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 Post subject: OT - 74VDC LED E26 Base Light Bulbs
PostPosted: Fri Mar 24, 2017 8:25 am 
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Joined: Sat Jul 02, 2005 7:16 am
Posts: 1435
Not preservation related but an item that may be of interest, this company makes 74VDC LED E26 screw base light bulbs as replacements for incandescent bulbs. They are the 2nd item on the website listing.

Note the 65 degree directional lighting this provides which will limit the potential applications. This is not an omnidirectional light bulb like some of the household LED bulbs. It is intended for step lights, ground lights, and other directional lighting applications.

http://www.ledtronics.com/Products/Prod ... aspx?WP=26

PC

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 Post subject: Re: OT - 74VDC LED E26 Base Light Bulbs
PostPosted: Fri Mar 24, 2017 10:15 am 

Joined: Tue Sep 22, 2015 12:36 pm
Posts: 197
WOW somebody finally listened to the market

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"What smells like Lube Oil and Diesel? Oh It's just my Locomotive Breath"


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 Post subject: Re: OT - 74VDC LED E26 Base Light Bulbs
PostPosted: Sat Mar 25, 2017 12:05 am 

Joined: Thu May 21, 2015 9:33 am
Posts: 141
Now if I could find some good rough service 36vdc E26 or E27 base LED bulbs for my centercab ground and cab lights...

Thanks for the link.

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Adam McDowell
Shaw Air Force Base Rail Operations
Superintendent, Foxville and Northern Railroad


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 Post subject: Re: OT - 74VDC LED E26 Base Light Bulbs
PostPosted: Sat Mar 25, 2017 1:24 am 

Joined: Sat Aug 28, 2004 3:25 am
Posts: 1025
Very much preservation related--there are a lot of preserved vintage diesels that will need various lights replaced from time to time.

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Bob Davis
Southern California


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 Post subject: Re: OT - 74VDC LED E26 Base Light Bulbs
PostPosted: Sat Mar 25, 2017 6:11 pm 

Joined: Mon May 24, 2010 10:22 am
Posts: 475
Quote:
Now if I could find some good rough service 36vdc E26 or E27 base LED bulbs for my centercab ground and cab lights...

Thanks for the link.

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Adam McDowell


If you look at the spec sheet the bulb comes in 32 & 74 VDC versions.

-Hudson


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 Post subject: Re: OT - 74VDC LED E26 Base Light Bulbs
PostPosted: Sat Mar 25, 2017 8:16 pm 

Joined: Thu May 21, 2015 9:33 am
Posts: 141
HudsonL wrote:

If you look at the spec sheet the bulb comes in 32 & 74 VDC versions.

-Hudson


I must be missing it, the one sheet says 28-30v, the other has 50v, 60v, and 75v listings.

I do see where it says other voltages available lower down. I wonder what kind of quantity I would need to order.

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Adam McDowell
Shaw Air Force Base Rail Operations
Superintendent, Foxville and Northern Railroad


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 Post subject: Re: OT - 74VDC LED E26 Base Light Bulbs
PostPosted: Sat Mar 25, 2017 8:34 pm 

Joined: Mon May 24, 2010 10:22 am
Posts: 475
I think the 28-30 VDC bulbs will work at 36 VDC just fine, the power supply will just run a little bit hotter.

-Hudson


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 Post subject: Re: OT - 74VDC LED E26 Base Light Bulbs
PostPosted: Sun Mar 26, 2017 6:37 am 

Joined: Fri Mar 04, 2005 5:29 pm
Posts: 261
Location: Three Bridges NJ
Aamsco Lighting.

http://www.aamsco.com/

Link for their railway bulbs.

http://www.aamsco.com/light-bulbs/railway.php


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 Post subject: Re: OT - 74VDC LED E26 Base Light Bulbs
PostPosted: Sun Mar 26, 2017 4:00 pm 

Joined: Thu Nov 22, 2007 5:46 am
Posts: 2523
Location: S.F. Bay Area
Assuming the insulation is able to handle 36V... it'll run *cooler*. Heat is amps squared, and the switching regulator is drawing lower amps because of the higher voltage.


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 Post subject: Re: OT - 74VDC LED E26 Base Light Bulbs
PostPosted: Sun Mar 26, 2017 9:07 pm 

Joined: Thu Dec 12, 2013 1:26 pm
Posts: 72
Is the life of LED bulbs shortened if the voltage is higher?


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