IDK why, but my Intel OR840 i got runs fans really fast. I have 2 Nidec Beta SL's, 80mm fans from a old powerpc powercenter pro 180. They only have a positive and negative connector, no fan speed connector thingy. The thing is, I had one of these hooked up to my old Vectra vl800, its not capable of fan speed control. But the fan ran slowly, quietly and didn't push much air. Did the same thing hooked up to the power center pro, when i hooked it up to the intel OR840, it revs way up. Pushes a ton of air and is pretty loud.
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Re: Intel OR840 really fast fans
The only answer to that question is the voltage output from the mobo on your other computer where to fans run faster is higher. Lets say 12 volts instead of 5 volts.
Well if these fans are common 2 wire ones (no speed control) you could always cut off the wire just before the fan connector and splice in a voltage regulator.
I'm not talking about the 1 Amp heatsunk regulators the fan doesn't draw near as much current to need them I'm talking about a TO-92 (standard through hole transistor package) voltage regulator.
Simply solder the ground wire between the fan and mobo to the ground pin of the regulator. Solder the positive lead from the mobo to the V in pin on the regulator. Solder the positive lead to the fan onto the V out of the regulator.
Just be sure to insulate the bare wires with electrical tape or heatshrink tubing.
Just make sure that you are within the regulators drop out voltage. Dropout voltage is the minimum the voltage the regulater needs applied to it's V in pin to function.
It's usually 3 to 4 volts higher than it's output voltage. Low dropout regulators have lower dropout voltages. Always check the datasheet of the regulator you intend to buy this is always listed.Last edited by Krankshaft; 10-23-2008, 06:12 PM.Elements of the past and the future combining to make something not quite as good as either.
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Hello guys. I have a problem with a PNY XLR8 GAMING RTX3090 graphics card. The problem is that it displays and works fine, but the fans don't spin at all. The problem occurred when someone else removed the fans in order to clean it and broke one of the fan connectors. He replaced it himself and after that, it wasn't working anymore. I guess he damaged something else in the process. What i have done so far: I found 2 capacitors next to the connector that were in a bad shape, he must have touched them with his tools - they weren't shorted, but i replaced them with similar ones from a similar card....04-12-2024, 06:54 AM -
FAST MODE vs NORMAL MODE
I have recently acquired a HP 6632A DC power supply. I am just beginning to use it and I have been reading the manuals for it. It is the first power supply I have ever owned or used. I am a very beginner hobbyist and do not have an engineering background, as may be obvious by my question...
I can't seem to understand what the actual use is for the 'Fast Mode' or the 'Normal Mode' on the power supply. Although the manual states what the two modes do from a engineering/technical standpoint, I don't know enough to understand what it all means,... -
Hello everyone,
I want to find a replacement for uP0109 8pins, and i found this parts:
uP0109 is "2A Ultra Low Dropout Linear Regulator"
RT9199 is "Cost-Effective, 2A Peak Sink/Source Bus Termination Regulator"
FP6137C is "2A BUS TERMINATION REGULATOR"
can replace uP0109 by RT9199 or FP6137C ? -
Good Afternoon, Good People.
I know this will be an elementary little project for most if not all of you, but I thought I would write a post and get put on track, rather than bumbling my way through it with all kinds of trials and errors.
I REALLY would appreciate y'alls help.
This is the problem - My wife and I purchased a big ol Victorian/Colonial House in NYC two years ago. The kitchen is surrounded on 3 sides by exterior walls, there is also a 1/4 of the kitchen floor (ceramic tiles) that has a crawl space underneath, and the kitchen gets FREEZING cold... -
Hi everyone,
I’m working on a Denon AVR-X4000 that goes into protection mode (fast red blinking LED) shortly after the second relay click.
According to the service manual, a fast red blinking LED indicates a DC detection (DC_DET) or ASO (abnormal current) fault, meaning the unit is detecting a potentially dangerous condition on the power amp or power supply side.
Here’s what I’ve done so far:- Fully opened and cleaned the unit (a lot of dust inside)
- Removed and visually inspected the AMP board → nothing visibly damaged or burned
- Testing is done with
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