Hi all!
Very nice and useful discussion! Great!
Can anybody tell experience about the Antec SMPSs.
Thank you all and kind regards,
73
SG/VU3TKG
On Wed, Jul 24, 2013 at 8:49 AM, Tom W8JI w...@w8ji.com wrote:
Sorry I identified Corcom incorrectly.
I checked a sample and the actual filters that I
On 7/21/2013 8:49 AM, Tom W8JI wrote:
I can't understand why throwing some ferrite beads at a problem, or
changing the supply, are the only two solutions.
Many times, if not most times, a few .01 uF line voltage rated bypass
capacitors are significantly better than a sting of cores, or a
I simply purchased 10 Corcom filters on ebay ( I think they were $2 each +
shipping). I cut a power supply cord (universal plug type) about 6 inches
from the computer and wired the filter into a plastic electrical box with
the other end of the cord out the other end of the box. I used standard
] On Behalf Of Tom W8JI
Sent: Tuesday, July 23, 2013 3:42 PM
To: topband@contesting.com
Subject: Re: Topband: Desktop Power Supply Brand/Noise Question
I simply purchased 10 Corcom filters on ebay ( I think they were $2
each + shipping). I cut a power supply cord (universal plug type)
about 6
Sorry I identified Corcom incorrectly.
I checked a sample and the actual filters that I used were Delta
Electronics 05DRCG5.
http://c1170156.r56.cf3.rackcdn.com/UK_DEL_05DRDG3_DS.pdf
That's better. That is a filter that suppresses CM and DM signals via
capacitors, but it still looks like
Another couple of points.
About 10 years ago, at a local ham-fest, there was a guy selling brand
new Lambda power supplies. They were adjustable from 10-15 V and he had
models ranging from 20-50 amps. They were switching supplies.
I couldn't pass these up and bought 7 or 8 of them. They
I ended up wiring in some CorCom line filters that I had around the house
and it completely removed the noise. I've used these supplies for years
including being used on a number of different DX-peditionsthey are
light and fairly small. This fix worked just great.
I can't understand why
On 7/21/2013 8:49 AM, Tom W8JI wrote:
I can't understand why throwing some ferrite beads at a problem, or
changing the supply, are the only two solutions.
Many times, if not most times, a few .01 uF line voltage rated bypass
capacitors are significantly better than a sting of cores, or a
On 7/21/2013 8:49 AM, Tom W8JI wrote:
I can't understand why throwing some ferrite beads at a problem, or
changing the supply, are the only two solutions.
Many times, if not most times, a few .01 uF line voltage rated bypass
capacitors are significantly better than a sting of cores, or a
On 7/21/2013 4:52 PM, Tom W8JI wrote:
Bypass capacitors will cure common mode also, because common mode
cannot be generated without differential mode someplace in the system
between two points.
But you're re-engineering someone else's design, without knowledge of
all the issues.That's a
, July 21, 2013 08:37 PM
To: topband@contesting.com topband@contesting.com
Subject: Re: Topband: Desktop Power Supply Brand/Noise Question
On 7/21/2013 4:52 PM, Tom W8JI wrote:
Bypass capacitors will cure common mode also, because common mode
cannot be generated without differential mode
On 07/21/2013 08:37 PM, Jim Brown wrote:
But you're re-engineering someone else's design, without knowledge of
all the issues.That's a questionable practice unless you're a circuit
designer -- it's easy to open a can of worms. Few hams are qualified
to do that, and I would be the last to
: Desktop Power Supply Brand/Noise Question
On 07/21/2013 08:37 PM, Jim Brown wrote:
But you're re-engineering someone else's design, without knowledge of all the
issues.That's a questionable practice unless you're a circuit designer --
it's easy to open a can of worms. Few hams
Hello to the group.I recently built an AMD quadcore machine I intend to
eventually replace my trusty XP Pro machines.
Foolishly got in a hurry to complete the build and purchased a PS from a local
shop.It supplies the power required without issue, I have discovered why the
price was so good.Jim
On 7/20/2013 7:27 AM, Clay Melhorn wrote:
Looking at another good deal how do the COOLER MASTER PS's rate for RFC
filteringor are there others brand I should be looking at?
For about ten years, my computers have been T4x-series Thinkpads, and
they have been pretty RF-quiet. Before that, I
As nothing remains on the market long before it's replaced, my PS
from two years ago has been superseded. Mine is a PC Power Cooling
Silencer 760W. Were I to get one today I would choose their 950 watt
version
http://www.newegg.com/Product/Product.aspx?Item=N82E16817703028
The reason I like
On 07/20/2013 11:55 AM, Gary Smith wrote:
As nothing remains on the market long before it's replaced, my PS
from two years ago has been superseded. Mine is a PC Power Cooling
Silencer 760W. Were I to get one today I would choose their 950 watt
version
Hi Clay,
One thing you might want to check.
See if you can get inside the power supply...disconnect it first. Take a
look on the PCB near the power connector. There may be a space on the
PCB where you can install a power line filtersomething like a CorCom
or similar. Sometimes they
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