Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

Equipment Discussions >> Mounts

Pages: 1
Make-it Better
super member


Reged: 06/30/07

CGE power connection
      #4396003 - 02/18/11 10:11 PM

Does anyone know for certain if the CGE power connection is "center positive" or "center negative"?

Thanks in advance,
Roy


Post Extras: Print Post   Remind Me!   Notify Moderator  
mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: CGE power connection new [Re: Make-it Better]
      #4396004 - 02/18/11 10:13 PM

Absolutely center positive, and the dimensions are 2.1 x 5.5mm

Post Extras: Print Post   Remind Me!   Notify Moderator  
Make-it Better
super member


Reged: 06/30/07

Re: CGE power connection new [Re: mclewis1]
      #4396006 - 02/18/11 10:15 PM

Thank you very much Mark.

Roy


Post Extras: Print Post   Remind Me!   Notify Moderator  
SkipW
sage


Reged: 02/03/11

Loc: Oklahoma, USA
Re: CGE power connection new [Re: mclewis1]
      #4422697 - 03/02/11 11:20 PM

Thank you for the exact info, Mark. I presumed that the same connector was also used to power the Celestron CG-5 Advanced series mount, and it is.

I looked for that size connector on the Radio Shack website and saw it's an enercell size 'M' Adaptaplug Tip (273-344). With their Car Power Adapter (270-048) it works a treat on the CG-5. With your exact dimensions, I knew precisely what to look for.

I couldn't get the stock DC power cable to work at all with a 7 Ah 12V power pack I picked up from Walmart. Naturally, I thought it was a problem with that cheap power pack, but the included cable didn't work with my (not cheap) car power outlet, either. The CG-5 worked perfectly with a Celestron AC adapter, so I knew it wasn't a problem with the mount itself. Replacing the Celestron 12V cord with the combo from RS, the CG-5 works well.

After successfully trying the replacement DC adapter, I measured the resistance of the supplied adapter... 6 Ohms on the positive lead and 5 Ohms on the negative! Yikes! No wonder it didn't work! The new RS plug cord and tip measures much less than one Ohm on each side.

I just noticed that the Adapter packaging has a sticker on it that says that one Adaptaplug Tip is included in the $12.99 price... neither I nor the clerk noticed this in the store. Now to see if I can get my $6.99 retail for the 'M' Tip back.

[Edit] They cheerfully refunded the $6.99 plus tax today.

Edited by SkipW (03/04/11 12:09 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
Arbacia
Pooh-Bah
*****

Reged: 04/18/07

Loc: Madrid, Spain
Re: CGE power connection new [Re: SkipW]
      #4423343 - 03/03/11 09:26 AM

Center +

If inverted, simply doesn't work. No damage as it is protected.

Check the volts of the power suply. Some 12v power suply are not 12v output but 15-16v for charging 12v batteries.


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1


Extra information
19 registered and 46 anonymous users are browsing this forum.

Moderator:  Dave M, richard7, bilgebay 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 733

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics