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Author Topic: Vertical ohms on 25" tubes?  (Read 1383 times)

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menace

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Vertical ohms on 25" tubes?
« on: August 02, 2004, 11:14:17 am »
I was thinking of doing an 8-liners chassis on a hitachi tube I picked up from my dad but I thought I would see if there are any regular arcade chassis' that are also of high impedance on the vertical windings?  

I know the wells gardener k7191 is low (10.4 or so)so its out, so does anyone know if any other chassis' would take a tube with 54 ohms?  I'm not currently building a game, just screwing around with these things so i want to keep the costs down....
its better to not post and be thought a fool, then to whip out your keyboard and remove all doubt...

Ken Layton

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Re:Vertical ohms on 25" tubes?
« Reply #1 on: August 02, 2004, 11:18:19 am »
Generally the 25" and larger tubes are low impedance.

MonitorGuru

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Re:Vertical ohms on 25" tubes?
« Reply #2 on: August 02, 2004, 04:04:54 pm »
Concur with Ken----All the 25"+ tubes I've seen are low impedence.

Jomac

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Re:Vertical ohms on 25" tubes?
« Reply #3 on: August 03, 2004, 04:56:40 am »
The RCA tubes used in the WG 4900 & 5500 series have a 28ohm vertical , Also all the Nanao MS8 series 25" tubes have a 36.5 ohm vertical.
All the Kortex 25" (Zenith Brand ) CRT's have a 32.5 vertical , and 25" Sanwa (Mitsubishi CRT ) have a 40ohm vert

You will be safe to use any Mitsubishi / sega 25" CRT .

The most universal  s/hand chassis for a Yoke with 54ohms vert would be an nanao Ms8-26A etc
Also most of the Kortek / Sharp image 25" chassis will happily drive on of those CRT's .

menace

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Re:Vertical ohms on 25" tubes?
« Reply #4 on: August 03, 2004, 06:48:41 am »
wow thanks jomac--you may have given this old console tv new life--I'll post back with results (if I ever have any) Now to track down a 25" kortek chassis..they are likely stored just east of the hen's teeth exhibit.... ;D
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Jomac

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Re:Vertical ohms on 25" tubes?
« Reply #5 on: August 03, 2004, 10:31:43 pm »
I have heaps of S/hand Kortek Chassis if you need one , even a couple of new ones , email me if i can help some more .