The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: email@example.com (Bill Allison)
Subject: Re: Help - Power mosfets - difficult load
Date: 27 Oct 2002 02:18:58 -0800
References: <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org>
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:email@example.com...
> > >
> > > > 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
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup