westd...@aol.com
I wonder if it is the right UV light for a mineral lamp (compared to that laser
pen he carry's)
surround it with rocks and see if there is any greenium inside them
anyway the ticket here is to reflect the light off the rocks and see if there
is any absorbed and then reflected light of vairous colors, just like a crt tube
wear sun glasses to avoid snowblindness
in case of abomb hide behind glass this will help with the uv but not the blast
866 Mercury Vapor Rectifier as Novelty Lamp
threeneurons <threeneur...@yahoo.com> May 29 02:33AM -0700
I went to the TRW swap meet on Saturday, and picked up a 866 mercury
vapor
rectifier. The thing has a 2.5V 5 amp filament. Good thing I had this large
transformer in my stash with a 2.1V tap. Needed less than 50V to light it
up, and get the emission up to get more than 50mA thru. Tube is rated for
250mA max average.By sticking a 2200uf cap across the the tube, plate to
cathode, it turns into a relax oscillator. Tube drop is only 11V. I never
had a relax osc, that couldn't bite me. Even though this rectifier was
intended for use in power supplies capable of delivering thousands of
volts, this circuit is quite harmless, until the glass breaks:
http://www.dailymotion.com/video/x10b9ux_866-rectifier-as-relax-osc-flashing-light_tech#.UaXI2tKXSSo
Enjoy
Nick <n...@desmith.net> May 29 03:03AM -0700
On Wednesday, 29 May 2013 10:54:58 UTC+1, johnk wrote:
> Much UV leak out do you think
You read my mind - I would have thought that this was a real (not
imaginary) danger. Nearly all UV is absorbed by the front of your eyes,
causing corneal damage, cataracts & macular degeneration.
I'd really be very careful with this, especially if there are children
around - there are reasons that these things were run inside cabinets...
Nick
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