NNTP-Posting-Date: Fri, 08 Nov 2002 19:04:23 -0600
From: firstname.lastname@example.org (John Fields)
Subject: Re: V regulator input cap size?
Date: Sat, 09 Nov 2002 00:41:53 GMT
Organization: Austin Instruments, Inc.
References: <3DC1DBEA.email@example.com> <firstname.lastname@example.org> <email@example.com> <3DC43C9D.firstname.lastname@example.org> <email@example.com> <3DC47039.firstname.lastname@example.org> <email@example.com> <3DC7C6F1.firstname.lastname@example.org> <email@example.com> <3DC89369.firstname.lastname@example.org> <email@example.com> <3DC9EFC4.firstname.lastname@example.org>
X-Newsreader: Forte Agent 1.5/32.451
X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers
X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly
On Thu, 07 Nov 2002 04:44:29 GMT, Fred Bloggs
>Well if you insist on looking stupid then go ahead and optimize your
>"reactive dropper." I had to place an order for some really cheap parts
>so my entry probably won't be built until Wednesday, a 15 minute wiring
>job. This is an HVAC application so the rule will be that you use a 40VA
>24VAC NEC Class 2 power limited transformer- no rectifier transformers.
>You will measure whatever it is you regulate at 0-25-50-75-100mA
>loading, at line input of 95-115-135 VAC, and at -15 25 and 85oC. The
>operation of the relay proves nothing for reasons I already mentioned-
>it will be enough to substitute an equivalent load resistance- unless
>you're using the coil in a way essential to circuit operation of course.
The operation of the relay over temperature is critical to the
success of the application and, consequently, can't be perfunctorily
dismissed. Such being the case, I think the relay I found earlier
on would be a good choice for us to use in this exercise, and I
won't participate unless you agree to use it in your circuit, as I
will in mine. If you can't afford or don't want to buy one I'll
send you one you can use since I've got to order some myself. Let
me know what you want to do. In addition, the 75 and 100mA output
current capabilities are high for the application and represent, for
me, money badly spenty on unnecessary resources. That is, since the
reactance of the series cap must decrease as the current required
from the mains increases, dollars spent for unneeded extra
capacitance are dollars wasted. Having said that, it seems a relay
with a 300mW 24VDC coil would be a better candidate for this
application. Wanna play that way, or do a one-off for the OP?