Re: ? on small battery operated fluorescents


<emailaddress@xxxxxxxxxxxxx> wrote in message
news:1a613160-944e-47ea-8636-76abab39c34f@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
For some reason I'd thought you mentioned using 2 x AA cells while you
instead wrote 4. Ignore the parts of my prior reply which were based
on that mistake.

No problem. I hadn't thought about that being an older and less efficient
part (the fluorescent tube). Would obviously rather work towards something
that
worked well. That was just the best thing I found at the time. Have since
found that the manufacturer of the parts used in that project is based in
the UK (I am in the US) and has recently been bought by someone else.
Nobody seems to be able to locate a transformer core or form, and the US
sales office doesn't answer their phone/hasn't replied to my email. Also,
the
transistor called for is an obselete part for which there is no exact
substitute. I could use the next part in line (tolerant of higher
emmitter/collector voltages etc.) but it's still not a late design. Would
rather work with something more recent.

Recently found a couple of these at my local electronics candy store...

http://www.logical-lighting.com/pdf/LEDHPModuleWhitePDF.pdf

and built an emergency lantern out of them, using a couple of six-cell AA
holders and a 7812 voltage regulator. It's not very impressive though, and
I was thinking of doing something similar with the two LEDs for the
flashlight and a fluorescent tube down the side, with a three-position
rocker switch to select which funcion is activated. Would love it if
someonecould point me in the right direction for something like this. Do
appreciate the help so far...

Dave





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