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4hv.org :: Forums :: General Science and Electronics
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Identifieng CRT pins?

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dmg
Thu Feb 18 2010, 03:44AM Print
dmg Registered Member #2628 Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627
I got this cathode ray tube from my physics teacher today, It is USA navy surplus, I tried to ask him for a pin layout, he said that he didn't have one, and I couldn't find any datasheet on the internet, does anyone have this tube?
if so, what are the pin connections,

the number is JAN CRC-902-P1 (either a 1 or an I)

here is some pictures...
1266464655 2628 FT0 Vac

1266464655 2628 FT0 Vac3

1266464655 2628 FT0 Vac2
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Myke
Thu Feb 18 2010, 04:38AM
Myke Registered Member #540 Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
You should be able to identify the heater pins fairly easily with a multimeter. If you can trace the pins from the internal structure down into the base where the pins connect, it shouldn't be too difficult to find the pinout of the CRT if you have a reference CRT with a pinout to see what the internal structures look like.

EDIT: Here's a link to the pinout. Link2
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dmg
Thu Feb 18 2010, 06:09AM
dmg Registered Member #2628 Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627
thank a bunch myke, its much appritiated.

I couldn't find that anywere.
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radiotech
Thu Feb 18 2010, 07:47AM
radiotech Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
ref; Radio Amateurs Handbook 41 ed 1964.

Enjoy! By the way, why aren't you a ham ?
1266479139 2463 FT84353 Scan0015
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Proud Mary
Thu Feb 18 2010, 05:08PM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
There you go. In searches, it often helps to drop US military prefixes i.e. JAN, CRC etc.

I understand that in this case, the suffix refers to the phosphor emission colour, which you'll find out when you power it up.


1266512894 543 FT84353 Crt 902
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dmg
Thu Feb 18 2010, 11:13PM
dmg Registered Member #2628 Joined: Fri Jan 15 2010, 12:23AM
Location:
Posts: 627
thanks for all your help, I fired up the tube today, it glows green.
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