I know some folk who take the "thin/wide" advice to its logical (and cheap)
conclusion and use copper clad PCB material as a base on which all their
equipment sits. They then use short/wide straps soldered directly to this base
to connect to the back of the equipment. It doesn't look "pretty" but it does
mean a low-inductance path between all the bits of kit.
73,
Steve G3TXQ
----- Original Message -----
From: Martin AA6E
To: Discussion of Ten-Tec Equipment
Sent: Monday, January 08, 2007 7:07 AM
Subject: Re: [TenTec] A grounding question
Mike Bryce wrote:
Don't know about any "experts" here, but my ITT Radio Engineers Handbook
gives a skin depth of 2.6 mils (0.0026 inch) at 1 MHz for copper. So at
HF frequencies and higher, most all the current flows in the top (say)
10 mils of the copper -- any copper below that doesn't help very much.
Pound for pound and dollar for dollar, thin/wide strap gives the lowest
impedance connection.
Even at 60 Hz, the skin depth is sometimes important - about 1/3 inch.
73 Martin AA6E
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