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12 Volt DC Bench Power Supply

 
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mcculleyja(at)starpower.n
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PostPosted: Fri Feb 03, 2006 6:52 pm    Post subject: 12 Volt DC Bench Power Supply Reply with quote

Can someone recommend a source/model of bench power supply using 110V AC
input with 12V DC output, capable of up to 15 amps DC? Thanks,

Jim McCulley


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flyboy.bob(at)gmail.com
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PostPosted: Fri Feb 03, 2006 7:08 pm    Post subject: 12 Volt DC Bench Power Supply Reply with quote

I've been using a MFJ-4225 MV with good results . . . it's a switching
power supply . . . available from most armature radio stores. Astron
also make nice power supplies but there more money.

He the MFJ site / Pwr Supply
http://www.mfjenterprises.com/products.php?prodid=MFJ-4225MV

Good Luck,
Bob is SE Iowa
On 2/3/06, J. Mcculley <mcculleyja(at)starpower.net> wrote:
Quote:


Can someone recommend a source/model of bench power supply using 110V AC
input with 12V DC output, capable of up to 15 amps DC? Thanks,

Jim McCulley





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nuckollsr(at)cox.net
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PostPosted: Fri Feb 03, 2006 8:18 pm    Post subject: 12 Volt DC Bench Power Supply Reply with quote

At 09:50 PM 2/3/2006 -0500, you wrote:

Quote:

<mcculleyja(at)starpower.net>

Can someone recommend a source/model of bench power supply using 110V AC
input with 12V DC output, capable of up to 15 amps DC? Thanks,

Jim McCulley

Do you really want 12v . . . or are you interested in
simulating an operating vehicle? 13.8v is a nominal bench
supply setting for emulating bus voltage. Here's a supply
I used to sell until they got so cheap that the margins
didn't fit my business model any more . . .
http://www.radiodan.com/misc/samlex1223.htm

http://www.universal-radio.com/catalog/hamps/3747.html

http://www.aaradio.com/cartfile/misc%20html/samlex.html
Bob . . .


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harvey4(at)earthlink.net
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PostPosted: Sat Feb 04, 2006 6:21 am    Post subject: 12 Volt DC Bench Power Supply Reply with quote

Jim.....by coincidence, yesterday I was closing a Nextel store (they
merged with Sprint and don't need two retail stores so close
together) and in the course of clearing out the "back room" I found
about 5 bench power supplies. I took one for myself and gave one to a
builder friend who I saw last evening. I'm pretty sure the others are
in the "pile" that resulted. Later today I'll go thorough and see if
I can find them. If I can, you're welcome to one.

I'll mail you later and let you know what I find.

Neil
At 09:50 PM 2/3/2006, you wrote:

Quote:

<mcculleyja(at)starpower.net>

Can someone recommend a source/model of bench power supply using 110V AC
input with 12V DC output, capable of up to 15 amps DC? Thanks,

Jim McCulley

--

--


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jschroeder(at)perigee.net
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PostPosted: Sat Feb 04, 2006 3:48 pm    Post subject: 12 Volt DC Bench Power Supply Reply with quote

Check the archives. There have been numerous postings on this.

Cheers,

John Schroeder
On Fri, 03 Feb 2006 21:50:15 -0500, J. Mcculley <mcculleyja(at)starpower.net>
wrote:

Quote:

<mcculleyja(at)starpower.net>

Can someone recommend a source/model of bench power supply using 110V AC
input with 12V DC output, capable of up to 15 amps DC? Thanks,

Jim McCulley



--


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Mark Phillips in TN



Joined: 10 Jan 2006
Posts: 431
Location: Columbia, TN

PostPosted: Sat Feb 04, 2006 3:55 pm    Post subject: 12 Volt DC Bench Power Supply Reply with quote

In a message dated 02/03/2006 10:20:21 PM Central Standard Time,
nuckollsr(at)cox.net writes:
Quote:
Can someone recommend a source/model of bench power supply using 110V AC
input with 12V DC output, capable of up to 15 amps DC?
>>

Might want to look at this 13.8, 20 amp supply:

http://mpja.com/productview.asp?product=5386+PS

They also have cheaper ones at 10 and 4 amp output at 13.8 VDC. I've bought
stuff from these folks a number of times and never been dissapointed. I
bought a 12 VDC supply from them for about $50 IIRC, and used it for a lot of my
initial tryout on all kinds of stuff and it worked just fine...

Quote:
From The PossumWorks in TN
Mark Phillips RV-6A N51PW


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Wngsfrmhvn(at)aol.com
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PostPosted: Sun Feb 05, 2006 9:08 pm    Post subject: 12 Volt DC Bench Power Supply Reply with quote

My first post to any list, so hope it works.

I picked up a computer power supply a while back on a whim. 550 watt Antec,
says it will deliver 24A at 12V, 40A at 5V, and 32A at 3.3V. Don't know if
it goes to 13.8 or whether it's even suitable for benchtop use. It was $100
on eBay some time ago, prob not the best deal goin but...

