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All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> PC Power Supply (Help)
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PC Power Supply (Help) - 7/18/2003 11:03:49 PM   
simon109


 

Posts: 54
Joined: 7/15/2003
From: FarnhamSurrey, UNITED KINGDOM
Status: offline 		I went to that link regarding PC power supply http://www.marcee.org/Articles/PCPowerSupply.htm
In there it says to either connect the Power Good to a +5v or connect the PS on to a comman tried both of these even together fan still don't work think I have broken the PS somewhere as it worked earlier until I cut the wires I wasn't using maybe its something to do with that. Will try and get another PS and start again. Another it say connect 2 or 3 of the +12v and the negatives, didnt do this early but it work ?

(in reply to simon109)
       Post #: 26

PC Power Supply (Help) - 7/21/2003 2:30:38 AM   
woopie


 

Posts: 88
Joined: 8/24/2002
From: Clarksburg, NJ, USA
Status: offline 		[QUOTE]Originally posted by simon109
I went to that link regarding PC power supply http://www.marcee.org/Articles/PCPowerSupply.htm
In there it says to either connect the Power Good to a +5v or connect the PS on to a comman tried both of these even together fan still don't work think I have broken the PS somewhere as it worked earlier until I cut the wires I wasn't using maybe its something to do with that. Will try and get another PS and start again. Another it say connect 2 or 3 of the +12v and the negatives, didnt do this early but it work ? [/QUOTE]

Had the same problem when I cut off the 20 pin plug without really looking at it more closely. If you still have the cut off plug you will see two wires crimped on one pin (pin 11) A brown wire and an orange wire. If you have the "marcee info" you will see a chart showing this on the last page.

I load my 5V, red wire with 2, 1156 light bulbs in parallel for a 12.5VDC reading on the yellow and blackwires. Handles my Kokam 402 charger.

(in reply to simon109)
       Post #: 27

PC Power Supply (Help) - 7/21/2003 3:23:08 AM   
simon109


 

Posts: 54
Joined: 7/15/2003
From: FarnhamSurrey, UNITED KINGDOM
Status: offline 		Cheers whoopie,

I will connect the orange and brown back together see if it works, hopefully I haven't cut the wires too short

(in reply to simon109)
       Post #: 28

PC Power Supply (Help) - 7/22/2003 12:13:47 AM   
simon109


 

Posts: 54
Joined: 7/15/2003
From: FarnhamSurrey, UNITED KINGDOM
Status: offline 		It worked woopie thanks, only getting 11.35v though using the 10watt 10ohm resister might try some bulbs on there.

(in reply to simon109)
       Post #: 29

PC Power Supply (Help) - 7/22/2003 3:10:15 AM   
woopie


 

Posts: 88
Joined: 8/24/2002
From: Clarksburg, NJ, USA
Status: offline 		[QUOTE]Originally posted by simon109
It worked woopie thanks, only getting 11.35v though using the 10watt 10ohm resister might try some bulbs on there. [/QUOTE]


Do a search in "batteries & chargers" for "PC POWER SUPPLIES".
There is lots of info. I think you'll find 10 watts is not enough unless you've got cooling for the resistor. Some are using the PS fan to cool their resistors, but I didn't want to blow additional hot air into the PS. I chose the 2, 1156, 12V lamps because they were just easier for me and provide a 1 ohm load. As I mentioned, the bulbs are in parallel; with one bulb my 12V line without load, reads 12.05V, with 2 bulbs it reads 12.09V. Without the bulbs, my PS read 11.86.

You can get sockets for the bulbs at auto parts stores.

I'm no expert on this. I'm very thankful for all the help rcuniverse provided.

(in reply to simon109)
       Post #: 30

PC Power Supply (Help) - 7/22/2003 3:55:13 AM   
Johng



Posts: 1821
Joined: 1/24/2002
From: Deland, FL, USA
Status: offline 		If you can find a 400W - 450W power supply, it will give you 15A or more on the 12v circuit. Plenty for almost anything you want to do, including hot-wire. THose are around 50-60 US$ new.

_____________________________

John

(in reply to simon109)
       Post #: 31

PC Power Supply (Help) - 7/22/2003 4:01:37 AM   
simon109


 

Posts: 54
Joined: 7/15/2003
From: FarnhamSurrey, UNITED KINGDOM
Status: offline 		Thanks to all who's help me on this going to get a couple of bulbs to put on see what happens, also keep my eye out for a secound hand PC power supply with a higher rating.

Cheers All

Simon.

(in reply to simon109)
       Post #: 32

RE: PC Power Supply (Help) - 12/15/2003 5:58:22 AM   
benliu


 

Posts: 24
Joined: 10/15/2003
From: WOODSTOCK, MD, USA
Status: offline 		Hello Guys,
I just took two leads (+12V & GND) out from a old PC of mine and use them as a power source for the E-Flite Pinacle Peak charger. I ususally set the charging current to below 2A (<1000mAh batteries). Is this configuration OK and safe?? I think I don't have to worry about connecting a load to the 5v terminals because other components of my computer are still hook up, right?

Thanks,
Ben

(in reply to woopie)
       Post #: 33

RE: PC Power Supply (Help) - 12/15/2003 2:50:26 PM   
woopie


 

Posts: 88
Joined: 8/24/2002
From: Clarksburg, NJ, USA
Status: offline 		Ben,

If your measured voltage on the 12V DC wires is above 12V, your 5V DC is probably loaded OK.
Depending on your Amp. draw from the power supply, use 2, or 3 of each of the 12V plus and minus wires to carry the load from the PC PS.
Sure makes a large enclosure for a PS.

David

< Message edited by woopie -- 12/15/2003 3:00:41 PM >

(in reply to benliu)
       Post #: 34

RE: PC Power Supply (Help) - 12/15/2003 4:25:50 PM   
sideshow



Posts: 2518
Joined: 11/29/2001
From: Pleasanton, CA, USA
Status: offline 		I use a power supply from my R/C car racing days. Something like this....

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3164894114&category=34063

or like this......

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3164890400&category=34063

it runs my two Orbits perfectly.


_____________________________

Bob Convery

(in reply to woopie)
       Post #: 35

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