Swap in LEDs for this Old Unitron 3X Ringlight?

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Sure Squintsalot
Posts: 393
Joined: Mon May 16, 2022 3:44 pm

Swap in LEDs for this Old Unitron 3X Ringlight?

#1 Post by Sure Squintsalot » Thu Feb 09, 2023 12:41 am

I'd rather fix this thing than send it to a landfill:
Screenshot 2023-02-08 173341.jpg
Screenshot 2023-02-08 173341.jpg (77.18 KiB) Viewed 1600 times
Except for one, the incandescent lights still work though the overall light is relatively dim:
Screenshot 2023-02-08 173430.jpg
Screenshot 2023-02-08 173430.jpg (106.05 KiB) Viewed 1600 times
Are there directly replaceable LED bulbs that will fit this screw mount?
Screenshot 2023-02-08 173502.jpg
Screenshot 2023-02-08 173502.jpg (185.05 KiB) Viewed 1600 times

BramHuntingNematodes
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Joined: Tue Jan 21, 2020 1:29 am
Location: Georgia, USA

Re: Swap in LEDs for this Old Unitron 3X Ringlight?

#2 Post by BramHuntingNematodes » Thu Feb 09, 2023 5:57 am

Love the concept of those old unitron fixtures. Some bright LEDs could be just the ticket
1942 Bausch and Lomb Series T Dynoptic, Custom Illumination

MichaelG.
Posts: 3976
Joined: Mon Apr 10, 2017 8:24 am
Location: North Wales

Re: Swap in LEDs for this Old Unitron 3X Ringlight?

#3 Post by MichaelG. » Thu Feb 09, 2023 7:23 am

Sure Squintsalot wrote:
Thu Feb 09, 2023 12:41 am
Are there directly replaceable LED bulbs that will fit this screw mount?
The thread looks to be machined rather than formed … which suggests that the lamps were custom-made.

Some dimensions would be useful if we are hoping to ‘reverse engineer’ the design … but yes, I agree
That arrangement, with LEDs fitted, looks like ‘a marriage made in heaven’

MichaelG.

.

Edit: __ This looks to be from the same family [similar but not identical]
https://www.bulbworks.com/light-bulbs/EL-17
Check the price they are asking for the remaining stock items :o
Too many 'projects'

Sure Squintsalot
Posts: 393
Joined: Mon May 16, 2022 3:44 pm

Re: Swap in LEDs for this Old Unitron 3X Ringlight?

#4 Post by Sure Squintsalot » Mon Feb 20, 2023 6:10 pm

For anyone wondering....

Those micro-incandescent lights can be replaced with a drop-in dimmable LED equivalent. I found them here:


Screenshot 2023-02-20 110717.jpg
Screenshot 2023-02-20 110717.jpg (121.14 KiB) Viewed 1080 times
The power supply running them didn't output 12v so I don't know about the 3 lumens these lights supposedly generate. They are certainly a LOT bluer than those old incandescents!

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