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Possible Brownout Protection Device

 
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art(at)zemon.name
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PostPosted: Mon Apr 01, 2019 6:05 am    Post subject: Possible Brownout Protection Device Reply with quote

Folks,
I just ran across https://www.amazon.com/dp/B01DXEU4KA/ref=psdc_10967761_t3_B06XG2KPTS and I think it might work great as a brownout protection device for my EFIS during engine start. It is rated at 80W and 5A. I am thinking of wiring in in parallel with the feed to my normal bus (I only have one bus, no avionics bus) and energizing it from the starter relay.
I worry that, with an output voltage range of 0.5 to 33V, a failure could send 33V into my airplane.
What do you think?
    -- Art Z.
--
https://CheerfulCurmudgeon.com/"Love wins. Love always wins." Morrie Schwartz


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argoldman(at)aol.com
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PostPosted: Mon Apr 01, 2019 6:22 am    Post subject: Possible Brownout Protection Device Reply with quote

Or just use a backup battery and have the advantage of being able to use your efis in case of electrical failure... unless you are totally electric ... actually there to to help you get back to terra very firma
Rich
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On Apr 1, 2019, at 9:04 AM, Art Zemon <art(at)zemon.name (art(at)zemon.name)> wrote:
Quote:
Folks,
I just ran across https://www.amazon.com/dp/B01DXEU4KA/ref=psdc_10967761_t3_B06XG2KPTS and I think it might work great as a brownout protection device for my EFIS during engine start. It is rated at 80W and 5A. I am thinking of wiring in in parallel with the feed to my normal bus (I only have one bus, no avionics bus) and energizing it from the starter relay.
I worry that, with an output voltage range of 0.5 to 33V, a failure could send 33V into my airplane.
What do you think?
-- Art Z.
--
https://CheerfulCurmudgeon.com/"Love wins. Love always wins." Morrie Schwartz




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Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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user9253



Joined: 28 Mar 2008
Posts: 1402
Location: Riley TWP Michigan

PostPosted: Mon Apr 01, 2019 3:29 pm    Post subject: Re: Possible Brownout Protection Device Reply with quote

There needs to be a diode in the existing main power bus to prevent the DC-DC converter current from flowing to the starter.
Otherwise, that DC-DC converter will be unable to maintain 12 volts.
Depending on load, the DC-DC converter with a 5 amp rating might have trouble maintaining 12 volts, let alone putting out 33 volts.


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