about heatsinks?

I'm absolutely new to DIY but i've been browsing tinkernut's and kipkay's stuff for a while now. For starters, i'd like to know in general terms- how do i know when to use a heatsink and how to connect to various appliances?

Question by whisp3r3r 6 years ago  |  last reply 6 years ago


Cheap Heatsinks

Does anyone need heatinks? If so I have some that I am willing to sell for a very reasonable price. I have them in many shapes and sizes just look at the pictures. Any that are pictured in pairs can be sold in pairs. I don't have a large amount of any type, but I have enough for your typicall electronics project that just needs a little extra cooling. These heatinks are salvaged but are still in good uncorroded condition. All come with screws. If you need more pictures or info on a certain one let me know. I accept secure payment through pay-pal. I prefer to ship to the continental US but if you are somewhere else we can work something out. Post or PM me if interested. Enjoy

Topic by nurdee1 7 years ago  |  last reply 7 years ago


Heatsink Required ? Answered

Hey Guys, I want to know if I will require a heatsink for my 7805 Voltage Regulator. The usage conditions are:- Supply Voltage=8.4-9 ish v Regulated Voltage=5v Supply Current=2A Current to be used=1A Thermal Resistance=Not sure Ambient Temperature=77-88F Usual 105F Max Thanks. -Prickly Potato

Question by SA-DIY 3 years ago  |  last reply 3 years ago


Resistor Heatsink? Answered

Hi Guys,   I built a power supply (half wave rectifier) for a project. It simply rectifies normal 120VAC and gives me a pulsed 120VDC output. The resistors are rated for 20 Watts (I calculated that I only needed 4.32 Watts), but they still seem to get extremely hot and I think they are beginning to break down. Is there any way I could put a heat sink on them? Thanks

Question by transistorguy 8 years ago  |  last reply 7 years ago


laptop graphics card, custom heatsink or other compatible heatsink? Answered

OK, I have a Dell XPS M1710 that has an overheating issue.  I have done the oven re-flow around six times and it works, but it will eventually keep dying.  I'm afraid that the card has finally come to its end but I'm willing to give it one last attempt.   I'm going to attempt to convert the laptop into somewhat of a desktop.  I'm going to get a large heatsink for the CPU and hopefully find one that will fit the graphics card.  I'm hoping that with better cooling the graphics card will stop going out on me.   I have found a heatsink that i believe will work for the CPU but I'm not exactly sure I can find one for the graphics card.  I'm not even sure if it's possible.  If it is, that would be awesome if anyone could find one.  If there isn't, however, does anyone know another option?  Maybe, 3D print an adapter and connect it to a heatsink and then throw a fan on it?  Any suggestions?  The problem I have is that the screw holes on the graphics card are in a rectangle rather than a square.  I'll try to provide pictures to show what I mean.  If you need anymore I can get those to you.

Question by knex.gun.builder 5 years ago  |  last reply 5 years ago


I need advice on selecting a heatsink for a high-power LED driver circuit.

Can someone help me out regarding the proper heatsink to use for Q2 on step six of this instructable- https://www.instructables.com/id/Circuits-for-using-High-Power-LED-s/ My LED (part number 475-2581-1-ND on digikey) draws 1.4A with a forward voltage of 2.5V. I am using a wall-wart that gives me about 10V. My LED runs smoothly, but the two heatsinks I've tried using with Q2 get *very* hot to the touch. I bolted both of them on using thermal compound. Both are TO-220 "U" shaped. One is about 2cm tall by 1cm wide (about the height and width of Q2). The other is about 3cm tall by 2.5cm wide. How hot is too hot for a heatsink? Would a different shape be better? Thank you so much

Question by erikp 7 years ago  |  last reply 7 years ago


Heatsinks and Peltier Chips-WWWWWUUUUTTT?

I need a peltier chip for a project and I'm a little confused how they work. I'm pretty sure I got it right, but not positive. Can someone tell me if this is right? The hot side of a peltier chip is attached to a heatsink with "grease" (can someone tell me where to get that?) then a fan blows the hot air away from the peltier chip from the side and another fan blows across the side of the peltier chip to its intended destination for cooling. Is this right?

