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    Kollsman electronic averager power
    From: Art Leung
    Date: 2021 Nov 17, 06:28 -0800

    To those of you with the Kollsman sextant with the electronic averagers.  I do understand that the electronic averagers require quite a lot of current - I have a couple of questions.

    I currently use a USB battery pack and a DC-DC converter that I have adjusted to spit out 28V - I soldered on an Amphenol connector to the output and I use this to drive the bulbs on my Kollsman with the clockwork averager.  It works quite nicely.

    When I put this system onto a Kollsman with the electronic averager, it powers on the LED display and the display counts up to 60 when I hit the Start button.  Once it reaches 60, a smaller LED at the top flashes and then the system shuts down.  It restarts if I pull the power off and then put it back on.

    First question - I suspect that the issue here is that my portable power system cannot deliver sufficient current to power the averager and that is causing the averager to shut off after the 2 minute period is complete.  For the electronic averager experts, does it sound like a better power supply would do the trick?

    Second question - assuming it is a limitation of the power supply and I get the workaround for it, how does one read the post-shot display to adjust the index knob to find the average?

    I have found Gary LaPook's excellent post about how to create the requisite power supply!
    NavList: Re: Kollsman periscopic pendulous sextant (106215) (fer3.com)

    Thank you, in advance, for any help.

    -- Art

       
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