Was wondering if anyone has or knows of any era appropriate 1970s photocells. Preferably NOS to complement my mostly restored OV-25.

Thanks, John

Such glow discharge passes very little current, so i think would not maintain the LC resonant circuit. So either there is something else outside the SRS circuit (like anothe luminaire) that keeps it going, or that discharge is actually a DC discharge from the capacitor, current limited by the state of the discharge itself and not by the ballast

Get both 👍

I have tested SRS circuits in the past in an attempt to find out what exactly goes on. The voltage between the lamp electrodes during startup measures at around 270-280V. Whether this is due to resonance, or the fact that the voltage between the two coils is out of phase I don't know, but there is certainly a voltage boost.

If you disconnect the power to the circuit before the lamp has struck, the voltage across the lamp persists for around half a second, reducing slowly. This can be seen as a continuing glow discharge in the lamp that fades away.

Oh wow, I never knew about these! Extremely cool concept and fixture configurations! I can't fathom how expensive those would've been to build and install.

I find it interesting that Westinghouse made these. I was thinking something along the lines of Wide-Lite or Sterner Lighting.

@rjluna, good luck with the surgery. 
@icefoglights can you delay a day?  I would love to meet you!

I had heard about this since I'm in the area, but I'm flying back to Alaska on the 5th 

Would you be fine getting other clear 1000W H36 mercury vapor lamps? I have seen a few GE HR1000A36 lamps priced at $50USD a piece on replacementlightbulbs.com

Looking for one of these for a reasonable price, ideally unused