How to repair an ENIAC???

First you invent a re-animator then you find out where Eckert and Mauchly are buried.

sure you did ...

--
The e-mail address in our reply-to line is reversed in an attempt to
minimize spam.  Our true address is of the form che...@prodigy.net.

I have a tube from the ENIAC. :)

--- sam | Sci.Electronics.Repair FAQ:

Repair | Main Table of Contents:

+Lasers | Sam's Laser FAQ: | Mirror Sites:

Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs.

On Wed, 30 Jan 2008 21:35:21 -0800 (PST), Carl Dau put finger to keyboard and composed:

Give these guys a call:

Try the Cipher Challenge:

- Franc Zabkar

--
Please remove one 'i' from my address when replying by email.

I've got a 56 bit (sorry, not byte) core store if you need a memory upgrade.

-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on

A 12AX7?

It's a shame, but I lost a two-tube circuit board I once had from a 50's computer - a Bendix I think - with two 6146 beam power tubes, part of the drum memory head driver circuitry. Maybe two in parallel to feed a head? [shades of Gracie Slick...]

What a concept.

-- George Cornelius cornelius ( A T ) eisner.decus.org

More likely a 12AV7 or maybe a 12AZ7.

?

A "pointed little head"? ;)

None of the above; baseless miniature tubes like those didn't show up until quite a while after the ENIAC was developed.

Most likely it would be a 6SN7, though other octal-based tubes of similar vintage were used too.

Isaac

Probably. It's definitely octal. No idea if it's original though.

--- sam | Sci.Electronics.Repair FAQ:

Repair | Main Table of Contents:

+Lasers | Sam's Laser FAQ: | Mirror Sites:

Important: Anything sent to the email address in the message header above is ignored unless my full name AND either lasers or electronics is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs.

It was he industrial version, the 5962.

--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.