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found a really interesting paper
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To: tesla%grendel-at-objinc-dot-com
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Subject: found a really interesting paper
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From: EDHARRIS-at-MPS.OHIO-STATE.EDU
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Date: Sun, 05 Mar 1995 22:27:03 -0500 (EST)
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>Received: from ohstpw.mps.ohio-state.edu by ns-1.csn-dot-net with SMTP id AA13829 (5.65c/IDA-1.4.4 for <tesla%grendel-at-objinc.COM>); Sun, 5 Mar 1995 20:27:06 -0700
I found a paper of interest to coilers. It's "H.F. resistance and Self
capaciatnce of single layer soleniods" by R.G. Medherst - Wireless Enginner
Vol #2, Feb 1947 Pgs 35-43,80-88. Also see correspondence on page 185 and
281.
Using experiments on 40 different coils of different aspect ratios and
winding pitches he gives tables and formulsa for estimating the HF inductance
, resistance, and Q factor of single layer coils. best paper I've found so
far on the subject!
One interesting aspect covered is why Palermo's formula for the "self
capacitance" of solenoids is so far off for tight winding ( tight winding
is seen NOT to increase the self capacitance!
BTW wireless engineer is now known as something like electronics technology
. the library of congress number is tk6540w79
take care,
-Ed