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SO/H burners

SO/H burners

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Three SO/H low pressure sodium lamp inner tubes are shown here, each with different electrode construction.

tesla_lamp.jpg SOH60_on.jpg SO_electrodes.jpg neon2.jpg

Light Information

Light Information

Manufacturer:Mazda / EKCO
Lamp
Lamp Type:SO/H
Base:BC
Electrical
Wattage:140w / 60w

File information

File information

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Filename:SO_electrodes.jpg
Album name:tuopeek / Low Pressure Lamps
Keywords:Lamps
File Size:108 KB
Date added:Dec 17, 2015
Dimensions:1000 x 749 pixels
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Date Time:2015:12:17 20:32:59
DateTime Original:2015:12:17 09:13:02
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Lampje
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passionated lightbulb collector


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Dec 17, 2015 at 04:10 PM Author: Lampje
Very nice.
Do you have the glass holders too?
tuopeek
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GLS lamp on Tesla Coil


tuopeek 111967450636623837217 tuopeek1
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Dec 17, 2015 at 05:09 PM Author: tuopeek
Just 2 outer tubes 140w and 60w
Globe Collector
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Preserving the Brightest Ideas of Our Age


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Oct 13, 2016 at 12:38 AM Author: Globe Collector
These must be quite early designs, particularly the one in the middle....look at those turn-and-a-half transverse electrodes,

Manufactured articles should be made to be used, not made to be sold!

tuopeek
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GLS lamp on Tesla Coil


tuopeek 111967450636623837217 tuopeek1
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Oct 13, 2016 at 12:41 PM Author: tuopeek
Not sure of the age of the middle lamp, but the 140W on the left is about 1964. I thought it may be the oldest as doesn't have the ceramic sleeves at the glass/metal seals. I believe these were added as this was a weak spot in early lamps. However the date code suggests it could be as old as 1961.
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