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-   -   Volcano 7 (http://www.aoaforums.com/forum/cooling-and-temperature-monitoring/4971-volcano-7-a.html)

robbie 1st May, 2002 07:34 AM

Volcano 7
 
1 Attachment(s)
I've been thinking about modding this thing.
If you see the thing on the side of the fan??!?!??!?
Well it's a thermistor, I can take it out and add a rehostate there.
And I DON"T NEED a high power/wattage one either. No REAL amount of current is going threw it. It's just a voltage reading.

What do you think?
Rob

Lionfish 1st May, 2002 08:39 AM

You need to take a better picture :eek: :rolling: :rolling:

ocular 5th May, 2002 01:36 PM

You are on the right track.

I haven't seen one of these in real life, but have looked at the specs of the volcano7 and volcano 7 plus HSF units.

That green thing in your picture is likely to be a NTC thermistor Negative temperature coefficient).

Look for a number stamped on it. If you can't see any numbers that you can remove it and measure the resistance across it with a multimeter at 25 C.

At a guess it is likely to be a 10k NTC thermistor (looking at other thermistor controlled fan circuits). replace it with a 10 to 15k pot and you should be able to control the fan speed. There will be negligible current running thru it.

I would be interested to know what other parts there are in the Volcano circuit. There is likely to be a voltage regulator or a transistor there somewhere under the fan.

robbie 5th May, 2002 05:31 PM

I'd say probably a voltage regulator. (I think there pretty cheap) and it would be an easy wiring job.

And yeah a 10k pot should do. If I do it I'll let ya all know how it goes.

Rob

The Spyder 5th May, 2002 07:40 PM

Sigma (Who is now grounded -LOL) Did this to his fan- worked pretty well- In the end - he sold the fan- and the person wanted it normal- so i undid his mod-
SPyder

SiGmA_X 5th May, 2002 10:57 PM

Quote:

Originally posted by Spyder462
Sigma (Who is now grounded -LOL) Did this to his fan- worked pretty well- In the end - he sold the fan- and the person wanted it normal- so i undid his mod-
SPyder

Grounded.. DAMN GRADES. Now, about the fan - You can remove the temp thingy and solder those two wires together and it will run at 5000 RPMs! To add a rheostat, just clip the temp thingy and solider it in between. It will work great.

BTW - If you want a quite computer, mod the fans in your PSU and make a on/off switch for them. I can run at nearly half the loudness because of that :)


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