Carbon Flourescent Lamps ???

[christofire]

"Eeyore" <rabbitsfriendsandrelations@hotmail.com> wrote in message
news:48824755.7AE5201E@hotmail.com...

christofire wrote:

"Eeyore" <rabbitsfriendsandrelations@hotmail.com> wrote in message
kreed wrote:

Hm, maybe they got confused with carbon-arc lamp ?

Even seen one of those ?

'Even'? ... did you mean 'Ever'?

Yes.


There's probably a pun in that somewhere (remaining eye, etc), but I
recall
they were used extensively in film, making and projecting, until HID came
along.

You bet and ancient theatre lighting too IIRC.

My school friends and I built one in our spare lab. Despite the
significant
ballast resistor it still blew a fuse.

Graham

.... with my sincere apologies to anyone I may have offended with my mention
of a possible pun.

I can remember being shown round Ealing Film Studios as part of a
'management' course when it still had motor-generator sets in its 'power
house' to supply DC mains for arc lamps. Must have been in the mid to late
seventies. I thought at the time: why do generators always seem to end up
having much larger diameters than alternators? Is it something to do with
increasing the ripple frequency?

Chris

 

[Phil Allison]

"F Murtz"

Wots a flourescent lamp?

** Something the lighting industry intends to make a lot of * dough * out
of.




..... Phil

 

[kreed]

On Jul 20, 12:51 am, "christofire" <christof...@btinternet.com> wrote:

"Eeyore" <rabbitsfriendsandrelati...@hotmail.com> wrote in message

news:4881B73B.3300DB9@hotmail.com...



kreed wrote:

Hm, maybe they got confused with carbon-arc lamp ?

Even seen one of those ?

Graham

'Even'? ... did you mean 'Ever'?

There's probably a pun in that somewhere (remaining eye, etc), but I recall
they were used extensively in film, making and projecting, until HID came
along.

Chris

Yes, in an old cinema projection room about 10 years ago. I doubt it
had been energised for decades prior to that, and I wouldnt have
risked turning it on after all that time without a thorough check of
all the wiring in the place.

I also made one about 20 years back using carbon rods cut from out of
"d" batteries, and powered it from a couple of 2v Lead acid batteries
in series. Worked well, (for what it was) but doubt its very
efficient. No mercury though

 

[Bob Parker]

On 20/07/2008 12:00 Phil Allison wrote:

"F Murtz"
Wots a flourescent lamp?


** Something the lighting industry intends to make a lot of * dough * out
of.




.... Phil

Geez....