DuMont 6292 PMT voltage divider

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Arni Roglic
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DuMont 6292 PMT voltage divider

Post by Arni Roglic » Thu Apr 11, 2013 4:56 pm

Can you help me on DuMont 6292 PMT voltage divider
or scheme how to connect resistors.
I do not know the values ​​of resistors.
http://www.hofstragroup.com/product/fai ... be-2-s-11/
thanks

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Richard Hull
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Re: DuMont 6292 PMT voltage divider

Post by Richard Hull » Thu Apr 11, 2013 9:11 pm

Dumont's been out of business since forever............ I have a couple of these tubes from the $1.00 box at hamfests.

Use the "similar to" tube references in your supplied URL.... look them up and get their data sheets for dynode wiring. 100k-470k is a safe and often used dynode resistor value range. bypassing the last 3 stages resistors with .01-.001 caps is also a standard practice.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

Arni Roglic
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Re: DuMont 6292 PMT voltage divider

Post by Arni Roglic » Mon Apr 15, 2013 6:07 pm

I found this scheme. But there is no capacitor between the cathode and anode, even at the last dynodes
Will this work?
Attachments
DuMont 6292.JPG
DuMont 6292.JPG (14.35 KiB) Viewed 2351 times

richnormand
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Re: DuMont 6292 PMT voltage divider

Post by richnormand » Mon Apr 15, 2013 10:08 pm

Hi Arni,

sorry for the slight delay as I had to do a bit of digging for this!

The pdf has the DuMont scanned short form spec sheet from the era.
Note that is has 39 tubes including your 6292.
The K type were experimental and subject to change.

At the end I included a dynode chain for the 6364 that I have used. It works well. Note that your 6292 uses the same base, has the same number of stages, has the same max voltage and the same current gain. The photocathode diag and material are different but I would guess the PMT neck amplifying section electrical and mechanicals are identical, so this should work for you.

have fun.....

Edit: both attempt to post the pdf failed. i contacted the moderator about a possible size limit.
Now posted in the "files" section.

richnormand
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Re: DuMont 6292 PMT voltage divider

Post by richnormand » Mon Apr 15, 2013 10:12 pm

Thanks for the help Carl.
Now posted in the "files" section.

Arni Roglic
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Re: DuMont 6292 PMT voltage divider

Post by Arni Roglic » Mon Apr 15, 2013 10:32 pm

Thanks for the help
and here is a scheme for the negative power supply
if someone needs
Attachments
dvfv.JPG
dvfv.JPG (23.36 KiB) Viewed 2351 times
DuMont 6292 voltage divider.JPG
DuMont 6292 voltage divider.JPG (38.35 KiB) Viewed 2351 times

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