Thanks a bunch
Fred
Power Plug Question
Started by
hamdul
, Jul 23 2014 09:03 AM
7 replies to this topic
#1
hamdul
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topic starter
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In Memoriam
Posted 23 July 2014 - 09:03 AM
A zillion posts ago I saw one that gave the required size of the coaxial style plug required for the cable connecting the Jump Start Battery to the Scope. I would like to get that size?
Thanks a bunch
Fred
Thanks a bunch
Fred
#2
mclewis1
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Thread Killer
Posted 23 July 2014 - 09:58 AM
Fred, The SE scope (like all Celestron scopes) requires a 2.1mm x 5.5mm DC power plug. The 2.1mm number is the diameter of that little pin in the middle of the socket on the scope. Watch out for the 2.5mm x 5.5mm plugs (they look identical), they will usually cause intermittent problems.
The battery side is just a standard cigarette lighter style DC power plug.
If you buy a commercial cable for a battery make sure it's wired "tip positive". The center pin is the +12v side, the outside of the plug and socket is the ground or negative side.
The battery side is just a standard cigarette lighter style DC power plug.
If you buy a commercial cable for a battery make sure it's wired "tip positive". The center pin is the +12v side, the outside of the plug and socket is the ground or negative side.
#3
hamdul
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topic starter
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In Memoriam
Posted 23 July 2014 - 10:05 AM
Thanks Mark,
Wouldn't you know I have the 2.5 and you're right They do cause intermittent problems. It happened to me last night.
Fred
Wouldn't you know I have the 2.5 and you're right They do cause intermittent problems. It happened to me last night.
Fred
.
#5
barbarosa
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Skylab
Posted 23 July 2014 - 12:55 PM
Watch out for the 2.5mm x 5.5mm plugs (they look identical), they will usually cause intermittent problems.
That other brand uses 2.5mm x 5.5mm, thereby proving that neither of them has a monopoly on using and clinging to a poor design.
#6
UncleMossy
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Vostok 1
Posted 23 July 2014 - 01:47 PM
Look at the pin and you'll notice it is in two halves.
If you can get something in the crack and gently pry them apart a bit you will get a better connection.
Jim
If you can get something in the crack and gently pry them apart a bit you will get a better connection.
Jim
#7
sonny.barile
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Surveyor 1
Posted 24 July 2014 - 07:43 PM
I think all of that style plug is wired tip positive. The negative is what is exposed to the outside. I believe they do this incase you have the other end attached to power and you let the barrel hit something grounded.
They sell those real cheap at Radioshack. I believe Stan sent me a link to that a few months ago.
They sell those real cheap at Radioshack. I believe Stan sent me a link to that a few months ago.
#8
RTLR 12
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Fly Me to the Moon
Posted 24 July 2014 - 10:52 PM
Vixen has a center negative connector in that style, but it is rare.
Here is the RS cable...
http://www.radioshac...oductId=3889594
Stan
Here is the RS cable...
http://www.radioshac...oductId=3889594
Stan
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