..if already talking about this subject, I have another question that'll
pour oil on the fire:
Years ago there were in use Cuproxide rectifiers, which consisted of a small
disk of copper, with an oxide layer built up on one side. When connections
were made to the oxide layer on one side and the bare copper on the other
side, a rectification effect took place, as long as the above voltage was
above a few volts and up.
Did anybody notice effects of this kind (diode effects) with corroded tank
circuits? Or is this only my paranoia?
Alex 4Z5KS
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
Behalf Of Steve Thompson
Sent: Thursday, April 09, 2009 10:53 PM
To: amps@contesting.com
Subject: Re: [Amps] Silver plating
From many years ago I recall an article in 'RF Design' where
someone suggested that oxidation on copper (and other conductors)
makes less difference than might be expected because the higher
resistance in the oxide causes the current to flow deeper where
the conductivity is higher.
Steve
> ORIGINAL MESSAGE:
>
> On Wed, 8 Apr 2009 23:36:02 -0700, "Dennis Watkins"
> <andromeda@wildblue.net> wrote:
>
>>I doubt cleaning the tank will change the circulating current much..
>>
>>D
>
> REPLY:
>
> Agreed, I don't think cleaning would change it at all. What it would
> change is the I-squared-R loss due to copper oxide. I made a mental
> note of the DC input vs RF output and if I see a reduction, I will try
> cleaning the coils and see what happens. The gist of the replies to my
> question is I won't see much change.
>
> 73, Bill W6WRT
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