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Re: [CQ-Contest] Switching Power Supplies

To: cq-contest@contesting.com
Subject: Re: [CQ-Contest] Switching Power Supplies
From: Ed Goss <ed.n3cw@gmail.com>
Date: Tue, 12 Nov 2024 15:59:07 -0500
List-post: <mailto:cq-contest@contesting.com>
OK let's try again.

2009:

https://www.centralmiarc.com/docs/Reviews/dj175t.pdf

and 2020:

https://www.reddit.com/r/amateurradio/comments/j25i1q/qst_oct2020_four_power_supplies_tested_only_yaesu/

--Ed, N3CW--



Message: 2
Date: Mon, 11 Nov 2024 20:35:14 -0500
From: Charles Gallo <charlie@thegallos.com>
To: cq-contest@contesting.com
Subject: Re: [CQ-Contest] Switching Power Supplies
Message-ID: <678EC18A-4FA0-4953-A56F-E2B12C8D0645@thegallos.com>
Content-Type: text/plain; charset=utf-8

No,
My comment was more along the lines that in the quarter century since that 
article, I?m sure there are many new models of supply, that it is entirely 
possible that internally models have changed. It was really really great 
information on what existed 25 years ago, but how good is it on what exists 
today?

Reading a lot of the EE trade bags, particularly over say the last 4-5 years, 
EMI/RFI has become a big topic for switching power supply folks, and the chip 
makers that now make chips specifically for power supplies have done work to 
help eliminate some of the issues, and heck, even the printed circuit board 
design software folks are putting in features to help eliminate the issues.

So yes, great article on what was the state of the ham radio industry at the 
turn of the century, but how much it reflects today is up for debate
--
73 de KG2V
Charlie

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