Any feedback is appreciated.

Do not archive.

Gus Coleman
RV-8 empennage


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brian



Joined: 02 Jan 2006
Posts: 643
Location: Sacramento, California, USA

PostPosted: Sun Feb 05, 2006 9:28 pm    Post subject: 12 Volt DC Bench Power Supply Reply with quote

Wngsfrmhvn(at)aol.com wrote:
Quote:


My first post to any list, so hope it works.

I picked up a computer power supply a while back on a whim. 550 watt Antec,
says it will deliver 24A at 12V, 40A at 5V, and 32A at 3.3V. Don't know if
it goes to 13.8 or whether it's even suitable for benchtop use. It was $100
on eBay some time ago, prob not the best deal goin but...

You can use computer supplies but many of them have minimum loads for
all three voltages for them to work properly. That means you have to
draw some current from the 5V and 3.3V outputs in order for the 12V
output to work properly.

And, no, there usually isn't an adjustment that will let you crank up
the voltage to 13.8V.

I have an old Astron 35A linear supply with variable voltage and current
limit. It works wonderfully for this kind of work. You set the current
limit just above what you expect to need and any accidental
short-circuit is protected by the supply's current limit.

--
Brian Lloyd 361 Catterline Way
brian-yak at lloyd dot com Folsom, CA 95630
+1.916.367.2131 (voice) +1.270.912.0788 (fax)

I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery


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_________________
Brian Lloyd
brian-yak at lloyd dot com
+1.916.367.2131 (voice) +1.270.912.0788 (fax)

I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery
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william.p.dube(at)noaa.go
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PostPosted: Mon Feb 06, 2006 3:12 pm    Post subject: 12 Volt DC Bench Power Supply Reply with quote

I use a Toshiba laptop power supply. I put clup leads on it. It delivers
15 volts (at) 2 amps (good for charging batteries). I put a power doide in
series with it to get 14.3 volts. (Just like the alternator with a full
battery.)

Brian Lloyd wrote:

Quote:


Wngsfrmhvn(at)aol.com wrote:


>
>
>My first post to any list, so hope it works.
>
>I picked up a computer power supply a while back on a whim. 550 watt Antec,
>says it will deliver 24A at 12V, 40A at 5V, and 32A at 3.3V. Don't know if
>it goes to 13.8 or whether it's even suitable for benchtop use. It was $100
>on eBay some time ago, prob not the best deal goin but...
>
>

You can use computer supplies but many of them have minimum loads for
all three voltages for them to work properly. That means you have to
draw some current from the 5V and 3.3V outputs in order for the 12V
output to work properly.

And, no, there usually isn't an adjustment that will let you crank up
the voltage to 13.8V.

I have an old Astron 35A linear supply with variable voltage and current
limit. It works wonderfully for this kind of work. You set the current
limit just above what you expect to need and any accidental
short-circuit is protected by the supply's current limit.





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william.p.dube(at)noaa.go
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PostPosted: Mon Feb 06, 2006 3:19 pm    Post subject: 12 Volt DC Bench Power Supply Reply with quote

Didn't realise you needed big amps.

Iota is probably the most amps for the buck. You can switch it between
14.2 for charging and 13.8 for "float".

Here is a listing: http://www.oksolar.com/battery_chargers/
Robert L. Nuckolls, III wrote:

Quote:


At 09:50 PM 2/3/2006 -0500, you wrote:



>
><mcculleyja(at)starpower.net>
>
>Can someone recommend a source/model of bench power supply using 110V AC
>input with 12V DC output, capable of up to 15 amps DC? Thanks,
>
>Jim McCulley
>
>

Do you really want 12v . . . or are you interested in
simulating an operating vehicle? 13.8v is a nominal bench
supply setting for emulating bus voltage. Here's a supply
I used to sell until they got so cheap that the margins
didn't fit my business model any more . . .
http://www.radiodan.com/misc/samlex1223.htm

http://www.universal-radio.com/catalog/hamps/3747.html

http://www.aaradio.com/cartfile/misc%20html/samlex.html
Bob . . .










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PLaurence(at)the-beach.ne
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PostPosted: Tue Feb 07, 2006 5:53 pm    Post subject: 12 Volt DC Bench Power Supply Reply with quote

In a message dated 02/03/2006 10:20:21 PM Central Standard Time,
nuckollsr(at)cox.net writes:
Quote:
Can someone recommend a source/model of bench power supply using 110V AC
input with 12V DC output, capable of up to 15 amps DC?
>>

Might want to look at this 13.8, 20 amp supply:

http://mpja.com/productview.asp?product=5386+PS
Quote:
From The PossumWorks in TN
Mark Phillips RV-6A N51PW


Or try http://www.web-tronics.com/25ampswitpow.html 25 amps, 13.8 v for
$99.00 Hard to beat!
Peter Laurence


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