Question by Adum24 8 years ago  |  last reply 8 years ago


cheap aluminium for cooling transistors and such? Answered

I just saw an aluminium stair (costing bout €30~€40) and wondered why i couldnt cut it up, and use it to create a heatsink for transistors and stuff like that. would this make any difference with comercial heatsinks? only in terms of heat-conduction i know shape is a factor, but i'd like not to get into that, i could bend the cut-up stair or something

Question by godofal 9 years ago  |  last reply 9 years ago


What is the best way to fix a heatsink to a 1w led?

I want to glue/fix a heat sink on a power led. I dont have any hole to srew it. What can i use to glue it?

Question by tiledz 10 years ago  |  last reply 10 years ago


I have a small heatsink and fan,What do i do with it?

Its about 6 Cm Wide and 4 Cm tall. The same for the fan. It came from an old computer that is now fried.

Question by ReCreate 10 years ago  |  last reply 9 years ago


What thickness of plexiglass is best to use for a water block? Answered

Ok, so about three months ago I bought a 168W peltier unit off of ebay. I wanted to fool around with the cold side, the only problem was that I did not have a large enough heatsink to disapate the heat. And thus the peltier would overheat after 20 seconds. So last week I decided to make a water block out of the heatsink, the design was very simple, encase the heasink in plexiglass and add two hose barbs. Now my problem is that I can't decide on the thickness of plexiglass I want to use, 1/16" would be nice but I worry that it will break, and 1/8" is a little more expensive. Any ideas?

Question by junits15 10 years ago  |  last reply 10 years ago


Help making an LED lamp

Alright, I want to make an LED grow light for my plants because the window I want to put them in doesn't get enough sun. I need quite a bit of light for this application and it will have to be on for a significant part of every day so LED is a must. I've been looking at the prices and it seems like the most economical option is to buy some LEDs off ebay, buy a driver... maybe some resistors... then mock up some kind of heat sink to connect them to. I was considering about 10-20 ten watt on chip LEDs. This light is going to be in a room I'm in a lot so I don't want to go with any funky colors. I'd like to just use daylight spectrum LEDs. Something around 6500k. Anyway, I'm thinking it makes the most sense to get one big driver to run all the LEDs rather than one driver for each. That just seems cheaper and frankly more interesting. But I need help understanding how to wire the whole thing together and understanding whether I need resistors etc. So I'm looking for some general help figuring out what to buy and then how to wire it all together. Thanks :)

Topic by WillE2 3 years ago  |  last reply 3 years ago


Removing heatsink from air conditioner? Answered

I got an old (functional) AC lying around and before i get rid of it i tough i'll try to do something with it. I tough about removing the heatsinks from the rear coil and cooling it with another copper tube with water pool flowing in. This way i hope to achieve 2 things : incrase the eficiency of the AC by cooling it with another coil of cold water and heating my pool for free ( and hopefully with better and more constant results than the solar heater) Since im'not HVAC certified, i'll have to remove the heat sinks pieces without removing the refregirant tubings. Any tips on removing thoses?

Question by gazoutg 4 years ago  |  last reply 4 years ago


expanded graphite heat-sink? Answered

Okay , I've searched and searched and cannot find what I'm looking for. Maybe the other diy'ers can help me. 1.What I'm looking for is a heat-sink made of expanded graphite or (carbon, graphite (∥) as it might be known as well) that is actually in the shape of a traditional aluminum heat-sink with the fins and NOT in the shape of thin film as it is very commonly available. I don't even know if it exists or is manufactured by any company. I've tried contacting some companies about it but they have yet to get back to me. The reason I want this is for the tremendous increase in heat conductivity as in this chart shown on this webpage http://physics.info/conduction/ . The application I am trying to use it for needs a raised, elongated surface area to displace heat semi-uniformly, hence why I need fins like a traditional heat-sink instead of the commonly available film expanded graphite online. 2. If it does exist or is able to be manufactured, would it be a ridiculously priced part or would it be a reasonable priced part? (Just doing small scale tests for now so it would be the size of a FET finned sink). 3. From what I've read it seems possible by maybe layering the films into a stacked lattice, keeping heat transfer perpendicular to the lattice, but what are your thoughts all? (I question bonding the layers myself but I don't know if you could hard press the layers together without a bonding agent since any bonding agent being used I believe would reduce the thermal conductivity quite a bit, but I'm not incredibly familiar with expanded graphite). Any and all help would be appreciated from this wonderful community Best regards, Velesh

Question by velesh 6 years ago  |  last reply 6 years ago


What is a heatsink? I see the word everywhere? Answered

Question by airsoftsniper12 8 years ago  |  last reply 8 years ago


Does PC cooler's(FAN's) heatsink conducts electricity and heat?

