Re: Coil efficiency

• To: "'Tesla List'" <tesla-at-poodle.pupman-dot-com>
• Subject: Re: Coil efficiency
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Mon, 17 Nov 1997 01:27:32 -0600
• Approved: tesla-at-stic-dot-net

From: 	Ted[SMTP:tedric-at-generation-dot-net]
Sent: 	Sunday, November 16, 1997 2:44 PM
To: 	tesla-at-pupman-dot-com
Subject: 	Coil efficiency

Hi all,

I have this question in my mind for weeks: According to the 1996 (or any)
edition of "The ARRL Handbook For Radio Amateurs", "the (coupling)
coefficient with air-core coils may run as high as 0.6 or 0.7 if one coil is
would over the other." This is logical to say that the maximum efficiency of
a regular (3 air-core coils) magnifier system can never beyond 70%, yet I
remember that in one of Richard Hull's tapes, Richard said that it can
approaches 100%. How come?

Also, what is the maximum efficiency of a soild state magnifier? 


Ted

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