From: Mark Hanchey <cgimark@gmail.com>
To: Microcontroller discussion list - Public. <piclist@mit.edu>
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Date: Tue, 4 Feb 2020 06:27:10 -0800
Subject: Re: [EE] Power transmission
Thread-Topic: [EE] Power transmission
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References: <5E38A14C.8050802@narwani.org>
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If you want to set up something simple for a test you need a mosfet driver,
a coil of 20awg or so wire, about 30 turns in a coil about 3 inches across,
a coil with about 200uh , a 200pf cap and a schottky diode.  That is the
sending parts and the receiving part is a coil as close to the first 30
turn coil in size and shape.  I can post more details if interested . This
will transfer about 3 watts using a frequency of 250khz  over a distance of
about 1 inch.   Of course you also need a frequency generator with square
wave output.    The most important part is the coils, the better the q the
more efficient it will be.


On Mon, Feb 3, 2020, 5:44 PM Neil <picdude3@narwani.org> wrote:

> I'm tinkering with power transmission for getting power from behind a
> wall panel to in front.  For now I'm just experimenting with the idea,
> but I can't find much info on the relationship between coil diameter,
> wire diameter, number of turns, frequency, and distance.
> Anyone here know anything about this?
>
> Cheers,
> -Neil.
>
>
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