I WOULD LIKE THAT IT CONDUCTS HEAT BUT NOW ELECTRICITY SO I CAN PUT helix in that that will be heater!!!

Topic by h0meIandsecurity 8 years ago


Computer PSU's and Peltier elements?

Hey, I have 2 158W Peltier elements, that I would like to mount to some CPU-heatsinks, and power with an old 400W PSU. Can I "just do that"? There seams to be some caveats with how these units draw power AFAIK. Also, does anyone have any experience with how much heat displacement is needed to not just ending up frying the unit? Any suggestions on what heatsink to pair them with, and how strong a resistor to put on them? I want to use them at the maximum power I can get them to run with continuously for up to 2 hours. I have way too limited experience with electronics, and only a week to build my project, so I kind of have to go with the simplest approach here :(

Question by ELF 8 years ago  |  last reply 6 years ago


is there a better way to cool my computer? Answered

I was given, a few years back, a compaq armada 7400. my brother took it apart (because he accidentally hit it with a sledgehammer and damaged the scroll knob mouse thing - don't ask) and decided that this "wire" was unnecessary. he proceeded to cut this wire. turns out, it was the heatsink. so, now I need to know- what is the quickest, dirtiest way to cool my crappy laptop? I want to make it a digital picture frame.

Question by codongolev 10 years ago  |  last reply 10 years ago


Dell Dimension 4700 cpu heatsink removal?

Hi! I am having a really hard time removing my cpu heatsink. The computer is a Dell Dimension 4700 and dell's site didnt help at all. WHAT TO DO???

Question by sci4me 8 years ago  |  last reply 8 years ago


Can I fit a 10W heatsink in a zippo? Answered

I want to put a cree XM-L LED in an old zippo, and I want to know if anyone knows how to fit a big heatsink in the top part of a zippo lighter, not in the base, and preferably able to buy everything from a hardware store, not ordered online.  Also, does anyone know how to anodize aluminum for added heat dissipation?

Question by jduffy54 6 years ago  |  last reply 6 years ago


I patented a New LED great for home projects and display cases

I have spent three years doing this but here it is. This is a new LED and I actually patented it. Its a screw in unit that has a chip mounted directly onto a solid brass core that takes heat away far better than any circuit board. In addition it screws into any m10x1.5 hole, if you use a flat plate on the front a small insulator and a heatsink or metal on the back with the M10 thread all you need do is make an electrical connection to the plates and you can screw any colour you want into the heatsink. It comes in every wavelength from 380 (uv right up to IR at 1040nm) Ill be adding pics shortly of acrylic displays the 180 degree one is absolutely perfect for these i use frost spray on edges i want to illuminate and leave clear other bits the effect is amazing even masking a flat acrylic and putting two tone pictures using the spray is awsome. iv also designed an off the shelf PCB up to 60watts it drives any series parallel circuit, all you do is program it with the wattage of the whole array. If you program say 15watts in an array with several LED's it powers the array with the exact forward voltage required and alters realtime so the light output is near constant. Also have a patent pending on this as well. I have lots of time and plenty of these available if anyone is interested I am now running a small business based around it and have done some really nice hand crafted kit. More pics to follow all questions welcome Thanks all

Topic by L.E.D Guy 6 years ago  |  last reply 6 years ago


How do I know if I've shorted my video card? Answered

So I have two 8600 GT's in SLI, and lately I've noticed that the second one was running a bit hot. So I reapplied the thermal paste with some AC5 I have lying around. However, I accidentally got some on/around some of the extremely small circuitry next to the GPU processor. I cleaned it off the best I could with rubbing alcohol, and everything seems to work fine, except I've been noticing some artifacts in my games that weren't there before. I'm wondering if I might have caused a short circuit by bridging some connections with the thermal paste, which would then cause the artifacts. It is the conductive kind after all :(. So is this a plausible conclusion, or would a short circuit have already fried my card? Any other ideas as to what's causing the artifacts?

Question by RelaxedSoup 9 years ago  |  last reply 9 years ago


Finding an appropriate heatsink for 5V 3W LED? Answered

Hello, I have bought some 3W 5V leds, and now I have to dissipate the heat they produce. I am thinking of using an xbox 360 GPU heatsink i have laying around ( https://s3.amazonaws.com/assets.overclock.net/7/7b/7bb1229a_vbattach111891.jpeg ), cut in apprpriate size. Then I would glue the led with thermal epoxy to it.  Can somebody suggest an adequate size for the heatsink? I can't find any info around. I have other heatsinks as well, I would rather not buying a LED heatsink if that's not mandatory. Thanks in advance :) Picture of the leds attached, they have no board to screw them with.

