| Electronics > Projects, Designs, and Technical Stuff |
| Fluorescent lamp ballast question |
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| iXod:
--- Quote from: themadhippy on August 11, 2019, 09:28:27 pm ---But we've got plenty of 110v stuff,normally found on building sites. --- End quote --- Can you point me to some 110v 20W 2-wire chokes for F20T12 lamp circuits? I've looked and don't see anything. |
| james_s:
I don't think they exist, and if they did, shipping iron chokes from the UK would be quite expensive. The UK building site stuff I've seen is mostly power tools and incandescent lamps. The single lamp 120V choke ballast arrangement was a North American thing. Is there a reason you don't want to just use a modern electronic ballast? It's trivial to install one. FWIW these little choke ballasts are used in the marquee lights of most vintage arcade games so there are still some NOS ones out there. https://www.ebay.com/itm/New-Video-Arcade-Game-Fluorescent-Light-Ballast-For-Header-Marquee-Light/333028048556? Here's another, 6 available as I write this: https://www.ebay.com/itm/Advance-LC1420CTP-PRE-HEAT-BALLAST-POWERS-1-F20T12-120V/183766641654? |
| iXod:
--- Quote from: james_s on August 13, 2019, 06:02:26 pm ---Is there a reason you don't want to just use a modern electronic ballast? It's trivial to install one. --- End quote --- Those ballasts are hard on bulbs and EMI-noisy. But it looks like i'll be doing that anyway. |
| james_s:
That depends on the ballast. There are lots of good quality electronic ballasts that are gentle on the lamps, much more so than the old choke ballast preheat start. The good ones typically called it "programmed start", they apply power to the cathodes for a determined period of time and then strike the arc. |
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