[kansei]

I bought a lot of vacuum tubes on eBay and ended up with a bunch of nice ones. I also got what's in the picture. Does anyone know what it is, if it's even a vacuum tube? Thanks.

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Mystery solved - it's an old GE movie projector bulb.

 

[MD1032]

That almost looks like a light bulb, frankly.

 

[kansei]

I was thinking it may be a heater bulb, a really old one. The box had a few old light bulbs in it...

 

[madmax7]

I'd say vintage light bulb possibly automotive.

 

[Uncle Erik]

A vacuum tube with just the filament. Or a lightbulb.

I think there are only two electrodes going into the base, so it probably only lights up.

You know, it looks like an old projector bulb to me.

Hang onto it - old lightbulbs are cool, too.

 

[kansei]

Quote:

Originally Posted by Uncle Erik /img/forum/go_quote.gif A vacuum tube with just the filament. Or a lightbulb. I think there are only two electrodes going into the base, so it probably only lights up. You know, it looks like an old projector bulb to me. Hang onto it - old lightbulbs are cool, too.

Wow, you're right. It's an old GE movie projector bulb, 300 watts. It was going to bother me not to know what it was. Thanks.

Vintage GE Movie Projector Lamp Bulb CXK 300W 120V - eBay (item 320328880967 end time May-30-09 09:46:26 PDT)

 

[cyberidd]

Its my 500th post, thats what it is!!! (its only taken me since 2007; at this rate its only 4 more years before I reach Headphoneus Supremus!)

 

[dj_mocok]

Looks like torpedo to me.

 

[ericj]

it's a streetlight