18:58 -0800
References: <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <email@example.com>
NNTP-Posting-Date: 27 Oct 2002 10:18:59 GMT
"Phil Allison" wrote in message news:...
> "Bill Allison" wrote in message
> > "Phil Allison" wrote in message
> > > "Bill Allison" wrote in message
> > > news:firstname.lastname@example.org...
> > >
> > > > For the benefit of new participants, I'm not that concerned about
> > > > motor or battery efficiency as the winch, currently equipped with
> > > > crude tension sensor driving on/off relay, has power to spare. My main
> > > > concern is keeping within the (expensive) fets' ratings.
> > >
> > >
> > > ** And you have studiously ignored advice on exactly that point.
> > No - questioned, debated (sure - ignorantly and unwisely or with
> > tongue in cheek on occasions) but absolutely *not* ignored it.
> ** You "ignored" my comments about the risks of using a direct radio
> link to the PWM generator - one glitch could spell curtains to those exey
No - I pointed out that I would use a current generation fail-safe
receiver. "Glitches" in RC kit are a thing of the past. The servo
output from the RX is *guaranteed* to be either that commanded by the
transmitter or that output by the programmable receiver fail-safe. For
bad signal I have the choice of "hold last command" or "switch to a
predetermined setting" (I would set throttle closed). For low battery
I can have throttle close to warn pilot but allow him/her to re-open
it to maintain control.
> > > ** Keep all the blown fets and post a picture later on will you.
> > I refuse to be unfriendly back! I'll assume there's an invisible
> > smiley at the end of your sentence :)
> ** I am quietly confident of a nice graveyard pic.
but wishing me success nevertheless, right? :)
Anyway, the figures I'm seeing in the literature and the figures and
calcs in Winfield's posts tend to suggest that you will be
> .. . . . . ............. Phil
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