This is my first post here, so I'll start by saying hello to all.
So I've been searching and searching and I can't seem to find sufficient documentation on peltiers. What I mean is, I haven't found anything that references the heat transfer-ability of the peltier, when no power is applied to the N and P junctions.
What I'm thinking about doing is having a peltier turn on when the cpu reaches a temperature, after which have a PWM device controlling the % of the time the peltier is powered, until the CPU reaches a low enough temperature, at which point I'd have the peltier completely turn off. (effectively completely avoiding the possibility of any condensation)
I do not plan to overclock the system too much, I merely want to keep the processor temp around room temp. I also don't want to make an electricity hog.
My main concern is, will the cpu still be cooled by the heat sink with a non powered peltier between the two? In other words, is a peltier a heat insulator or a heat conductor, when it's not actively transferring heat?
What is the "Pepi" thermal switch?
Also, is it possible to tap into the CPU temperature reading onboard the motherboard? (to stick an analog or digital temperature reading into my circuit I would design to control the on off functions of the PWM, as well as control the PWM's output to the peltier)
Another ?: Would a PWM to power the peltier be better than varying the voltage to the peltier? (either with a voltage regulator or an op-amp)
Any comments/suggestions?
I'm thinking of making this for a P4 3.6 775 processor, with the Arctic Cooling Freezer 7 from newegg N82E16835185116 .
As of now, the only part I have is the barebones CPU. I have the knowledge to design the control circuit.
Now the search continues for a motherboard...
Thanks,
Squija
So I've been searching and searching and I can't seem to find sufficient documentation on peltiers. What I mean is, I haven't found anything that references the heat transfer-ability of the peltier, when no power is applied to the N and P junctions.
What I'm thinking about doing is having a peltier turn on when the cpu reaches a temperature, after which have a PWM device controlling the % of the time the peltier is powered, until the CPU reaches a low enough temperature, at which point I'd have the peltier completely turn off. (effectively completely avoiding the possibility of any condensation)
I do not plan to overclock the system too much, I merely want to keep the processor temp around room temp. I also don't want to make an electricity hog.
My main concern is, will the cpu still be cooled by the heat sink with a non powered peltier between the two? In other words, is a peltier a heat insulator or a heat conductor, when it's not actively transferring heat?
What is the "Pepi" thermal switch?
Also, is it possible to tap into the CPU temperature reading onboard the motherboard? (to stick an analog or digital temperature reading into my circuit I would design to control the on off functions of the PWM, as well as control the PWM's output to the peltier)
Another ?: Would a PWM to power the peltier be better than varying the voltage to the peltier? (either with a voltage regulator or an op-amp)
Any comments/suggestions?
I'm thinking of making this for a P4 3.6 775 processor, with the Arctic Cooling Freezer 7 from newegg N82E16835185116 .
As of now, the only part I have is the barebones CPU. I have the knowledge to design the control circuit.
Now the search continues for a motherboard...
Thanks,
Squija