Question by en_rov 4 years ago  |  last reply 4 years ago


i need help finding heatsink for led?

I have these LEDS (http://www.cree.com/products/pdf/LEDlamps/CLN6A%28979%29.pdf) and dont know what type of heatsink to put them on can anybody suggest me to any in particular.

Question by diabloboy 8 years ago  |  last reply 8 years ago


How to set up a heatsink...not inside a computer? Answered

Im thinking of buying a heatsink with a fan on it. If I dont put it in a computer will it work as long as it has electricity? Will it blow cool air on me if I set it up on a stand?

Question by Adum24 8 years ago  |  last reply 8 years ago


Building a stove fan using a CPU Heatsink & Cooler

Hi All, I'm looking to build a stove fan and was wondering if It would be possible to attach a peltier to a CPU fan & heatsink like the one attached? Thanks!

Topic by mrawat 6 years ago  |  last reply 6 years ago


Purchasing a peltier unit and have a few questions about them

I am planning on buying a peltier unit and have a few questions about it. This website gave me the idea so I figured I would ask here.What I'm planning to buy, http://www.virtualvillage.com/158w-thermoelectric-cooler-peltier-plate/sku001540-003I'm just going to list the questions and hope that someone is willing to answer,1. I understand that these unit get very hot and very cold at the same time, from my knowledge (which is not much so correct me if I'm wrong) of electronics the cold isn't really much of an issue but the heat could cause problems. Do I need to run a heatsink maybe with a fan on the hot side to prevent damage to the unit?2. It lists its' range as 0-15volts and 0-10amps I know overpowering a unit can cause damage to it, can under-powering non-mechanical electronics cause damage as well? Can you even under-power a peltier unit?3. On the website it states "Temperature Range: -60C to 180C" is this the temperature range I can expect the unit to reach at 158W or is it the range in which the device will operate?I would like to thank anyone in advance for taking the time to answer any of these questions.

Topic by Tpolich 9 years ago  |  last reply 9 years ago


What heatsink should I get for my AMD FX-8350?

In short: I built a computer octoboer 2013, I used an AMD FX-8350, the default heatsink is terrible and often gives me the BSoD when playing games or rendering things in Cinema 4D, What heatsink should I get? I don't know much about heatsinks, especially seeing that I used the stock heatsink. My motherboard is an ASUS M5A99X (http://www.newegg.com/Product/Product.aspx?Item=N82E16813131874) and my case is a RAIDMAX Seiran ATX-902WB (http://www.newegg.com/Product/Product.aspx?Item=N82E16811156269). My budget is about $60 or so. I don't want to spend more than I need to though. The most demanding thing that gets me the BSoD is rendering things like on Cinema 4D 100% CPU. When I render, however, I usually set the affinity of Cinema 4D to only 5 cores instead of eight. So here are some of my questions: Do I need an extra wire from my PSU to run the fan? Or does the fan on the heat sink simply have a wire to plug into the CPU fan socket? Also, do I need to take my motherboard off in order to put the heatsink in? Thanks!

Question by knexpert1700 5 years ago  |  last reply 5 years ago


Fridge CPU cooler? Answered

If you got to the ible on making a usb fridge https://www.instructables.com/id/5-Mini-USB-Fridge!/ it tells you to find an old camping fridge and take out the peltier/heatsink unit, can you use that unit to place on a CPU of a computer or laptop to cool it down?

Question by jibatsu 9 years ago  |  last reply 8 years ago


Where could i buy a peltier/heatsink unit?

I want to make a USB mini fridge and i don't know where the best place to get a peltier/heatsink unit would be.

Question by robertcrosscountry 9 years ago  |  last reply 8 years ago


how can I remove a heatsink backplate which is stuck/glued to ?my motherboard?

Hi,I'm from Indonesia.I've just bought a new mainboard for my personal computer and  I want to install my old heatsink fan processor from my old mainboard. The problem is that I cannot remove the backplate which is stuck/glued with adhesive tape from my old mainboard. Has anybody got ideas to solve my problem,please? Thanks Prasetyo

Question by 9 years ago  |  last reply 9 years ago


What lube would be best for a 3x3x3 rubik's cube? Answered

I have a rubik's cube, and I want to lubricate it. I have heard that the best, reliable lubricant would be silicon spray, but I have a lot of silicon heatsink compound that I'd like to use....would it make much difference? I also have WD-40...but that supposedly melts the cube, right?

