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Author Topic: Recommend a QUIET 12v power supply?  (Read 16056 times)
W2BCD
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Posts: 32




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« on: July 08, 2014, 06:08:26 PM »

Change of plans, I'm bringing my Yasue 7900r from out of my truck and putting it inside as my base station. Problem is now obviously without a a/c wall transformer I need a 12v power supply again. I had a Pyramid PSV-300 HD but it was very loud. Granted it was very close to me, and I could run much longer powercables from the radio now that its gettin pulled from my truck and already has a pretty good lead length... I'd still like quieter from the start... and saves me from having to get up and turn the power on and off every time I wanna listen in. Or even better, is there a powersupply out there that wont run its fan when theres no load, and I can just leave it plugged in and on? thanks all!
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KE4DRN
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Posts: 3728




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« Reply #1 on: July 08, 2014, 06:55:02 PM »

Hi,

Astron linear supplies no fan inside, new or used work great.

73 james
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G4CMY
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Posts: 14




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« Reply #2 on: July 09, 2014, 02:59:30 AM »

I had the same problem and I foound the Watson POWER-MAX-45-NF this has a thermostically controlled fan.

I leave the PSU running all the time and only hear it when I start drawing an appreciable amount of current.

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W2BCD
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Posts: 32




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« Reply #3 on: July 09, 2014, 06:48:53 AM »

Thanks! Can't seem to find that one anywhere in the States, but the Astron RS-20A might just do the trick!
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SWMAN
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Posts: 571




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« Reply #4 on: July 09, 2014, 09:26:33 AM »

I use an Astron SS-30M and never really hear the fan at all, good little power supply.
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VE7DQ
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Posts: 176




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« Reply #5 on: July 09, 2014, 04:46:42 PM »

Here ya go.... absolutely silent.  Has a fan, but I'm yet to hear it turn on.

http://www.powerwerx.com/power-supplies/powerwerx-30-amp-desktop-switching-power-supply-powerpoles.html

Recommended.
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W2BLC
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Posts: 52


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« Reply #6 on: July 09, 2014, 05:47:58 PM »

35 amp Astron with meters. Mine has been running since 1986, except for vacations, is dead silent. Quality of analog Astron supplies is measured by their weight.

Bill W2BLC
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KD8IIC
Member

Posts: 159




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« Reply #7 on: July 10, 2014, 02:26:54 AM »

 I have several Samelex supplies. Quiet fan and trouble free. Low cost. Does regulate better than my Astron 35 as well on CW.
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WI4P
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Posts: 45




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« Reply #8 on: July 10, 2014, 11:41:23 AM »

I second the Samlex suggestion.  Mine has worked quietly and flawlessly since Jan 2011.
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KD0SFY
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Posts: 360




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« Reply #9 on: July 10, 2014, 12:31:14 PM »

My 30 Amp Samlex rarely makes any noise and I leave it on 24/7 with my APRS IGate.  Even when the fan kicks on it is very quiet. 
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KA4AQM
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Posts: 56




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« Reply #10 on: July 12, 2014, 02:23:09 PM »

A-S-T-R-O-N-....period.
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KE7TMA
Member

Posts: 471




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« Reply #11 on: July 14, 2014, 04:13:01 PM »

Change of plans, I'm bringing my Yasue 7900r from out of my truck and putting it inside as my base station. Problem is now obviously without a a/c wall transformer I need a 12v power supply again. I had a Pyramid PSV-300 HD but it was very loud. Granted it was very close to me, and I could run much longer powercables from the radio now that its gettin pulled from my truck and already has a pretty good lead length... I'd still like quieter from the start... and saves me from having to get up and turn the power on and off every time I wanna listen in. Or even better, is there a powersupply out there that wont run its fan when theres no load, and I can just leave it plugged in and on? thanks all!

Get a 12v SLA and charge it when you aren't operating.  I doubt any power supply can do better noise wise.
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NO2A
Member

Posts: 800




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« Reply #12 on: July 20, 2014, 08:21:39 AM »

A-S-T-R-O-N-....period.
Well put... Wink
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