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#31
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Mom (1938 - 2013) - RIP, I miss you Spunky, (1999 - 2016) - RIP, pretty girl! Rascal, (2007 - 2021) RIP, miss you very much |
#32
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Well I broke down and decided to see what exactly China might have. Perhaps there's factories out there that can wind ballasts for 110v?
Sure can. Almost immediately I have multiple manufacturers and suppliers through Alibaba who can deliver the desired ballasts in minimum quantities as low as 10 units which is enough to do what I want. I will have to fire off a few RFQ's and see what they come back with for pricing and freight rates but this may turn out to be the way to go. ![]() Last edited by MIPS; 09-06-2018 at 07:46 PM. |
#33
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![]() It comes out to something like $334CDN after shipping or equally $27.83 per ballast. Seems a bit pricey however our only other option remained "New old Stock" ballasts from ebay that are several decades old and are NOT PCB-free for $44.03CAD each after shipping. These new ballasts are PCB-free, assured to be good and they're pretty much doing a custom run to make them, so I get bragging rights on doing something insane. ![]() |
#34
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Please post pictures and a full report when you receive them. |
#35
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Fluorescent lighting can affect you eyes. They could installed devices that would rise up the electric network frequency up to 200 Hz and eliminate that problem, but they didn't do it. Heck, it's good for me that still I don't have to put eyeglasses, 'cause I hate them.
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Audiokarma |
#36
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Fluorescent lighting is a very real hazard in workshops with rotating machinery. Due to strobe effects this can appear stationary or slow moving when it's not. In the UK the usual solution was 3 phase fittings or lead-lag fittings. Running tubes in sets of 3 from 3 phase increased the flicker rate from 100Hz to 300Hz which was sufficient with the phosphor persistence to solve the problem. Lead-lag fittings could be used where 3 phase wasn't available or practical. These used a mixture of L and C in the ballast to operate 2 tubes with something approaching the equivalent of 200Hz flicker.
HF ballasted fluorescents give a nice steady light and better efficiency than 50/60Hz. Now obsolete with the rise of LEDs. Some LEDs using rectified mains have flicker that's as bad as fluorescents. Others use high frequency or smoothed DC and are safe with machinery. Then you often get radio interference from HF designs. |
#37
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I've yet to run across a shop type fixture that uses smoothed(filtered DC) here in the US. I would imagine that would kill the efficiency, although I would prefer a less efficient linear DC supply for area's where rf interference is critical. I suppose one could tare into the circuitry and modify the power supply to ones own liking.
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#38
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They seemed brighter from minimizing stroboscopic effect. |
#39
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One day my eyes just happened to glance up and notice a wire off on a utility pole next to our shop...I called the power company to let them know. (It didn't effect us.) Later the manager of the big warehouse next door came by to tell me that he'd been trying to figure out why (only) part of his lights wouldn't come on!
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Bryan |
#40
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And so our adventure finally ends with a (well rounded) box at the step this afternoon.
![]() ![]() ![]() ![]() Was it worth it? Each to their own! ![]() |
Audiokarma |
#41
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Whatever helps you stare blankly at the ceiling and happily say "damn it, I left the lights on" at night.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#42
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If blindly handing one's resources over to China is considered insane, then most of Western society is. |
#43
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Edited: Also for this lamp housing at least I can say the new ballast at a glance sure looks a lot less likely to give me cancer. ![]() Last edited by MIPS; 09-15-2018 at 03:46 PM. |
#44
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So have you measured the voltage at the lamp terminals? I'm wondering if there is some off the self part that would work?
I think the PCB's in old ballasts was contained in the oil inside a capacitor for the rapid start feature. I had a mid 60's sign ballast that popped one of those oil filled caps and boy what a mess. When they short they boil a mixture of tar and oil out of the ballast seams. Of course that ruined the reveres painting inside the sign face. Not sure if it contained PCB's but I had to clean up the huge mess none the less. ![]() Last edited by Kevin Kuehn; 09-16-2018 at 02:50 PM. |
#45
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Last edited by Kevin Kuehn; 09-16-2018 at 03:13 PM. |
Audiokarma |
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