Question by .Unknown. 8 years ago  |  last reply 7 years ago


how effective is this airflow design? Answered

I am working on a very small build pc, and i was thinking that the best way to reduce overall height would be to design a cover piece that directs the airflow from the intake fanover the CPU and northbridge heatsinks and out the back of the unit via an exhaust fan. this method was chosen because the fan cannot be on top of the cpu heatsink because the unit would be too bulky if it was. I have attached a crude image of the planned cover and the layout of the board's heatsinks, and i would like to know if this is a effective method for cooling, in such a small form factor. if it isn't, what is?

Question by zack247 8 years ago  |  last reply 8 years ago


How can I salvage LEDs that are welded to metal heat sink? Answered

I have a light fixture that used to be an street lamp, and the 350mA 240V constant current ballast failed. The LEDs appear to be welded directly to thin insulated metal sheets which as somehow bonded to the large metal heatsinks. I think the LEDs are Cree XR-C's, and there are 6 of them on each module, and there are I think 6 modules in total. I have some ideas, but how would I get the LEDs off the modules, if they are even worth saving at all? They are according to CREE they produce 78lm @ 2W, and are a pathetic 39 lm/watt. If I can get them off the aluminum heatsink easily enough, I might be able to use them for prototyping purposes so I do not kill $$$ XM-L LEDs, and do not kill 3mm white LEDs either, since I tend to kill those quite fast too by overdriving them or too much voltage. It is amazing to think how far technology has come, that XML led sitting next to the module outputs more than double the light, with less 20% less power!!! I have always thought that LED technology still has a WAY to go before becoming practical enough to justify the higher costs, but if a company has installed this Piece of Sh*t light fixture back when these LEDs were 'state of the art' than I wonder when metal halides go obsolete!

Question by -max- 4 years ago  |  last reply 4 years ago


Removing potentiometer and making a direct connection?

Want to remove those potentiometer ir order to attach a RsbryPie 3 heatsink to make the IC cool. IT'S a PAM8406,and on it's max load it's getting really hot. So have to apply a heatsink. So is there any​ way to remove those potentiometer and connect those line directly, i mean I'm newbie in this thing. So need some help, thanks in advance.

Question by Sayan_trex 1 year ago  |  last reply 1 year ago


Using TEC chips and heatsinks for personal cooling - heating collars or pads

I've been toying with using TEC chips (facinating devices that are cheap - applying voltage make one side hot - the other cold, Inversely, appling any existing temprature differential to the sinks PRODUCES POWER). They are used most commonly by consumers in auto beverage coolers and heaters. It  started when a car ran me down on my bike, and I was wearing a neck brace for months. I thought about how misserable I'd be if it were summertime. I also thought of those poor people that always wore them... Anyway, there's a thousand different easy ways to do this - I took fluid-filled plastic sections of a beverage cooler and attached them to a belt, which hangs around my neck. applied the heat  sink of the TEC and there you go - just wrap it in something. Now if I were on a motorcycle in summer and stopped in traffic, the cool collar would be a lifesaver, as well as a myriad of other apps. I cannot figure out the best (inexpensive) way to control this. It's easy enough to turn on and off - you can hardly forget it! But if I allow the chip to get too much wattage it will get too hot and self-destruct. Also, if I limit the wattage correctly, it would just need adjusting, and could be left on most of the time. The idea here is there are many ways to do this but they are too expensive... I want everyone to be able to afford it. If you use a Pot or resistor, the excess goes to heat and ruins battery life, and other controllers of DC current are expensive. Any help? I am almost 60 and have earned the nickname Misc. Expert among my family and friends, and I must say I'm very impressed with what y'all do here in this newsletter - Congrats!

Topic by miscexpert 7 years ago  |  last reply 7 years ago


WHERE IS THE FUSE INSIDE MY COMPUTERS PSU?

A WIRE TOUCHED A ALUMINUM HEATSINK INSIDE MY PSU AND NOW IT WONT POWER ON

Question by REALONE414 7 years ago  |  last reply 6 years ago



Peltier coolers and condensation?

