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Re: optimal aspect ratio
Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>" <davep-at-quik-dot-com>
> Fellow coilers,
> The latest edition of a German radio amateur magazine is dealing with
> the optimal aspect ratio of cylindrical single layer air core coils
Optimal for what purpose?
> (like the solenoid type primaries in our TC systems).
> The author proves, that coils with an aspect ratio length/diameter of
> 0.45 provide maximal inductance and minimal resistance.
> The number of turns is calculated from
> 7.43 x 3rd root(L in ÁH/dia in mm)
> Unfortunately there is no URL available (the publisher wants to sell
> the copies of course.
(possible) influence of length of wire, as independent
...the net of a million lies...
There are Many Web Sites which Say Many Things.