[Elecraft] Fw: K3 Suddenly died

Charlie T, K3ICH pincon at erols.com
Mon Oct 7 14:43:39 EDT 2013



What is most amazing about this thread is that two sides can state the exact
same thing, but find fault with and argue with the other.. (???)
It's bordering on comical.
>
> 73, Charlie k3ICH
>
>
> ----- Original Message ----- 
> From: "Walter Underwood" <wunder at wunderwood.org>
> To: "Richard Fjeld" <rpfjeld at embarqmail.com>
> Cc: "Elecraft Reflector" <elecraft at mailman.qth.net>
> Sent: Monday, October 07, 2013 12:26 PM
> Subject: Re: [Elecraft] K3 Suddenly died
>
>
>> Of course. My point was "for a given current", so 20A at 120V and 20A at 
>> 13.8V.  --wunder, K6WRU
>>
>> On Oct 7, 2013, at 9:03 AM, Richard Fjeld wrote:
>>
>>> I stated the voltage drop across a resistance (the wire conductor) is 
>>> directly proportional to the amount of current flow (amperage) through 
>>> it.
>>>
>>> For a given resistance, as the current increases through it, the voltage 
>>> drop increases in it.
>>>
>>> Changing the supply voltage will change the current flow through the 
>>> same conductor resistance and affect the voltage drop in it.
>>>
>>>
>>>
>>> -----Original Message----- From: Walter Underwood
>>> Sent: Monday, October 07, 2013 10:20 AM
>>> To: Elecraft Reflector
>>> Subject: Re: [Elecraft] K3 Suddenly died
>>>
>>> There is a point which could be made -- the percentage voltage drop is 
>>> bigger at 12V than at 120V.
>>>
>>> If the voltage drop on your power supply wire is 2V for a given current, 
>>> that is the same regardless of the supply voltage. With a 120V supply, 
>>> the wire will deliver 118V and with 13.8V it will deliver 11.8V.
>>>
>>> So the same voltage drop can matter more at lower supply voltages.
>>>
>>> Note that I'm ignoring the difference between AC and DC and skin effect.
>>>
>>> wunder
>>> K6WRU
>>>
>>
>>
>>
>>
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