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12 Volt DC Bench Power Supply

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mcculleyja(at)starpower.n
Guest

Posted: Fri Feb 03, 2006 6:52 pm Post subject: 12 Volt DC Bench Power Supply

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

flyboy.bob(at)gmail.com
Guest

Posted: Fri Feb 03, 2006 7:08 pm Post subject: 12 Volt DC Bench Power Supply

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

nuckollsr(at)cox.net
Guest

Posted: Fri Feb 03, 2006 8:18 pm Post subject: 12 Volt DC Bench Power Supply

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 . . .

harvey4(at)earthlink.net
Guest

Posted: Sat Feb 04, 2006 6:21 am Post subject: 12 Volt DC Bench Power Supply

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



--


	


--

jschroeder(at)perigee.net
Guest

Posted: Sat Feb 04, 2006 3:48 pm Post subject: 12 Volt DC Bench Power Supply

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






	


--

Mark Phillips in TN

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

Posted: Sat Feb 04, 2006 3:55 pm Post subject: 12 Volt DC Bench Power Supply

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

_________________
From The PossumWorks...

Wngsfrmhvn(at)aol.com
Guest

Posted: Sun Feb 05, 2006 9:08 pm Post subject: 12 Volt DC Bench Power Supply

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

brian

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

Posted: Sun Feb 05, 2006 9:28 pm Post subject: 12 Volt DC Bench Power Supply

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

_________________
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

william.p.dube(at)noaa.go
Guest

Posted: Mon Feb 06, 2006 3:12 pm Post subject: 12 Volt DC Bench Power Supply

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.

william.p.dube(at)noaa.go
Guest

Posted: Mon Feb 06, 2006 3:19 pm Post subject: 12 Volt DC Bench Power Supply

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 . . .

PLaurence(at)the-beach.ne
Guest

Posted: Tue Feb 07, 2006 5:53 pm Post subject: 12 Volt DC Bench Power Supply

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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