[TenTec] A grounding question

[Steve Hunt]

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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