Today's Message Index:
----------------------
1. 09:24 AM - Re: Is there a switch configuration that will do this? (Robert L. Nuckolls, III)
2. 11:49 AM - Re: Is there a switch configuration that will do this? (David Carter)
3. 05:00 PM - Re: Is there a switch configuration that will do this? (user9253)
4. 05:29 PM - Re: Is there a switch configuration that will do this? (Robert L. Nuckolls, III)
5. 05:33 PM - Re: Re: Is there a switch configuration that will do this? (Robert L. Nuckolls, III)
Message 1
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| Subject: | Re: Is there a switch configuration that will do |
this?
> This switch with addition of two
> diodes and the resistor cited above can be configured
> to accomplish the switching functions you requested.
> See attached:
P.S. those 'loose' components present a small
packaging problem. I think I'd fabricate an
assembly-under-heat-shrink of the three compoents
with wires coming out each end.
Use 1/2" dual wall heat shrink . . . that's
how I packaged a few hundred crowbar ov management
modules.
Your finished assembly will be about 1-1/2 inches
long and 3/8" in diameter. It would tie nicely
into an adjacent wire bundle. I've got all the
materials in stock. I could build one up for you.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
Message 2
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| Subject: | Re: Is there a switch configuration that will do this? |
P.S. those 'loose' components present a small
packaging problem. I think I'd fabricate an
assembly-under-heat-shrink of the three compoents
with wires coming out each end.
Use 1/2" dual wall heat shrink . . . that's
how I packaged a few hundred crowbar ov management
modules.
Your finished assembly will be about 1-1/2 inches
long and 3/8" in diameter. It would tie nicely
into an adjacent wire bundle. I've got all the
materials in stock. I could build one up for you.
Bob - thanks for the solution design & for the packaging tip. I was also
wondering how much heat the resistor would need to dissipate in this
application? I'm guessing not much?
---
David Carter
david@carter.net
On Mon, Jun 21, 2021 at 12:26 PM Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> This switch with addition of two
> diodes and the resistor cited above can be configured
> to accomplish the switching functions you requested.
> See attached:
>
>
> P.S. those 'loose' components present a small
> packaging problem. I think I'd fabricate an
> assembly-under-heat-shrink of the three compoents
> with wires coming out each end.
>
> Use 1/2" dual wall heat shrink . . . that's
> how I packaged a few hundred crowbar ov management
> modules.
>
> Your finished assembly will be about 1-1/2 inches
> long and 3/8" in diameter. It would tie nicely
> into an adjacent wire bundle. I've got all the
> materials in stock. I could build one up for you.
>
> Bob . . .
>
> Un impeachable logic: George Carlin asked, "If black boxes
> survive crashes, why don't they make the whole airplane
> out of that stuff?"
>
Message 3
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| Subject: | Re: Is there a switch configuration that will do this? |
Will this work?
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=502520#502520
Attachments:
http://forums.matronics.com//files/taxi_lndg_lt_sw_107.jpg
Message 4
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| Subject: | Re: Is there a switch configuration that will do |
this?
>Bob - thanks for the solution design & for the
>packaging tip. I was also wondering how much
>heat the resistor would need to dissipate in
>this application? I'm guessing not much?=C2
W = E^2/R = 14^2/270 = 0.725 Watts
For the 'shrink potted' assembly I would
probably use two 130 Ohm resistors
in series to spread out the heat generation
at 0.360 Watts each.
It will warm up noticeably but only slightly
so.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
Message 5
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| Subject: | Re: Is there a switch configuration that will |
do this?
At 06:59 PM 6/21/2021, you wrote:
>
>Will this work?
>
>--------
>Joe Gores
>
>http://forums.matronics.com//files/taxi_lndg_lt_sw_107.jpg
>
Yes . . . that's the single pole switch version
of that which I illustrated on 6/19 using a 2-pole,
3-position, on-on-on switch.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
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