[Amps] Power Factor correction

[John G3UUT]

I'm mainly interested in this subject because I like operating portable 
with my Honda Eu2000i  (about 2 kVA) generator.  This is an excellent 
generator, I can lift it without giving myself a hernia and being of the 
invertor type it has excellent regulation and a perfect sinewave.  The 
problem is that I can hardly get 300 W out of my GS35B 6m amp which uses 
a large toroidal B+ transformer before the generator objects, A GS31B 6m 
amp with a smaller toroid actually gives more output and my L4B does 
much better (into a dummy load) on the HF bands .  The high peak current 
due to the rectifiers clearly upsets the generator but it's interesting 
that the transformer design also has a significant effect.  I've now 
actually come to the conclusion that the best answer to this is going to 
be a solid state amp with a PF corrected PSU.  However you have to be 
careful as some of the current commercial SS amps still have linear PSUs 
e.g. Tokyo Hy-Power and Beko.

I'm still don't understand the EU PF specs - Peter thanks for the 
document which tries to simplify this, I've read it three times and it 
seems to contradict itself and I'm not much wiser.  I'm really glad that 
I don't have to read these EN specs for a living.

73 John G3UUT

On 08/03/2013 21:51, Carl wrote:
> So install a power factor correction cap at the mains panel.
>
> Carl
> KM1H
>
>
>
>
> ----- Original Message ----- From: "Roger" <sub1 at rogerhalstead.com>
> To: <amps at contesting.com>
> Sent: Friday, March 08, 2013 11:23 AM
> Subject: Re: [Amps] Freescale LDMOS devices
>
>
>>
>> Curiosity, as this is something most hams are unaware of, or 
>> concerned about power factor.
>>
>> In practical terms just what does that mean to a QRO operator? Yes, I 
>> know it makes the load appear larger than it actually is and if you 
>> draw enough load it can be noticed by the power company.  Still, no 
>> one here in the states complains whether you draw 1 KW, or 15 with 
>> your station.
>>
>> I've never heard of a commercial ham amp with power factor 
>> correction. Do they exist?
>> So other than a bit of unneeded increase in your bill, what is the 
>> problem where the single station is concerned "here in the states"?
>>
>> 73
>>
>> Roger  (K8RI)
>>
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