Re: [neonixie-l] Re: Soldering the wire leads on a IN-14

Mon, 05 Sep 2011 14:31:22 -0700

Suggestion!! If you can carefully break out the remaining glass that surrounds the pins, then you will have no problem removing the pins from the board, one at a time. Ira 

On 9/5/2011 1:56 PM, Tidak Ada wrote:

I have to replace a ZM1005 in a (vintage) Tekelec Airtronic DPM. The first
problem is to desolder the broken tube (14 pins in a plated throug print and
a spacer between tube and print) and thereafter how to solder the new tube
properly
Anyhow, the manufacturer did not worry to solder the tube. No flying leads,
but pins !!

eric

-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of chuck richards
Sent: maandag 5 september 2011 22:38
To: [email protected]; [email protected]
Subject: [neonixie-l] Re: Soldering the wire leads on a IN-14

One thing I have done a few times to various wire-leaded nixies, is to
solder the ends of the leads to a 14-pin DIP header plug.

That way, you end up with a way to plug the tube into a solderless
breadboard, or into an ic socket.

I did that with some nice chinese nixies.  I left the leads
full-length (about 1.5 inches).   I insulated each one
and soldered the ends to the DIP header plug.  Now those chinese tubes have
a nice socket!

Chuck









---- Original Message ----
From: [email protected]
To: [email protected]
Subject: RE: [neonixie-l] Re: Soldering the wire leads on a IN-14
Date: Mon, 5 Sep 2011 11:47:52 -0700 (PDT)


Good question.

The failure mechanism is certainly there. In thermionic valves

'dumet'

glass to metal seals are used to match the expansion coefficient of
the glass to that of the wire. I am not sure if anything similar is
used for nixies that run much cooler. Anyone knows what the wire

leads

are made of?

In any case, if in doubt you can attach a small clamp (like a croc
clip) to sink heat away from the glass-metal seal.

Alex



On Sep 5, 9:38 pm, Adam Jacobs<[email protected]>  wrote:

I've always soldered the leads of IN-14's, never gave it much

consideration.

Never had a problem. I think that the thing you want to avoid is

soldering

the nixies which need sockets. IN-8's, IN-12's, IN-18's, that kind

of thing.

The ones with flying leads are _designed_ to be soldered.

-Adam

On Mon, Sep 5, 2011 at 11:19 AM, Ryan McDonald

<[email protected]>wrote:

I've heard that soldering the leads on IN-14's can cause

premature

seal failure.  I've also heard that staying at least 5mm from

the

glass largely mitigates this problem.  Can anyone make any
recommendations concerning the soldering (or makeshift

socketing) of

IN-14's?
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