71   Lanterns/Fixtures / Modern / Re: Impact of a cycling lamp  on: November 30, 2025, 06:07:42 AM 
Started by stillaintjeff24 - Last post by RRK
If you have a wire going from an ignitor to a special tap on ballast choke or transformer, then yes, you have semiparallel ignitor circuit that uses ballast windings to get high ignition voltage.
 72   Advertisements / For Sale or Trade / Ballast Sale  on: November 30, 2025, 05:35:46 AM 
Started by stillaintjeff24 - Last post by stillaintjeff24
Hey everyone, I have a bunch of ballasts I’m looking to get rid of in the near future. If anyone is interested let me know. They are still sealed with a few open box. Complete with mounting gear, cap and ignitor if necessary. These are 4 tap, and made within the last 6 years if you need ballasts to test lamps or want something you don’t care about. Probably looking to do 20-30 a ballast, maybe lower depending on wattage and if shipping gets high. I have uploaded the pictures on my gallery in the gear section. Selection ranges 39-1000 watt metal halide.
 73   Advertisements / For Sale or Trade / Re: Any Southern California collectors looking for lamps and fixtures? Downsizing  on: November 30, 2025, 05:30:59 AM 
Started by Silverliner - Last post by stillaintjeff24
What kind of lamps?
 74   Lanterns/Fixtures / Modern / Re: Impact of a cycling lamp  on: November 30, 2025, 05:30:07 AM 
Started by stillaintjeff24 - Last post by stillaintjeff24
It seems to have the same ignition correct as any other American ballast would.
 75   Lanterns/Fixtures / Modern / Re: Impact of a cycling lamp  on: November 30, 2025, 05:05:55 AM 
Started by stillaintjeff24 - Last post by RRK
How bad is a cycling lamp for a fixture? I have a Hps Wallpak, and the lamp cycles. I think it’s cool looking, but I know it is hard on the components. How bad is it to have it running for maybe 2 or 3 hours?

Inexpensive American luminaire is probably using a tap on the ballast choke to generate HPS HV ignition pulses. So yes, cycling HPS is stressing choke insulation repeatedly. How bad is this in practice, hard to tell, as HPS ignition voltage is typically low, less than 2kV.

 
 76   Lanterns/Fixtures / Modern / Re: Impact of a cycling lamp  on: November 30, 2025, 05:00:40 AM 
Started by stillaintjeff24 - Last post by RRK
Though, looking more carefully, it seems that ignitors should be ES/CT version to have timed cutoff.
 77   Lanterns/Fixtures / Modern / Re: Impact of a cycling lamp  on: November 30, 2025, 04:48:21 AM 
Started by stillaintjeff24 - Last post by RRK
ZRM 4.5-ES/C marketed as ignition cut-off, not sure if smart enough to prevent cycling, too.

Ignitor being TOO smart is the source of its problems in practice unfortunately...



 78   Lanterns/Fixtures / Modern / Re: Impact of a cycling lamp  on: November 30, 2025, 04:37:55 AM 
Started by stillaintjeff24 - Last post by dor123
@RRK: Are the Tridonic ignitors you got, anti-cycle or regular?
 79   Lanterns/Fixtures / Modern / Re: Impact of a cycling lamp  on: November 30, 2025, 04:34:32 AM 
Started by stillaintjeff24 - Last post by RRK
I know once there was a fire caused by neglecting to use a regular not-HV rated cable from ballast box to luminaire in the case of non-igniting MH lamp! So far, so good, ask me how I got four combos of nice NOS Tridonic 150W chokes with nice NOS Tridonic igintors for VERY cheap haha!

 80   General / Off-Topic / Re: Severe weather never sleeps!  on: November 30, 2025, 04:27:19 AM 
Started by lightinglover8902 - Last post by dor123
We had a rainfall today: https://www.youtube.com/watch?v=YPjPBihIw58
But it is the only one we will have this day.
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