Osram Punktlichtlampe

A.C. tungsten arc lamp, 55 volts, 2 amps. Made around 1930 year. Filled with nitrogenium.

Category:

Science & Technology

Tags:

• Osram
• Punktlichtlampe

[BankaiIchigo12345]

Where can I get one of these?

[trianero2009]

@BankaiIchigo12345 This lamp is extremely rare piece. So ones a two years it is possible buy in any auction, but the price is up to 500 USD, depend on the level of conservation. New, unused is very rare.

[KrankieV2]

Does this lamp make a lot of noise?

[trianero2009]

No, nothing noise, neither accoustic, nor unstable arc radiation. It ia very stable light source, very quiet.

[dannyjaar]

Are this a new light bulb to replace the old ones

[trianero2009]

This lamp was made around 1930 year and don´t have any similar continuation. So if I want light it, I use 125 watt ballast for mercury discharge lamp.

[Kirill92omsk]

It is not accidental arc lamp designed in the 19th century?

[BankaiIchigo12345]

@trianero2009

I don't mean this specific model of lamp. I mean any "incandescent arc lamp" type lamp. Also, do these need a ballast to run?

[KrankieV2]

@trianero2009 That's awesome! I thought it would have a buzz or hum to it.

[SLJcz]

It was developed especially for microscopes, as simply, small light source. The tungsten balls works in nitrogenium athmosphere, wishes reduce visible light from arc. The lamp works at 55 volts, 2 amps, or I use succesfully ballast Hg 125W.

[douro20]

These types of lamps generate more light from the heating of the tungsten ball than from the arc itself. That's why they call them incandescent arc lamps.

[lgugue]

Really good! It seems that have a higher eficience compared to other kind of models from that time. Why it wouldn't had made after? Should have a big amount of UV radiation or need auxiliar devices to run?