Today's Message Index:
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1. 07:11 AM - Std density D sub pins. (Tim Andres)
2. 09:39 AM - Re: Std density D sub pins. (Robert L. Nuckolls, III)
3. 10:06 AM - Lamar Super-Switch solid state contactor (Robert L. Nuckolls, III)
4. 10:32 AM - Re: Std density D sub pins. (Tim Andres)
5. 10:51 AM - Re: Std density D sub pins. (Bill Allen)
6. 12:20 PM - Re: Std density D sub pins. (donjohnston)
7. 12:22 PM - Re: Std density D sub pins. (donjohnston)
8. 02:33 PM - Re: Std density D sub pins. (Robert L. Nuckolls, III)
9. 02:37 PM - Re: Re: Std density D sub pins. (Robert L. Nuckolls, III)
Message 1
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Subject: | Std density D sub pins. |
Bob, what is the current rating on the Std density D sub pins? This is re: your
avionics ground bus and the 18 gauge com wires going into it. I have the oversize
pins that accept 18 awg, but I'm thinking the ~8 amps intermittent load needs
to be divided over two pins.
Thanks
Tim
Message 2
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Subject: | Re: Std density D sub pins. |
At 09:10 AM 3/22/2014, you wrote:
>
>Bob, what is the current rating on the Std density D sub pins? This
>is re: your avionics ground bus and the 18 gauge com wires going
>into it. I have the oversize pins that accept 18 awg, but I'm
>thinking the ~8 amps intermittent load needs to be divided over two pins.
>Thanks
>Tim
Splitting it onto 2 pins with 6", 22AWG
ballast pigtails is never wrong . . .
but the super-pin might be okay.
What accessory are you talking about?
Bob . . .
Message 3
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Subject: | Lamar Super-Switch solid state contactor |
At 11:15 AM 3/22/2014, you wrote:
>Bob,
>I have been told you have a solid state master relay that will not
>get hot like my one amp current relay. Could you please tell me the
>part number for the relay. Your book has been a real inspiration.
Thank you.
Lamar used to manufacture one, Aircraft Spruce
used to sell them. I don't find them
on either website. I think the product
has been pulled. At one time the factory
had me on a 'list ' to receive an engineering
sample for evaluation . . . but I've never
seen one in the 'flesh' . . .
What's your application? What are your design
goals? Is it just the heat that bothers you?
Yes, they are hot to touch but that does not
automatically translate into an evil property.
The light bulb gets hot too but delivers the
advertised performance.
Bob . . .
Message 4
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Subject: | Re: Std density D sub pins. |
This is for a- GTN 650 GPS/NAV/COMM. All the grounds out of that box.=0AT
im=0A=0A=0A=0A=0A________________________________=0A From: "Robert L. Nucko
lls, III" <nuckolls.bob@aeroelectric.com>=0ATo: aeroelectric-list@matronics
.com =0ASent: Saturday, March 22, 2014 9:38 AM=0ASubject: Re: AeroElectric-
List: Std density D sub pins.=0A =0A=0A--> AeroElectric-List message posted
by: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>=0A=0AAt 09:1
Andres <tim2542@sbcglobal.net>=0A> =0A> Bob, what is the current rating on
the Std density D sub pins? This is re: your avionics ground bus and the 1
8 gauge com wires going into it. I have the oversize pins that accept 18 aw
g, but I'm thinking the ~8 amps intermittent load needs to be divided over
two pins.=0A> Thanks=0A> Tim=0A=0A=0A- Splitting it onto 2 pins with 6",
22AWG=0A- ballast pigtails is never wrong . . .=0A- but the super-pin m
ight be okay.=0A=0A- What accessory are you talking about?=0A=0A=0A- Bo
======================
Message 5
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Subject: | Re: Std density D sub pins. |
Hi Guys,
Good question Tim <<what is the current rating on the Std density D sub
pins? >> I'm looking at something similar right now
Bob; I'm not sure I understand correctly what << with 6", 22AWG
ballast pigtails >> means? Can you clarify?
regards,
Bill Allen
On 22 March 2014 17:31, Tim Andres <tim2542@sbcglobal.net> wrote:
> This is for a GTN 650 GPS/NAV/COMM. All the grounds out of that box.
> Tim
>
>
> ------------------------------
> *From:* "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
> *To:* aeroelectric-list@matronics.com
> *Sent:* Saturday, March 22, 2014 9:38 AM
> *Subject:* Re: AeroElectric-List: Std density D sub pins.
>
> nuckolls.bob@aeroelectric.com>
>
> At 09:10 AM 3/22/2014, you wrote:
> tim2542@sbcglobal.net>
> >
> > Bob, what is the current rating on the Std density D sub pins? This is
> re: your avionics ground bus and the 18 gauge com wires going into it. I
> have the oversize pins that accept 18 awg, but I'm thinking the ~8 amps
> intermittent load needs to be divided over two pins.
> > Thanks
> > Tim
>
>
> Splitting it onto 2 pins with 6", 22AWG
> ballast pigtails is never wrong . . .
> but the super-pin might be okay.
>
> What accessory are you talking about?
>
>
> Bob . . . -Mat==============
>
>
> *
>
>
> *
>
>
Message 6
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Subject: | Re: Std density D sub pins. |
And what is a "super pin"?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=420851#420851
Message 7
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Subject: | Re: Std density D sub pins. |
And what is a "super pin"?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=420852#420852
Message 8
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Subject: | Re: Std density D sub pins. |
At 12:31 PM 3/22/2014, you wrote:
>This is for a GTN 650 GPS/NAV/COMM. All the grounds out of that box.
>Tim
Okay, I'm seeing grounds on P1001, 1004 and 1003
that start out as multiple pins and splice down
to single conductors of 18 or 20AWG depending on
system voltage for a total of 7 wires.
Without conversation with the folks who set it
up, the rationale is not known to us. I've seen
this 'pin doubling' on a variety of radios over
the past 20 years.
One thing you could do is run individual 20AWG
wires from ALL 7 pins on the radio to independent
pins in the ground bus. This would cover a host
of rationals from quest for low impedance groung
path (shaky), redundancy (a little less shaky)
or load sharing in the pins (which is my best
guess).
I sold this philosophy onto the GQM163 super
sonic sea skimmer about 10 years ago.
http://tinyurl.com/7h9h76r
I think if it were my airplane, I'd go with
7 separate wires in bundle to the ground bus.
Bob . . .
Message 9
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Subject: | Re: Std density D sub pins. |
At 02:17 PM 3/22/2014, you wrote:
>
>And what is a "super pin"?
Somebody, I think Garmin, spec'd a special
pin for d-sub connectors that would accept
larger than 20AWG wire. This is extra long
such that the crimp happens outside the connector
housing.
I'm mystified by this product . . . in no way
does it improve on the current rating of the
individual pin, only the ability to attach
wires rated for a lot more current than the
pin . . . wouldn't use one myself.
Bob . . .
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