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Old 4th June 2005, 04:57 AM   #1
karma is offline karma  Canada
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Default mercury vapor rectifier tubes on e-bay

if anyone is looking for somthing different for that next project
try these


http://cgi.ebay.ca/ws/eBayISAPI.dll?...778481775&rd=1

i would but i dont bid out of canada
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Old 4th June 2005, 08:20 AM   #2
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Why not ? Everyone else bids on stuff on the other side of the globe.
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Old 4th June 2005, 11:43 AM   #3
Colt45 is offline Colt45  Serbia
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I've got some 866's, they are cool tubes, other than the warmup, which is a little pain to design in.. no big deal though.

that and theyve gotta be choke loaded, etc.

I'm not sure if the glass used is opaque to UV, or if it lets it through... don't want to be burning my eyes out
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Old 5th June 2005, 02:30 AM   #4
kmtang is offline kmtang  Canada
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This tube is a half wave rectifier tube which take 2.5V 5A for the filament. I would rather go with the 83 rectifier tube instead.

With this kind of mercury vapor tube, please don't forget to add a standby switch for delaying the HT applied to the tube. It needs some warm up time.
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Old 5th June 2005, 03:51 AM   #5
Colt45 is offline Colt45  Serbia
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Quote:
Originally posted by kmtang
This tube is a half wave rectifier tube which take 2.5V 5A for the filament. I would rather go with the 83 rectifier tube instead.

An 83 can't do 10kV though
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Old 5th June 2005, 04:06 AM   #6
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... and 83s don't glow as nicely
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Old 5th June 2005, 04:16 AM   #7
kmtang is offline kmtang  Canada
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What kind of amplifier you want to go with? 10kV power supply is only good for the broadcast transmitters.

I believe you need to be more practical.

Johnny
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Old 5th June 2005, 05:29 AM   #8
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What kind of amplifier you want to go with?

Those are used for powering max legal (+) ham rigs. A bit excessive for most audio applications. And, no, glass is not transparant to UV. "Fused quartz", however, is quite transparant to UV, which is why Hg vapor lamps require shielding.
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Old 19th June 2005, 02:17 PM   #9
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Default Mercury Rectifiers are bad news!

Dont waste your time with mercury rectifiers. Those of you that think solid state rectifiers are a problem should try mercury! You can see the trash on a scope!
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Old 19th June 2005, 02:30 PM   #10
amperex is offline amperex  United States
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Coolest MV out there. Whole globe glows. Only issue with MV is they are noisy, thus I use vacuum type rectifiers. Of course, the noise or sometimes called 'hash' can be filtered out.
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