: [neonixie-l] Re: Homemade Nixie tubes project: Help with vacuum
technology needed
here is one cheep
http://www.harborfreight.com/a-c-manifold-gauge-set-92649.html
mike
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On 12-01-17 11:15 PM, mike wrote:
here is one cheep
http://www.harborfreight.com/a-c-manifold-gauge-set-92649.html
There are vacuum gauges and then there are VACUUM GAUGES.
Those are for Auto Air conditioning where they want to get 99% of the
air out. To make a Nixie, I think you have to
Hi John,
thanks for your links, they all look interesting.
Another idea for the inductive heater: There are so many inductive hot
plates around that work exactly this way. Couldn't I use one of these?
Jens
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On Jan 16, 2:57 pm, John Rehwinkel jreh...@mac.com wrote:
I think I will have to try with my equipment for now - the big investment I
will do is a decent burner, but I cannot afford purchasing a top-notch pump
and so on.
Yeah, I'm looking for a crossfire and hand torch myself. As the
Hey Jens-
The 'bakeout' cycle of processing any glass vacuum device is
critical for long life-
Every surface, and every material in the bulb has a film of water
vapour on it, as well as anything else you left there with your
fingers.
The water has terrible effects on any filament, and even
here is one cheep
http://www.harborfreight.com/a-c-manifold-gauge-set-92649.html
mike
On Jan 14, 6:30 am, jb-electronics webmas...@jb-electronics.de
wrote:
Hi,
Vacuum gauges are made by Varian. There's a panel meter and a little
metal gizmo with an octal base like an old vacuum tube.
Sorry to hijack a little, I was reading this very interesting thread
and found something of interest to me.
I like the induction heater, the simple design with 2 mosfets, I've
been looking for a simple design like this for a while, my mrs makes
jewellery and has been mithering for a ridiculously
Howdy Jens-
If you've got any kind of spark coil, you don't need a vacuum
gauge. The color of the discharge in the gas remaining in the tube
will tell you the vacuum.
You'll really need a 2-stage pump to attain enough vacuum (i've been
using an old Welch for 15 years)..
Once the pump has
Hey Dylan,
cool video, many thanks.
If you've got any kind of spark coil, you don't need a vacuum
gauge. The color of the discharge in the gas remaining in the tube
will tell you the vacuum.
Sounds nice! But I think I like the absolute measuring better because
this way I can measure
But I reckon for light bulbs you need a much better vacuum than for Nixie
tubes, right?
Not really. Many light bulbs contain various gases (nitrogen, argon, xenon,
bromium, iodine, etc.) and work just fine. Most gases won't harm a light bulb,
even if there's some residual oxygen, it'll
Hi John,
I think I will have to try with my equipment for now - the big
investment I will do is a decent burner, but I cannot afford purchasing
a top-notch pump and so on.
The heaters from Neon John are quite beyond my budget, sadly, but I
guess this is really something that could help me a
It couldn't barium getter if you want use mercury. Barium getter exchange
another gases to mercury vapour:/.
It's recommended shining tubes to pump system. RF heating is good, but
sometimes the better is shining.
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A manometer works great but to read that high of a vacuum but you will
need a mercury filled instrument...perhaps it is hard to find these
days...when I worked in an instrument lab a guy blew all the mercury
out of one...what a mess!hazmat crew had to fix it. There are
nice digital vacuum
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