[whiskey79]

I helped rewire the beacon of a lighthouse once. It's a bulb changer inside of first order fresnel lens. If the bulb goes bad it flips around and the other one takes its place

 

[AllWIRES]

:thumbup:

Reminds me of the airfield beacons

 

[HARRY304E]

What is the lamp wattage?, are they metal halide?

 

[AllWIRES]

1 milllllliooon

in my best Dr. Evil voice

 

[Vintage Sounds]

What is the lamp wattage?, are they metal halide?

There is a filament so I'm thinking it could be incandescent.

 

[HARRY304E]

There is a filament so I'm thinking it could be incandescent.

Interesting, also it could be something that heats up the mercury faster .

 

[dogdriver]

Sweet job. Lighthouse bulb changer. Awhile back they used fire!

Sent from my LGL35G using Tapatalk 2

 

[Chrisibew440]

That's efin bad.

 

[whiskey79]

Interesting, also it could be something that heats up the mercury faster .

I think they were 200w. You might be right about heating up faster because there is flasher controlling it that switches it on and off in a sequence. There is a relay on the changer that we had to put a shield around because the lens was focusing the sun on it and melting it.

 

[whiskey79]

I think that bulb changer was made back in the '50s

 

[dspiffy]

No one ever told me about this on career day

 

[dmxtothemax]

I think its more likely a 2000w lamp !
Rather than a 200w lamp !

 

[Meadow]

Interesting, also it could be something that heats up the mercury faster .

That would be a germicidal lamp if it was so. I would guess this ones straight halogen.


How many watts and how many volts? Where does on get a bulb like this?

 

[Big John]

Very cool. Only 200W? I'm surprised.

I don't get the idea behind the "bulb changer". Is it actually something that physically moves the lamps, or does it just detect current loss in one lamp and electrically switch to another?

I once worked on a radio-tower light controller that did that electrically, and it would send an alarm to notify someone the first lamp was out.

 

[Meadow]

Very cool. Only 200W? I'm surprised.

I don't get the idea behind the "bulb changer". Is it actually something that physically moves the lamps, or does it just detect current loss in one lamp and electrically switch to another?

I once worked on a radio-tower light controller that did that electrically, and it would send an alarm to notify someone the first lamp was out.

If its low voltage it might be. LV lamps are far more efficient. And no need to lock out tag out/ PPE for bulb change:jester:

 

[erics37]

They are incandescent. I went on the tour of Yaquina Head Lighthouse and they have a similar setup. The bulbs they use were 1500 watt incandescents or some such. The fresnel lens is the coolest part.

 

[whiskey79]

Very cool. Only 200W? I'm surprised.

I don't get the idea behind the "bulb changer". Is it actually something that physically moves the lamps, or does it just detect current loss in one lamp and electrically switch to another?

I once worked on a radio-tower light controller that did that electrically, and it would send an alarm to notify someone the first lamp was out.

It doesn't have to be very high wattage because the lens focuses the light. The changer swings the other bulb into position also because it has to stay focused.

 

[LGLS]

If its low voltage it might be. LV lamps are far more efficient. And no need to lock out tag out/ PPE for bulb change:jester:

LV lamps are not more efficient. Watts are watts no matter what the voltage.

 

[LGLS]

 

[Meadow]

LV lamps are not more efficient. Watts are watts no matter what the voltage.

Lumens per watt of a 12 volt 50 watt lamp? Lumens per what of a 50 watt 230 volt bulb? Similar life expectancies. Who wins?