Hi there, I'm having this crazy idea of building a mini AC based on a Peltier cooler, and connect it to a PC case to introduce cold air inside of it. I have seen a lot of instructables here, but I'm worried about condensation. You know, the "electronics + power + water = Kaboom!" equation. Neither the peltier nor the "cold" heatsink will be inside the case, I'll just blow air thru the "cold" heatsink and inside the case, releasing hot air far away (maybe with a long tube?). My question is if the cold air will carry some kind of "humidity" from the condensed cold heatsink, and if it will be enough to blow things up. I can spare some 60 or 70 watts to make the peltier work, so I'll just grab a ATX power supply for the peltier and the fans. Do you think it will work? Thanks in advance, and Happy New Year. :)

Question by ethaniel 8 years ago  |  last reply 3 years ago


CPU grill?

I recently decided to make a mini-grill (similar to the gas/charcoal ones found around the site), but I want to be able to do it with electricity. My plan is to overheat a CPU with a heatsink attached and allow the actual heatsink to be the grill. The only trouble is that I can't figure out from the pinout which pins I have to supply power to. Could anyone give me an indication as to which pins they are? Also, any other advice would be appreciated. =) CPU Pinout: http://download.intel.com/design/Pentium4/datashts/29864312.pdf

Question by DELETED_DELETED_Taneth111 8 years ago


Making a temporary amp with mosfet?

I don't know how to make a amp for my 4ohm 125watt subwoofer? I got heatsink and some Toshiba mosfets.

Question by ShaneR66 7 months ago


Buying nuts and bolts? Answered

Can someone point me to somewhere where I can buy nuts and bolts? I need them to be up to a few cm long, and about small enough to fit through the hole in a TO-220 transistor.  I tend to use them a lot, not just for fixing transistors to heatsinks, but my local hardware stores don't have them Also, I'm looking for those small plastics bits (look like a very small and short bit of pipe) that fit into the TO-220 transistor's hole, before you put the bolt in, electrically isolating the transistor tab from the bolt and the heatsink.

Question by .Unknown. 6 years ago  |  last reply 6 years ago


What kind of material to use?

Okay I've procrastinated long enough to do something with my ibook's heatsink. As some may or may not know, ibooks come with thermal pads, which I unwittedly removed the old one off mine, thinking it could be replaced with good old generic thermal paste..which technically would be better for it.Unfortunatly folks the heatsink wasn't designed to clamp down onto the cpu like a normal heatsink should do, as it has to cover several different gpu/memory chips of different sizes, making a small gap between the heatsink and cpu.I've heard of people using a square or even round piece of steel or copper or something to wedge in with some thermal paste. Well, all I can think of off hand to use that might work is some sheet metal that has some white paint or something coated on one side, and a round steel (?) rod out of an old printer that's been sitting around. I presume the latter would probably be better.Can someone suggest what would be best? Should I try cutting it with a hack saw or try getting someone's bandsaw so I can get a better cut? Right now my ibook is reporting a cpu temp of 53 of Celcious, which really, compared to when it's turned on from a cold start, is really F***** slow and very laggy, it often hangs for minutes at a time. It's horrible to use sometimes, but at the same time it owes me absolutely nothing so I won't cry if it burns out.

Topic by Punkguyta 11 years ago  |  last reply 11 years ago


Metalwork: How to solder a joint close to an existing joint without melting the first one? Answered

I'm trying to make a sculpture by soldering copper/brass rods together, but when I try to make one joint, it melts all the surrounding joints. I tried putting on some heatsink tweezers but they weren't effective. It's going to be quite complex, so clamping the whole thing and soldering all the joints at once won't be practical. Any tips for making a better heatsink? Should I just solder faster? At the moment I'm letting the metal get really really hot because I guessed it would make a better joint, but maybe I'm overdoing it?

Question by MrZebra 10 years ago  |  last reply 11 days ago


Trouble with LM317?

Im having trouble in finding a heatsink for an LM317M chip and was looking for suggestions on where to find one that would be good for it. this is the datasheet for the chip...it should be the DCY Package (top view) http://www.ti.com/lit/ds/symlink/lm317m.pdf

Question by diabloboy 6 years ago  |  last reply 6 years ago


CPU Thermal Management?

