delorie.com/archives/browse.cgi   search  
Mail Archives: geda-user/2015/01/02/17:06:00

X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sbcglobal.net; s=s2048; t=1420236226; bh=CTWR9u7HA8rsFvHAvDRjKFhDsTS++pgBRGGND8YfYg8=; h=Date:From:To:Subject:References:In-Reply-To:From:Subject; b=rImSXnYcdBUa4xnqD+o0+/TwS8mEpqD0miT4cZ6w+3afQDHydX1Z5Hn3dCih1tliThW1lpn3SrEaRbsFw7UK1/Wv3HnevLKpCPhpoThhOJR8QKeo07y7aFFijrMxrhPkW5XobWv8CT0n5DJX/umb9YglRTE8n6O39awdNCi8qxzl1C3cSH62+fCXnnEifHMZEOTpOxlOBGtIeWXBoQYgMQZx/gqyBWXjTlSBVTUtcsZPD8amhZP8ync72UyPiuFd43VrI/lKEicBQkvBJOd5sLV58qeD/OrhLj4cfxCaHLJBAInz6AZd9YOv93r4U7HCSybQDQZdA+Nh8WBBYw7W0Q==
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s2048; d=sbcglobal.net;
b=Xm5UEgi18rVv6Ai1Aj5n7gUMCvU+Pkm9bWpKe67y2BJAxsAwQKp1IDPe/1JJqiYYdZw4vhVbKCzmWwfqalKIJg/4I7LRZPPTKWgcZBQWz8tkGjEnd3FzDJY+Hmkth/oh1a5I8wWI2H+IqLX26lCEgcORr3RedbBD7oP6ZipQjQoWwnw1fPIyKN2xmNZyMmPVyp64Yzq9TIxx/8kzCBl2qDKlmPO+t3BcQz9dmTzL0T4gTlKqnUi/3tlZAzl9qCBRlYB0kLfK9qIW5WTqW+vdOG5dv0jVsV2u5XmDUhWCyvfYKbkaYhYl2ajQH991uoDZSGN5dVYRiF2SFZifxK5v9g==;
X-Yahoo-Newman-Id: 701371 DOT 27959 DOT bm AT smtp112 DOT sbc DOT mail DOT ne1 DOT yahoo DOT com
X-Yahoo-Newman-Property: ymail-3
X-YMail-OSG: r73rSGEVM1kyo4eBXmQNR4C.Wmkg1JbEwcwK6hRATccnXKH
mMTZGyxUGWI1euyFQrV0hdtOMQPS8o3mz1hSC33ODu5Fs7FvFjbSN42TrJzi
_liCAE_aBKqEZ9wU6m1ZGwYNE2Nq1OcW.qE3kuO1fjpkEFKGnivsjyXuU3RS
MTgf0NUoO5omtME6QlgdKhKW..H5AvWk48l6qNh1_OOgerFiYHa_YKeKLuMI
z9S3NjoKSKGhee8yzrHglO_8TLsLKs5eGdHIXQUFlDiwJyTAUX6Cs8TJ3eXS
4j8zaQhOUhgt6Y0u99haEanAdw4EX16AsFIviXc59.toMhE_jsVwwgHMMwU4
TgATGpo6VKQ_ww8Gixh_CQ497c3Y_t1Osxa5bSY3v7I837n6rikD6GKL1fkJ
LJ3klRxbwqgrShV6VrhfU4KMyW3M32rDysbxiieCrCMxE44ssAK5ngjNIMlj
a.oQRJcQZC4KFR1yYJdvG_YGCoXyKZ37VghT5TeHOzTQNWTpz3MgDP9A4b.z
w08ZA_ayxtsmD0ckVGVtoH034J36FSwO09eNutCqHv9b3w951kNVpv68-
X-Yahoo-SMTP: f_DTt3mswBBgAkQlHvfWr7fedPivEj8lM_i1QPTGLa1z0f7XFiw-
Message-ID: <54A71584.3090308@sbcglobal.net>
Date: Fri, 02 Jan 2015 14:02:44 -0800
From: Girvin Herr <girvin DOT herr AT sbcglobal DOT net>
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20131204 Thunderbird/17.0.11
MIME-Version: 1.0
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] mating, both panel mount power connectors
References: <CALSZ9gpx=74ZXDQPXBaUOVtef0aph+tRBYFxL=WNjbjugjETxw AT mail DOT gmail DOT com> <201501021222 DOT 17743 DOT ad252 AT freeelectron DOT net>
In-Reply-To: <201501021222.17743.ad252@freeelectron.net>
Reply-To: geda-user AT delorie DOT com

On 01/02/2015 09:22 AM, al davis wrote:
> On Friday 02 January 2015, Rob Butts wrote:
>> I'd like it to work in such a way that when both boxes are
>> plugged together they are flush to each other.
>>
>> Does anyone know of such connector pairs?
>>
>> PS, this is up to 15 amps.
> Cinch-Jones.
>
> They are rated 10 amps, so get multi-pin connectors and parallel
> the pins.
>
Greetings,
 From experience, I would say be careful paralleling power pins for 
currents over the single-pin rating.  I had a project once that used 
four Molex power connectors connected in parallel on a large COTS 
Multibus backplane.  The connectors failed when one pin increased it's 
contact resistance, transferring power to the other pins, which then 
overheated, increasing their resistance.  The connectors failed in a 
cascade failure and burned up.  The root cause in this case was 
dissimilar materials.  Our connectors had gold plated pins and the COTS 
backplane mating connectors had tin plated pins.  We changed our 
connector pins to (ugh) tin plated and these power connector failures 
stopped.  Just a word to the wise.
Girvin Herr

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019