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Bob McC
Joined: 09 Jan 2006
Posts: 258
Location: Toronto, ON
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 Posted: Wed Mar 02, 2011 6:07 am Post subject: Toggle switch keyway convention: up vs. down |
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One final thought on the keyway issue.
Everyone is referencing the keyway to "on" and "off", but what you supposedly are referring to is contacts "open" or "closed". Now when you use a simple SPST switch for your mags, then contacts "closed" is actually "off" and contacts "open" is actually "on". That sort of throws all theory about keyway "on" or "off" out the window. So the correct conclusion would be that you would normally want whatever device you are controlling to be "on" with toggle up and "off" with toggle down and the keyway must be positioned to achieve this regardless of which way the keyway must be to do this. The important consideration is the state of the device with reference to toggle position and the keyway position's only relevance is to achieve this desired end result, not whether it is "up" or "down".
Bob McC
> Subject: Re: Toggle switch keyway convention: up vs. down
[quote] From: mmayfield(at)ozemail.com.au
Date: Wed, 2 Mar 2011 04:19:57 -0800
To: aeroelectric-list(at)matronics.com
--> AeroElectric-List message posted by: "mmayfield" <mmayfield(at)ozemail.com.au>
roee wrote:
> This appears to be a duplicate thread, the above posting being a response to this original thread: http://forums.matronics.com/viewtopic.php?t=79809
>
> The message above has been re-posted to the original thread, and additional subsequent messages have been posted there.
Yeah. Unfortunately the structure of Matronics Email Lists does that frequently. It's the price you pay for having a jack-of-all-trades email list. It bugs the living hell out of me because it often makes it hard to follow a thread chronologically through all the responses.
--------
Mike
Sydney, Australia
Pitts Model 12 under construction.
"Get your facts first, and then you can distort them as much as you please." Mark Twain. Writer.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=332463#332463
>
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_________________
Bob McC
Falco #908
(just starting) |
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JLuckey(at)pacbell.net
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| Posted: Wed Mar 02, 2011 8:05 am Post subject: Toggle switch keyway convention: up vs. down |
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Or just buy DT (Double Throw) switches and make the necessary adjustments at wiring time.
Goes back to that “minimize unique parts count” idea.
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Bob McCallum
Sent: Wednesday, March 02, 2011 05:56
To: aeroelectric-list(at)matronics.com
Subject: RE: AeroElectric-List: Re: Toggle switch keyway convention: up vs. down
One final thought on the keyway issue.
Everyone is referencing the keyway to "on" and "off", but what you supposedly are referring to is contacts "open" or "closed". Now when you use a simple SPST switch for your mags, then contacts "closed" is actually "off" and contacts "open" is actually "on". That sort of throws all theory about keyway "on" or "off" out the window. So the correct conclusion would be that you would normally want whatever device you are controlling to be "on" with toggle up and "off" with toggle down and the keyway must be positioned to achieve this regardless of which way the keyway must be to do this. The important consideration is the state of the device with reference to toggle position and the keyway position's only relevance is to achieve this desired end result, not whether it is "up" or "down".
Bob McC
> Subject: Re: Toggle switch keyway convention: up vs. down
> From: mmayfield(at)ozemail.com.au
> Date: Wed, 2 Mar 2011 04:19:57 -0800
> To: aeroelectric-list(at)matronics.com
>
> --> AeroElectric-List message posted by: "mmayfield" <mmayfield(at)ozemail.com.au>
>
>
> roee wrote:
> > This appears to be a duplicate thread, the above posting being a response to this original thread: http://forums.matronics.com/viewtopic.php?t=79809
> >
> > The message above has been re-posted to the original thread, and additional subsequent messages have been posted there.
>
> Yeah. Unfortunately the structure of Matronics Email Lists does that frequently. It's the price you pay for having a jack-of-all-trades email list. It bugs the living hell out of me because it often makes it hard to follow a thread chronologically through all the responses.
>
> --------
> Mike
>
> Sydney, Australia
>
> Pitts Model 12 under construction.
>
> "Get your facts first, and then you can distort them as much as you please." Mark Twain. Writer.
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=332463#332463
>
>
>
> <B
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