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Power lead for Meade 2080?

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#1 Michael Morris

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Posted 06 February 2013 - 01:22 PM

Our astronomical society recently inherited an old Meade 8” SCT telescope. It looks like an early 2080 model.
http://www.telescope...meade.htm#8INCH
This model is powered via a custom 115v lead and unfortunately it didn’t come with the scope. It looks as though this is a custom power socket (see picture) and it is no longer produced by Meade. There is no 12v input for this scope, so if we can’t get hold of one of the leads we can’t use it. In fact, we can’t even test it to see if the drive works.
1 - Has anyone got a power lead for one of these scopes that we could have/buy/borrow?
2 –Does anyone know the wiring sequence for one of these plugs?

Thanks

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#2 jrcrilly

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Posted 06 February 2013 - 01:30 PM

That was a very common connector in those days. The two outside pins are AC and the center is ground. A little browsing through cable catalogs should yield one.

#3 dgreyson

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Posted 06 February 2013 - 01:36 PM

That was a very common connector in those days. The two outside pins are AC and the center is ground. A little browsing through cable catalogs should yield one.


they are very common cords, this is what one looks like:

Oval Power Cord-Cable for Celestron C8-telescope NEW

#4 The Planetman

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Posted 06 February 2013 - 02:03 PM

Place a wanted in the Swap and Sell section. You should find one fairly quickly.

#5 jrcrilly

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Posted 06 February 2013 - 02:19 PM

they are very common cords, this is what one looks like:

Oval Power Cord-Cable for Celestron C8-telescope NEW


That's it, but that's a horrific price. Should be about $5 from a normal supplier. Maybe $2 from a surplus house.

#6 dgreyson

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Posted 06 February 2013 - 03:25 PM

they are very common cords, this is what one looks like:

Oval Power Cord-Cable for Celestron C8-telescope NEW


That's it, but that's a horrific price. Should be about $5 from a normal supplier. Maybe $2 from a surplus house.


They went out of use in the 70's so new one are getting scarce. Plenty of used ones still around.

Steve carries new ones:
PH-165 / HP style oval cordset

#7 Joe Cepleur

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Posted 06 February 2013 - 08:57 PM

Oval Power Cord-Cable for Celestron C8-telescope NEW


That's the correct style of cord, but not my favorite vendor. Rocky Road Systems supplies theirs with a sharp steel clamp reinforcing the plug, with two bare screws sticking out of it. You can just see a bit of it in the picture. Great way to hurt yourself handling it in the dark. When I asked to have a different, safer plug installed if I returned the cord for exchange, they said, "Sure, for an up-charge of $10." $35 for a cord that should have been right at $25? really? There are other sources.

#8 dgreyson

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Posted 06 February 2013 - 10:27 PM

Yeah, I hate those plugs too. They are meant for floor polishers where the cord yanks the plug out of the wall a lot. Apex jr, no relationship, has them a lot cheaper new with moulded on 3 prong plugs:
8ft H/P Oval power cord PH-163- Alpha 544 type Black $8.95

Search for Hp or for Tape recorder power cords for used ones.

#9 Michael Morris

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Posted 07 February 2013 - 07:40 AM

Thanks guys, this has given me loads of leads (pun intended).

#10 Jon Isaacs

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Posted 07 February 2013 - 07:50 PM

They are meant for floor polishers where the cord yanks the plug out of the wall a lot.



I saw them on lab test equipment as the HP in the links suggest. The modern computer power cable seems to be the replacement is used with most modern test equipment.

Jon

#11 jrcrilly

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Posted 07 February 2013 - 07:58 PM

They are meant for floor polishers where the cord yanks the plug out of the wall a lot.



I saw them on lab test equipment as the HP in the links suggest. The modern computer power cable seems to be the replacement is used with most modern test equipment.

Jon


I believe he was referring to the hardware store AC plug on the other end of the cord being offered for sale. A commercial cable with molded connectors on each end (as supplied by HP and other manufacturers back in the day - it was also used with comptometers and electromechanical calculators) is preferable, and much less expensive.

#12 Geo.

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Posted 08 February 2013 - 11:17 AM

This the Belden 163 or PH-163. Belden (now Volex) manufactured these. The Belden/Volex part numbers are 17952 and 17280. It was used by Hewlett-Packard and many other manufacturers in the 1960's. It was replaced by the very common IEC C13/C14, which was used by late production Meade 2080 and 2120 models.

Hands-On-Optics stocks these. New stock, but look on the used equipment page.

#13 dgreyson

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Posted 08 February 2013 - 12:43 PM

They want $29 for them.
Hands on oval power cord

#14 Brian Risley

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Posted 08 February 2013 - 05:55 PM

IIRC there was an issue on some of the cords at one time being recalled due to the fact that they had some wires crossed. Don't know if this had anything to do with the two versions, (see this site down a little bit) as they just swapped hot/neutral but left ground in the center. It is probably good to ohm out your cables and make sure that you don't have anything crossed.
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#15 dgreyson

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Posted 08 February 2013 - 07:38 PM

IIRC there was an issue on some of the cords at one time being recalled due to the fact that they had some wires crossed. Don't know if this had anything to do with the two versions, (see this site down a little bit) as they just swapped hot/neutral but left ground in the center. It is probably good to ohm out your cables and make sure that you don't have anything crossed.
Brian


That was intentional, differing OEM's had wired their equipment differently. That's why you see two different part numbers for the oval cords, a left handed versus a right handed one. Buy one, ohm it out and swap the wires at the equipment socket for whatever cord you have if you know what your doing or get a tech to do it for you.

#16 jrcrilly

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Posted 08 February 2013 - 07:51 PM

IIRC there was an issue on some of the cords at one time being recalled due to the fact that they had some wires crossed. Don't know if this had anything to do with the two versions, (see this site down a little bit) as they just swapped hot/neutral but left ground in the center. It is probably good to ohm out your cables and make sure that you don't have anything crossed.
Brian


That was intentional, differing OEM's had wired their equipment differently. That's why you see two different part numbers for the oval cords, a left handed versus a right handed one. Buy one, ohm it out and swap the wires at the equipment socket for whatever cord you have if you know what your doing or get a tech to do it for you.


In this application, it just feeds an AC motor. There's no preference for either configuration.

#17 Brian Risley

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Posted 09 February 2013 - 08:59 AM

Yep, but I think the problem cords that got out had the neutral and ground reversed, which, depending on the wiring its connected to, could have issues.
Brian

#18 dgreyson

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Posted 09 February 2013 - 01:25 PM

Yeah those would need to be put in the trash for sure.






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