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24v aux power port?

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donjohnston

Joined: 13 Dec 2009
Posts: 231

Posted: Thu Mar 06, 2014 7:07 pm Post subject: 24v aux power port?

I've been looking for an auxiliary power port (courtesy port). All the ones I see are advertised for use in 12v electrical systems. But I'm 24v.  



For example:



http://www.amazon.com/Accessory-Outlet-Lighter-Marine-Motorcycle/dp/B005GSFK6U



But these are passive devices, right? As long as I keep the current within the correct values, shouldn't it work with no problems?



-Don

rickofudall

Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA

Posted: Thu Mar 06, 2014 8:01 pm Post subject: 24v aux power port?

It's just a couple of contacts. As long as you keep the amps from melting them, why would voltage matter?



Rick Girard

do not archive



 On Thu, Mar 6, 2014 at 9:07 PM, donjohnston <don(at)velocity-xl.com (don(at)velocity-xl.com)> wrote:

 	  Quote: 	
		   --> AeroElectric-List message posted by: "donjohnston" <don(at)velocity-xl.com (don(at)velocity-xl.com)>

 

 I've been looking for an auxiliary power port (courtesy port). All the ones I see are advertised for use in 12v electrical systems. But I'm 24v.

 

 For example:

 

 http://www.amazon.com/Accessory-Outlet-Lighter-Marine-Motorcycle/dp/B005GSFK6U

 

 But these are passive devices, right? As long as I keep the current within the correct values, shouldn't it work with no problems?

 

 -Don

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=419895#419895

 

 

 

 

 

 

 

 ===========

 -List" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List

 ===========

 http://forums.matronics.com

 ===========

 le, List Admin.

 ="_blank">http://www.matronics.com/contribution

 ===========

 

 

 

 	




-- 

Zulu Delta

Mk IIIC

Thanks, Homer GBYM

It isn't necessary to have relatives in Kansas City in order to be unhappy.

   - Groucho Marx

 

  [quote][b]

_________________
The smallest miracle right in front of you is enough to make you happy....

ceengland7(at)gmail.com
Guest

Posted: Thu Mar 06, 2014 8:27 pm Post subject: 24v aux power port?

Risk of a passenger trying to power a 12 V device on the 24 V supply?



Sent from my iPhone



[quote] On Mar 6, 2014, at 10:00 PM, Richard Girard <aslsa.rng(at)gmail.com> wrote:

 

 It's just a couple of contacts. As long as you keep the amps from melting them, why would voltage matter?

 

 Rick Girard

 do not archive

 

 

> On Thu, Mar 6, 2014 at 9:07 PM, donjohnston <don(at)velocity-xl.com> wrote:

> 

> 

> I've been looking for an auxiliary power port (courtesy port). All the ones I see are advertised for use in 12v electrical systems. But I'm 24v.

> 

> For example:

> 

> http://www.amazon.com/Accessory-Outlet-Lighter-Marine-Motorcycle/dp/B005GSFK6U

> 

> But these are passive devices, right? As long as I keep the current within the correct values, shouldn't it work with no problems?

> 

> -Don

> 

> 

> 

> 

> Read this topic online here:

> 

> http://forums.matronics.com/viewtopic.php?p=419895#419895

> 

> 

> 

> 

> 

> 

> 

> ===========

> -List" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List

> ===========

> http://forums.matronics.com

> ===========

> le, List Admin.

> ="_blank">http://www.matronics.com/contribution

> ===========

 

 

 

 -- 

 Zulu Delta

 Mk IIIC

 Thanks, Homer GBYM

 

 It isn't necessary to have relatives in Kansas City in order to be unhappy

loboflyer(at)gmail.com
Guest

Posted: Thu Mar 06, 2014 8:34 pm Post subject: 24v aux power port?

Using a lighter socket on a 24V system is possible, but invites disaster.  I did a quick survey around the house and while most of the lighter socket plugs I found work with 24Vdc, it would be my luck that I'd find one that didn't, the hard way (for example, my ham radio HT which takes 16.8V max).  Have you considered using a 24-12V DC-DC converter wired up behind the socket, or do you need 24V for accessories? 



  -Jeff-



On Thu, Mar 6, 2014 at 8:07 PM, donjohnston <don(at)velocity-xl.com (don(at)velocity-xl.com)> wrote:

 [quote]--> AeroElectric-List message posted by: "donjohnston" <don(at)velocity-xl.com (don(at)velocity-xl.com)>

  

 I've been looking for an auxiliary power port (courtesy port). All the ones I see are advertised for use in 12v electrical systems. But I'm 24v.

 

 For example:

 

 http://www.amazon.com/Accessory-Outlet-Lighter-Marine-Motorcycle/dp/B005GSFK6U

 

 But these are passive devices, right? As long as I keep the current within the correct values, shouldn't it work with no problems?

 

 -Don

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=419895#419895

 

 

 

 

 

 

 

 ===========

 -List" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List

 ===========

 http://forums.matronics.com

 ===========

 le, List Admin.

 ="_blank">http://www.matronics.com/contribution

 ===========

 

 

 

 [b]

donjohnston

Joined: 13 Dec 2009
Posts: 231

Posted: Fri Mar 07, 2014 4:21 am Post subject: Re: 24v aux power port?

The Cessna I've had for 15 years has a 24v power jack and I've never had a problem with passengers connecting anything to it. Partly because I don't let my passengers connect things to my airplane without asking first (and if they didn't ask, they deserve what they get).      And secondly, it's already in use.



So can someone second that there is no difference in the construction of one of these 12v connectors?

user9253

Joined: 28 Mar 2008
Posts: 1908
Location: Riley TWP Michigan

Posted: Fri Mar 07, 2014 4:22 am Post subject: Re: 24v aux power port?

How about installing two DC power outlets, one for 24 volts and one for 12 volts?  One like this can be used for 24 volts without the danger of a 12 volt device being plugged into it. http://www.mouser.com/ProductDetail/Switchcraft/712A/?qs=sGAEpiMZZMv1TUPJeFpwbvDLoO7VplWmGzPCelncVas%3d

A DC to DC converter can supply 12 volts to the other cigarette lighter type outlet.  http://www.ebay.com/itm/24V-Step-Down-to-12V-DC-DC-Converter-Regulator-20A-240W-Converter-USA-Shipping-/121289155547?pt=LH_DefaultDomain_0&hash=item1c3d65a3db

Joe

_________________
Joe Gores

rickofudall

Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA

Posted: Fri Mar 07, 2014 6:30 am Post subject: 24v aux power port?

Label it clearly, make sure it's isolated from any other circuit, and control what your passengers bring into the aircraft.



Rick

do not archive



 



On Thu, Mar 6, 2014 at 10:26 PM, Charlie E <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:

 	  Quote: 	
		   Risk of a passenger trying to power a 12 V device on the 24 V supply?



Sent from my iPhone



On Mar 6, 2014, at 10:00 PM, Richard Girard <aslsa.rng(at)gmail.com (aslsa.rng(at)gmail.com)> wrote:

 



 	  Quote: 	
		  It's just a couple of contacts. As long as you keep the amps from melting them, why would voltage matter?



Rick Girard

do not archive

 

 On Thu, Mar 6, 2014 at 9:07 PM, donjohnston <don(at)velocity-xl.com (don(at)velocity-xl.com)> wrote:

 	  Quote: 	
		    --> AeroElectric-List message posted by: "donjohnston" <don(at)velocity-xl.com (don(at)velocity-xl.com)>

 

 I've been looking for an auxiliary power port (courtesy port). All the ones I see are advertised for use in 12v electrical systems. But I'm 24v.

 

 For example:

 

 http://www.amazon.com/Accessory-Outlet-Lighter-Marine-Motorcycle/dp/B005GSFK6U

 

 But these are passive devices, right? As long as I keep the current within the correct values, shouldn't it work with no problems?

 

 -Don

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=419895#419895

 

 

 

 

 

 

 

 ===========

 -List" target="_blank">http://www.matronics.com/Navigator?AeroElectric-List

 ===========

 http://forums.matronics.com

 ===========

 le, List Admin.

 ="_blank">http://www.matronics.com/contribution

 ===========

 

 

 

 	




-- 

Zulu Delta

Mk IIIC

Thanks, Homer GBYM

It isn't necessary to have relatives in Kansas City in order to be unhappy.

    - Groucho Marx

 

   	  Quote: 	
		  

	






3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

 	  Quote: 	
		  

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
	


3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D



	


	




-- 

Zulu Delta

Mk IIIC

Thanks, Homer GBYM

It isn't necessary to have relatives in Kansas City in order to be unhappy.

   - Groucho Marx

 

  [quote][b]

_________________
The smallest miracle right in front of you is enough to make you happy....

donjohnston

Joined: 13 Dec 2009
Posts: 231

Posted: Fri Mar 07, 2014 8:46 am Post subject: Re: 24v aux power port?

 	  user9253 wrote: 	
		  How about installing two DC power outlets, one for 24 volts and one for 12 volts?  One like this can be used for 24 volts without the danger of a 12 volt device being plugged into it. http://www.mouser.com/ProductDetail/Switchcraft/712A/?qs=sGAEpiMZZMv1TUPJeFpwbvDLoO7VplWmGzPCelncVas%3d

	


Kind of hard to plug my Garmin 396 into that.

loboflyer(at)gmail.com
Guest

Posted: Fri Mar 07, 2014 4:39 pm Post subject: 24v aux power port?

To answer your original question, the lighter jack you mentioned should work with 24V.  Typically voltage ratings are either (1) for safety reasons, where it is easy to stick a finger in and get a shock, or (2) for dielectric withstanding/arcing.  12 to 24V isn't enough to trigger either restriction.  While alternatives have been suggested, fuse it properly and you'll be fine. 

  -Jeff-

On Fri, Mar 7, 2014 at 9:46 AM, donjohnston <don(at)velocity-xl.com (don(at)velocity-xl.com)> wrote:

 [quote]--> AeroElectric-List message posted by: "donjohnston" <don(at)velocity-xl.com (don(at)velocity-xl.com)>

user9253 wrote:

 > How about installing two DC power outlets, one for 24 volts and one for 12 volts?  One like this can be used for 24 volts without the danger of a 12 volt device being plugged into it. http://www.mouser.com/ProductDetail/Switchcraft/712A/?qs=sGAEpiMZZMv1TUPJeFpwbvDLoO7VplWmGzPCelncVas%3d

  >

 Kind of hard to plug my Garmin 396 into that.

 Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=419922#419922

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 http://forums.matronics.com

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 le, List Admin.

 ="_blank">http://www.matronics.com/contribution

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[b]

donjohnston

Joined: 13 Dec 2009
Posts: 231

Posted: Fri Mar 07, 2014 4:46 pm Post subject: Re: 24v aux power port?

Thank you!

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