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Maximum voltage incandescent bulbs are made

J

jriegle

Jan 1, 1970
0
With the potential of arcs being struck in gas filed bulbs and electron
emission in vacuum bulbs, I wonder what the maximum voltage design is?

I've seen sealed beam headlamps in a car burn out and strike a bright
purplish arc for a second when the voltage regulator failed. Given that, 240
volt lamps must be pushing things a bit even in normal operation, yet they
are quite common in countries with 240 volt supply.
John
 
V

Victor Roberts

Jan 1, 1970
0
With the potential of arcs being struck in gas filed bulbs and electron
emission in vacuum bulbs, I wonder what the maximum voltage design is?

Interesting question, but I don't know the answer :)
I've seen sealed beam headlamps in a car burn out and strike a bright
purplish arc for a second when the voltage regulator failed. Given that, 240
volt lamps must be pushing things a bit even in normal operation, yet they
are quite common in countries with 240 volt supply.
John

Incandescent lamps contain a fuse that blows if an arc is struck.
 
C

Clive Mitchell

Jan 1, 1970
0
In message
jriegle said:
I've seen sealed beam headlamps in a car burn out and strike a bright
purplish arc for a second when the voltage regulator failed. Given that, 240
volt lamps must be pushing things a bit even in normal operation, yet they
are quite common in countries with 240 volt supply.

There is a tendency for our 240V lamps to fail with a pop and a flash,
due to the formation of an internal arc when they fail. This tends to
affect the smaller lamps.
 
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