Hi all. First of all, I am running a Pentium 4 530 at 3.0Ghz. The temperature at FULL load is about 60-70 degreese CELCIUS. The cooler us a .. Rocketfish Universal CPU Cooler.. (http://www.bestbuy.com/site/Rocketfish%26%23153%3B+-+Universal+CPU+Cooler/9462609.p?id=1218108988702&skuId;=9462609) I dont know the code so i gave you a loink to it. I plan to upgrade to a Corsaire H50 to overclock. But first, I want to get my temps with this heatsink under control. I think it's the thermal compound... It's not applied very well.. I had to keep taking the cooler off and putting it back on to get it to clip into the board... :D Anyway, please let me know what you think I should do. THANKS!

Question by sci4me 7 years ago  |  last reply 7 years ago


Instructable idea: the Frankenbox 360

Ok, I'm working on something, and before I go through the trouble of writing an -ible for it, I would like to get a good idea of what kind of interest there is in it. I recently came into a free bricked xbox 360 (shocking I know, those are SO hard to come by.....) so, I have harvested a few parts, and am modifying my old xbox that had a bad habit of overheating by putting another of the larger heatsinks in xbox's over the gpu, changing the shape of the fan duct to accommodate the larger heatsink, and will putt the cd drive on top of the case, run the wires inside, and hook another set of the original fans to a 12v power supply and mount a switch on the case. This thing will be hideous, beautiful and will tell heat just where to go. :) So, What does everyone think??

Topic by daywalker42 9 years ago  |  last reply 9 years ago


Fixing a old tv that shorts out?

So i have this old Magnavox projection tv, hasent been run in a long time due to a shorting issue between a heatsink and something (its been so long that i dont even remember) I can plug it in and find excatly where its shorting but i dont want to fry the tv... I do remember that it is one of the heatsinks by the flyback that it arced from. I also have the basic wiring diagram for the tv, but it only shows how to adjust the picture, what connects to what and, what wire is what. Should i try and turn it on again and find where its shorting and possably fix it, or just call some tv repair guy who knows more of what hes doing.

Question by knexsuperbuilderfreak 5 years ago  |  last reply 5 years ago


Cpu fan for celeron D? Answered

I have a celeron d proccessor....i need to know if either of these or this would work....i dont really need the heatsink, as the old one works perfectly, so im guessing that they'll work, but i want to make sure...any and all suggestions are much appreciated !

Question by fwjs28 10 years ago  |  last reply 9 years ago


Is someone willing to give me a good amount of technical advice concerning heat dissipation using a Peltier device ?

Ok, I have a laptop that I use to play many videogames with, and as you can imagine, it has an overheating is a problem. I have software that monitors the GPU and CPU temperatures while I play. The GPU and CPU are rated at a 100c max temperature. Now that the summer season has started, my laptop gets hotter and hotter as I play. I am usually forced to Under-volt my computer so that it stays below safe temperatures. Now, I was digging around online and came across something called a "Peltier device". It is a small ceramic plate (with electrical nodes inside) that when electrified, transfers the heat from one side to the other. The peltier I got is rated at 545 watts, 32 amps, and 18vdc, and gets as cold as -60c, 150c. I ordered a desktop power supply online, along with 2 CPU cooling systems. (I.E.  2x Professional grade heat-sink, and 2x 120mm fan) The Power supply outputs 430watts, 28 amps, and 12vdc. I planned on taking these parts and simply sandwiching the peltier between 2 heatsinks, having 1 hot heatsink+fan and 1 cold heatsink+fan. I planned on pumping the cold air into the air intake on the bottom of my laptop, and just pump the hot air into the room.  Unfortunately, the problem I face (and this is a really stupid mistake) was that I did not measure out this whole assembly. It turns out, the peltier face plates are roughly 2.5" x 2.5", whereas the heat-transfer faceplate of the heatsinks are only about 1.5" x 1.5". Now, I wired this all up, and put it all together, ignoring the parts of the peltier that were hanging off and lo' and behold, the peltier worked as designed, one side got extremely cold, and the other got hot. The only problem is, over time, since nothing was drawing the heat away from the edges of the hot side, it transferred over to the cold side, thus warming it up to about room temperature, negating the entire purpose of the contraption.  This is the part that I need help on, would simply taking some aluminum plates that are large enough to cover the entire surface of the peltier, smother both sides in my remaining thermal compound, and then connect this aluminum (with more thermal compound) to the heatsink? This contraption is essentially meant to be a laptop cooling pad. Mounted inside of an old computer case. So it needs to be mobile (IE, liquid cooling is not an option). Can anyone think of a better solution to this? 

Question by schwerlin 6 years ago  |  last reply 6 years ago