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Author Topic: 5V PSU for QRP Labs Ultimate 3S?  (Read 3340 times)
N4SRN
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Posts: 308




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« on: June 11, 2016, 04:15:36 PM »

I'm looking for a 5V PSU to run a QRP Labs Ultimate 3S unit, which will be used to run WSPR on six HF bands. As a novice, I'm always looking for advice. At the novice level, I might buy a built unit, or build a kit, but homebrew is well beyond my capacity yet. Thanks!

Bret/KC1CJN
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Bret/N4SRN
Bedford, NH  USA
KJ8U
Member

Posts: 2




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« Reply #1 on: June 13, 2016, 06:00:24 AM »

There are multiple kits you can buy that will provide 5V for the 3S.   This is the one I use  http://vakits.com/solderless-breadboard-5v-power-supply-kit-2072  $7, can't beat the price. Build it, and connect to your PS.

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AE5X
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Posts: 1101




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« Reply #2 on: June 13, 2016, 08:09:16 AM »

Or if a 120VAC input is more convenient:
https://www.amazon.com/iMBAPrice%C2%AE-5V-Wall-Power-Adapter/dp/B00GUO5WUI
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K0BT
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Posts: 367




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« Reply #3 on: June 13, 2016, 02:06:02 PM »

Your local Goodwill store may have a few 5V wall warts on their wall for a buck or so each.
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KJ8U
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Posts: 2




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« Reply #4 on: June 13, 2016, 02:37:24 PM »

I thought of mentioning that, but those things are so damn noisy.  Nothing though, that a toroid wouldn't solve.
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N4SRN
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Posts: 308




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« Reply #5 on: June 13, 2016, 03:19:27 PM »

A lot of good ideas - many thanks!

I am, as I noted, pretty limited in the homebrew category, so it has to be off-the-shelf pre-built or kits & instructions. So saying to add a kit and "add a SNTP with some caps and toroids" leaves me dangling. I pretty much need a 110V wall outlet to U3S solution.

I'm sure it's hard to remember when you didn't know much of anything, but I'm at that stage... I'll learn, but in stages.
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Bret/N4SRN
Bedford, NH  USA
KJ8U
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Posts: 2




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« Reply #6 on: June 14, 2016, 05:41:04 AM »

A wall wart will just fine for the 3S. Good luck and have fun with 3S.
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JS6TMW
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Posts: 1204




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« Reply #7 on: June 14, 2016, 07:09:03 AM »

Seems like 5-volt wall warts just keep having babies around here. Most have USB sockets but that is an easy problem. If you get one that's noisy (I've never had one), throw it in the nearest recycling can. I sure wouldn't spend any money on one....

Steve

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