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 A source for the 6 volt number 328 bulbs for use in the Kollsman
sextant

-------- Original Message --------
Subject:    Distributors of part 328








http://www.sourceesb.com/ProdSearch.asp?regid=0&search=328&sname=PNS&type=E&action=search



On Aug 31, 12:27 pm, glap...@pacbell.net wrote:
> That is exactly what is used with the A-10 sextant, 4.5 volts from
> three size "D" batteries. If you have one of the more modern Kollsman
> sextants that use an electronic averager you do need to supply 28
> volts to the averager since they won't work on less. For use in an
> airplane, you can make a 28 volt power suppy with one integrated
> circuit and a small amount of soldering. The IC converts 12 volt DC to
> 28 volt DC and costs about $25.00. I made one and can find the source
> for this IC if anybody wants to do the same. You can also get 27 volts
> out of 3, 9 volt batteries wired in series. This works fine for the
> lights but the averager uses about 150 ma so these betteries don't
> last long powering up the averager. And they are expensive.
> You can also replace the 28 volt bulbs, or in your case the 3 volt
> bulbs, with 6 or 12 volt bulbs that are the same size and power them
> up with other battery combinations or with a cable to your lighter
> socket in the plane. If anybody needs the source for these other bulbs
> I can find it again. I think I posted all of this information on bulbs
> and on the IC about a year ago so you can probably search the archive
> for it also.
>
> gl
>
> On Aug 31, 6:56 am, werner  wrote:
>
> > Actually my Kollsmans are Euopean license builds (1 from Kollsman-
> > Germany and the other 2 from Kollsman-UK, and had been used in the
> > respective air forces). Those sextants have a 3 Volts lighting system.
> > 28 Volts only go into the gimbal aircraft mount. Within it the voltage
> > is transformed into 3 Volts to go into the sextant. The usual method
> > (when not installed in an aircraft) is to use a modified flashlight
> > (instead of the bulb there is a connector for a cable) with 3 D-cells
> > (flashlights were provided in the storing case).
>
> > Werner
>
> > On 31 Aug., 04:49, glap...@pacbell.net wrote:
>
> > > BTW, if you need a 28 volt power supply for using your sextant at home
> > > just go down to Home Depot and buy a water sprinkler system electric
> > > transformer which puts out 28 volts and is cheap.
>
> > > gl
>
> > > On Aug 27, 12:12 pm, werner  wrote:
>
> > > > Hi,
> > > > Has anyone a manual for this sextant? I need one for the "non-bubble"
> > > > type, but with the pendulum. I have three of these sextants (two good
> > > > ones, one needs overhaul).
>
> > > > Thank you.
>
> > > > Werner
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