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Need 6V ballast for 9W CFL

Started by Steve May 21, 2015
Does anyone know where I might get a ballast to drive a 9W CFL tube (germicidal
lamp) from a 6V source?  There are a number of good circuits around, but all
require a custom-wound transformer, which would be difficult for me.

A bare circuit board is fine.  Don't want it enclosed in a metal case.

I need 10 of these things.

Thanks in advance.

Steve
On Thursday, May 21, 2015 at 5:55:57 PM UTC-7, Steve wrote:
> Does anyone know where I might get a ballast to drive a 9W CFL tube (germicidal > lamp) from a 6V source? There are a number of good circuits around, but all > require a custom-wound transformer, which would be difficult for me. > > A bare circuit board is fine. Don't want it enclosed in a metal case.
The easy way to find one, is to get a fluorescent battery lantern; the common camping types run on 6V from four D or AA cells <http://camping.lovetoknow.com/AA_Fluorescent_Lantern>
Steve <nospam@nowhere.org> wrote:
> There are a number of good circuits around, but all require a custom- > wound transformer, which would be difficult for me.
http://www.repairfaq.org/sam/samschem.htm#schssi uses a standard 120 V to 6.3 V center-tapped transformer.
> A bare circuit board is fine. Don't want it enclosed in a metal case.
The 6 V input might be hard to find. Maybe use something with a 12 V DC input, like http://www.lightbulbsdirect.com/LowVoltBA/IB111.html , and then precede that with a 6 V to 12 V DC-DC converter. Matt Roberds
Steve wrote...
> > ... There are a number of good circuits around, > but all require a custom-wound transformer, > which would be difficult for me.
The ballast ICs use switching-supply frequencies on their transformers, which means you're limited to a few hundred turns at most, not too many to do by hand. For 10 pieces, make a little fixture so your hand drill can turn the bobbin. Usually an accurate turns count isn't that important. -- Thanks, - Win
On Thu, 21 May 2015 18:09:56 -0700 (PDT), whit3rd <whit3rd@gmail.com> put
together some random words that came up with:

>On Thursday, May 21, 2015 at 5:55:57 PM UTC-7, Steve wrote: >> Does anyone know where I might get a ballast to drive a 9W CFL tube (germicidal >> lamp) from a 6V source? There are a number of good circuits around, but all >> require a custom-wound transformer, which would be difficult for me. >> >> A bare circuit board is fine. Don't want it enclosed in a metal case. > >The easy way to find one, is to get a fluorescent battery lantern; >the common camping types run on 6V from four D or AA cells > ><http://camping.lovetoknow.com/AA_Fluorescent_Lantern>
Gets a bit pricy for 10 of them.