[Elecraft] OT: Grounding Question
Wes Stewart
wes_n7ws at triconet.org
Wed Apr 25 21:45:39 EDT 2018
Radio Engineering and Radio Engineer's Handbook are two different critters. My
copy of Radio Engineering is the third edition and the pertinent information is
on p.20.
To partially quote: "Thus, with a flat-strip conductor, the current flows
primarily along the edges."
On 4/25/2018 11:34 AM, Josh wrote:
> You're going to have to explain that to a whole lot of high current flat wound inductors & transformers.
>
> What are you referencing? The only Terman I have handy is Radio Engineer's Handbook.
>
> 73
> Josh W6XU
>
> Sent from my mobile device
>
>> On Apr 25, 2018, at 11:17 AM, hawley, charles j jr <c-hawley at illinois.edu> wrote:
>>
>> RF does not flow on the entire surface of flat copper tape (Electronic and Radio Engineering by Frederick E. Terman 4th Edition, p 22). The RF current only flows on the outside edges of the strip, not on the middle outside surfaces. Think of looking at the end of a longitudinal slice out of a solid copper rod.
>>
>> Chuck KE9UW
>> c-hawley at illinois.edu
>>
>> Sent from my iPad
>>
>>> On Apr 25, 2018, at 12:32 PM, Fred Jensen <k6dgw at foothill.net> wrote:
>>>
>>> Sounds like you're following the rules. You might consider flat copper tape instead of wire for bonding. Lightning is an RF event and currents will be confined to the outside surfaces of the conductors. Consequently, the surface area rather than volume of the conductor is what matters most. The conductors on one of the original transmission lines from Hoover Dam to Los Angeles were hollow.
>>>
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