While LED ‘fluorescent’ lamps quite possibly are a better alternative, the ones I have pulled apart and played with are certainly intended for a.c. supplies. Maybe there are other designs available.
Seashore also has some former Boston elevated subway cars in their collection, and I suggested a good starting point would be to see if any of these older cars have fluorescent lamps of the same design as the Ps used. Certainly if the subway car lamps are compatible, and eight were available, it could well be the simplest restoration solution.
Something we can’t fathom here is that at the moment Seashore is totally snowbound, as it is every winter, and they can’t even get to any of their subway cars to check out what lighting they have.
One way or another, it certainly would be great to see the lights shining on the P again. While it is likely that majority of P class were equipped with these illuminated advertising panels, it seems that SPER’s 1497 was never one of them.
Richard
On 12 Mar 2019, at 7:13 pm, Malcolm Rowe mal.rowe@...> wrote:
I have used these devices - although in the 8' version - on a carnival ride many years ago.
For the application that Richard is considering (backlighting Women's Weekly ad on a P car) I would have thought that an array of LEDs would be a far better solution.
Mal Rowe - who remembers the kids on the ride seeing the ballasts explode thought it was parts of the special effects
> On Tue, Mar 12, 2019 at 8:46 AM Matthew Geier matthew@...> wrote:
> https://www.lightonline.com.au/philips-tl-x-xl-low-pressure-mercury-discharge-40w-single-pin
>
> Intended for explosive environments as no 'spark' is needed to start the
> tube.
>
> Rated at 100v. I guess you put 3 in series with 3 series incandescent
> for current limiting....
>
>
>
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Mal Rowe - AU