[Boatanchors] Power Cord size

[Rob Atkinson]

okay, i guess i have oversimplified it.  i merely thought that if you
have a fixed amount of power input and the efficiency of the circuit
remains the same, then a higher service voltage level would mean a
reduced current demand.  no more than that.  I don't know from Z on
windings and all that.

73

Rob
K5UJ

On Mon, Jan 23, 2012 at 9:07 PM, W2HX <w2hx at w2hx.com> wrote:
> So was I. I was assuming (could be problematic!) that if the impedance
> behind the secondary of transformer was relatively fixed, then the impedance
> in front of the transformer (primary) should also be fixed (albeit
> transformed based one the ratio of turns).  Higher V on the primary should
> result in higher I, no?
>
> Of course, if for some reason, a higher V on the primary (and thus
> secondary) somehow caused a change in the impedance of all the circuitry
> behind the secondary, then all bets would be off.
>
> 73 Eugene W2HX
>
>
> -----Original Message-----
> From: Rob Atkinson [mailto:ranchorobbo at gmail.com]
> Sent: Monday, January 23, 2012 8:08 PM
> To: Eugene Hertz
> Cc: boatanchors at mailman.qth.net
> Subject: Re: [Boatanchors] Power Cord size
>
> Hi, I think we're talking about the AC service current demand on the
> 115 v. line.
>
> Rob
> K5UJ
>
> On Mon, Jan 23, 2012 at 3:17 PM, W2HX <w2hx at w2hx.com> wrote:
>> I would think that the impedance of the transformer and everything
>> behind it would be fixed. Therefore, a higher V creates a higher I. No?
>>
>>
>> 73 Eugene W2HX
>>
>>
>> -----Original Message-----
>> From: boatanchors-bounces at mailman.qth.net
>> [mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of Rob Atkinson
>> Sent: Monday, January 23, 2012 1:06 PM
>> To: boatanchors at mailman.qth.net
>> Subject: Re: [Boatanchors] Power Cord size
>>
>> I would think the current would be a little bit lower.
>>
>> If you run an old Hallli amp designed for 115 on 125 study the
>> filament setup--I don't know that tube but it might wind up with high fil.
> v.
>>
>> rob
>> K5UJ
>>
>>
>> On Sun, Jan 22, 2012 at 9:04 PM, Jim Haynes <jhhaynes at earthlink.net>
> wrote:
>> And the current might be higher with the line voltage actually being
>> 125 or so.
>> ______________________________________________________________
>> Boatanchors mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Boatanchors at mailman.qth.net
>>
>> List Administrator: Duane Fischer, W8DBF
>> ** For Assistance: dfischer at usol.com **
>>
>>
>> This list hosted by: http://www.qsl.net Please help support this email
>> list: http://www.qsl.net/donate.html
>>
>>
>
>