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Author Topic: PSU jumper and load balancer on 3.3v rail for Gridseed setup?  (Read 1083 times)
fedge (OP)
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March 30, 2014, 09:16:08 PM
 #1

I really don't know a lot about electronic circuts and why you would need this, but would this item be of use for safety or stability in a gridseed application using atx power supplies.?...

24-pin Power Supply Jump Start With Dummy Load +3,3V.

or is it a waste and potential fire-risk.  I have had "resisters" in my car stereo system that saw too much wattage and started to smoke.  No fire, but it stunk until it burnt out the connection enough.

Do you really need to run a load on the 3.3 rail when not drawing the load for "stable" power in most psus?   

Maybe just a cheaper jumper is all that is needed.  I just want to see what others opinions are... in case i am overthinking this.  I am not using a paper clip that can pop out.  I want that to be my last worry.
vayvanne
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March 30, 2014, 09:29:18 PM
 #2

Does not miners do enough gauge to PSU to keep it on? The jumper is only to switch PSU on, there is no need in resistors if the miners are connected already.
fedge (OP)
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March 30, 2014, 10:12:47 PM
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Im not sure how it effects the quality and longevity of the output of the psu though.  That is my question. 

I found another link on ebay for powering older AT P8/P9  boards with modern eps 24pin psu. 
They had a 3.3v 10watt load applied to the connector along with an on/off switch and AT P8/P9 connectors.

So that is where the question is originating from.  Maybe you can power the gridseed, but only the 5v and 12v outputs being used.
 Huh  Is there a risk of not using the 3.3v output with just any psu you buy intended to go into a pc?
vayvanne
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March 30, 2014, 10:46:49 PM
Last edit: April 01, 2014, 11:31:23 PM by vayvanne
 #4

I have the Corsair PSU without any resistors powering BFL LS'es. Have not checked if it runs without my self-made jumper, I just left jumper connected.
[edit]
My PSU is fully-modular. Seems that non-modular PSU requires "load balansers" on 5v rail.
Here is some additional info: https://bitcointalk.org/index.php?topic=552889.0
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