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@rogerhalstead.com>
To: <amps@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)
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 10.0.1430 / Virus Database: 2641/5654 - Release Date: 03/07/13
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|