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Tungar lamp

Tungar lamp

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Sometime called a Tungar lamp this is really a rectifying valve. Originally this was designed for use in battery chargers to produce the DC charging current. The close-up image on the right is of the hot filament cathode and the carbon anode above it. I have the filament glowing yellow hot but the bulb has a fill of argon which is forming the bluer discharge to the anode and it encompasses part of the filament making it look whiter. It was manufactured by Ediswan and carried the part number 68506.

UV_Phos.jpg tes_induction.jpg Tungar.jpg laser.jpg

Light Information

Light Information

Manufacturer:Ediswan
Model Reference:68506
Lamp
Lamp Type:rectifier
Physical/Production
Factory Location:England

File information

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Filename:Tungar.jpg
Album name:tuopeek / misc
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Keywords:Miscellaneous
File Size:70 KB
Date added:Jan 23, 2016
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Date Time:2016:01:23 21:20:16
DateTime Original:2016:01:23 10:07:44
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rjluna2
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Robert


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Jan 23, 2016 at 03:46 PM Author: rjluna2
Thanks for sharing this illuminated Tungar bulb, Mark

Pretty, please no more Chinese failure.

Flurofan96
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5ft 58W


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Jan 23, 2016 at 04:02 PM Author: Flurofan96
Blimey that is one verrrrrry interesting bulb there

LED streetlights are flipping Yussless!!!! I'd may as well be in the dark!!!!!

Flaming Nora, where are SOX, SON, MH and MV when you need them

Max
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electrodeless sulfur lamp in a microwave oven


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Jan 24, 2016 at 08:35 AM Author: Max
Thanks for posting the picture of a working Tungar. I've always thought that the argon plasma was more diffuse in nature; it seems that the internal pressure is quite higher than I expected...
tuopeek
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tuopeek 111967450636623837217 tuopeek1
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Jan 24, 2016 at 12:42 PM Author: tuopeek
That's what I noticed too. You get thin discharge streamer internally when placed beside a tesla Coil.

Thanks for all the comments.
BlueHalide
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Jan 24, 2016 at 12:51 PM Author: BlueHalide
Photonicinduction on youtube has a vid of these firing up and operating, really cool lamps/diodes
tuopeek
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tuopeek 111967450636623837217 tuopeek1
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Jan 24, 2016 at 01:01 PM Author: tuopeek
He is a bit crueller to his stuff than me. Don’t watch what he did to a 200W SLI/H if you like lamps. It will make you cry
rjluna2
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Robert


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Jan 24, 2016 at 04:02 PM Author: rjluna2
I had to look up the spec from this type of tube here and now I know why the arc stream is so thin. According to the spec sheet, it could handle up to 450 Watts of power. Which it meant to have more Argon in it.

https://commons.wikimedia.org/wiki/File:Glow2arc.jpg

Pretty, please no more Chinese failure.

tuopeek
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tuopeek 111967450636623837217 tuopeek1
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Jan 24, 2016 at 04:26 PM Author: tuopeek
Thanks Robert, I hadn't looked up the specs but I had a 40W or so load for the picture and was controlling the heater to prevent the light saturating the camera. I thought it may take quite a load going by the carbon anode.
tolivac
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Oct 03, 2016 at 11:33 PM Author: tolivac
Used to have a battery charger that had one of those Tungar tubes.Still have a mercury one in my tube collection.A workplace I worked at had a 3 phase charger that used the tube I have.The 3 phase charger used 3 of those-48VDC output.Was for an old master control 48VDC switcher system.The charger fed those large Exide "fish tank" batteries.Loved the glow of those tubes!
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