I changed my power supply more than 5 times, I don't know what's wrong with my computer they told me that my house's electricity is burning them but I doubt it my brother's computer works just fine and I tried different rooms to see if my room was the problem but still nothing happened, I have 1 fan in my case + air-conditioner in my room my case isn't that big but I didn't have any problems in the past my new power supply is 400 watt and I can't turn on my computer for more than 30-45 mins I don't want my fifth PS to burn %26gt;.%26lt;, my old ones used to smell like they are burning before they burn with +heat
my computer runs with 6800GT (Videocard), headphone, keybored, mouse, DVD writer, 160 GB hard disc and a 1GB ram (Idk if this info would help)
Please tell me what's wrong with my computer and how I fix it :( I tried a 500 watt PS before and it didn't last for more than 4 hours)
Thanks in advance. What%26039;s wrong with my power supply?
Sounds like you have a short or other malfunction in a drive or the motherboard.
If the power supply gets hot to the touch quickly (within minutes of turning on) you most likely have a short...try it with ONLY the motherboard connected (don't connect the drives or anything) and power up - it'll say no OS but if the power supply still has problems you know it's not the drives...
If you know what you're doing, you can use a multimeter to check the power supply lines and see if there's a voltage drop when you connect something...but be carefull what you touch!
Otherwise I'd say have it checked by a computer shop...I recommend smaller mom %26amp; pop shops because they're usually cheeper than BestBuy/CircuitCity.
I don't think it's your electricity unless you're plugging in right next to the air-conditioner (same outlet)...but a good surge-protector should keep the computer safe - a high quality UPS (Uninterruptable Power Supply) if you want to be extra-sure.What%26039;s wrong with my power supply?
Sounds like something is shorting them out, that or you got really bad luck.
It could be your wall outlet or the faulty power cord. Heck it could even be your motherboard.
I suggest getting a volt meter and try measuring the current from your wall outlet to your system and other places as well to see if there is any electrical spikes.What%26039;s wrong with my power supply?
get a surge protected power board to plug your computer into..... are you getting these power supply's from the same computer shop, maybe change your computer shopWhat%26039;s wrong with my power supply?
You should contact technical support from the website or calling the company hotline of whatever brand of computer you have. It is mostly likely the wrong voltage/wattage PS.What%26039;s wrong with my power supply?
Could possibly be an issue with your motherboard....it may be creating a short and in turning shorting out the power supply....I would try that next....
Best of luck!What%26039;s wrong with my power supply?
My friend, are you using a generic 400 and 500 watts power supply?
If you do, it will sure not last for so long. I will advice you to buy a Power supply that is branded like HEC, Enermax for your PC. For the meanwhile, to temporarily extend your PC use, try disconnecting the DVD writer and Fan casing.
Please click on the thumbs up icon for me to help entertain more questions. thanks.
Thursday, November 18, 2010
How do you control a 12v power supply with a 0-5v input signal?
I want to be able change the amount of power supplied to a device 12v device depending on a 0-5v input signal. The idea is that at ~1v the device operates at low speed and at 5v the device operates at the highest speed. The device is an electric water pump.How do you control a 12v power supply with a 0-5v input signal?
you probably don't want to futz around with the internals of the 12 volt supply, as you will need the schematic and be able to analyze it. Although that may be the best solution.
If the motor will withstand it, you can use a Pulse Width Modulator with the 0? volt signal changing the duty cycle from close to 0% to 100%. This is a bit elaborate but best for power saving and heat dissipated.
Third solution is to add a external amplifier/regulator. You need one that will operate with close to zero drop and with your 0? volt control signal.
A simple solution that may work is to first amplify with an opamp the 0? volts to 0?2.7 volts and apply that to a power transistor emitter follower between the 12 volt supply and the pump. But you will need 15 volt supplies.
.How do you control a 12v power supply with a 0-5v input signal?
You need to understand how the power supply is made to achieve this.
You have to modulate the reference in the power supply, but not all makes and models will tolerate this.
I would suggest using an amplifier like TDA2030 or LM3886
Hope this properly answers your questionHow do you control a 12v power supply with a 0-5v input signal?
There are many electronic devices that can do this.
Research voltage amplifier, voltage regulator, voltage
multiplier, variac, SCRs and thyristors like triac etc.
perhaps a simple potentiometer arrangement might do
you probably don't want to futz around with the internals of the 12 volt supply, as you will need the schematic and be able to analyze it. Although that may be the best solution.
If the motor will withstand it, you can use a Pulse Width Modulator with the 0? volt signal changing the duty cycle from close to 0% to 100%. This is a bit elaborate but best for power saving and heat dissipated.
Third solution is to add a external amplifier/regulator. You need one that will operate with close to zero drop and with your 0? volt control signal.
A simple solution that may work is to first amplify with an opamp the 0? volts to 0?2.7 volts and apply that to a power transistor emitter follower between the 12 volt supply and the pump. But you will need 15 volt supplies.
.How do you control a 12v power supply with a 0-5v input signal?
You need to understand how the power supply is made to achieve this.
You have to modulate the reference in the power supply, but not all makes and models will tolerate this.
I would suggest using an amplifier like TDA2030 or LM3886
Hope this properly answers your questionHow do you control a 12v power supply with a 0-5v input signal?
There are many electronic devices that can do this.
Research voltage amplifier, voltage regulator, voltage
multiplier, variac, SCRs and thyristors like triac etc.
perhaps a simple potentiometer arrangement might do
Is my power supply enough?
I have a 430 Watt power supply on my computer. I am running a computer meant for gaming with currently...
-500GB hard drive
-4 GB (in 2 sticks) RAM
-Nvidia GeForce 9500 GT video card (no fan)
AMD Athlon xII (dual core) (2.9 GHz)
-2 case fans
-obviously processor fan
-1 disk drive
-bla bla bla
I am wondering how much room I have to upgrade before changing my power supply.
Here is what some day might be put into it.
-More RAM up to 6 or 8 GB
-More Hard drive up to an extra 1.5 TB
-1or 2 more case fans
maybe...
a new video card but that can wait.
So my question is how much room til my computer blows up, I know you dont want to be cheap, and I want top be safe. So what is the best course of action as far as saving money on a power supply and upgrading my computer parts?Is my power supply enough?
Simply no because, 1) You're Video card will need 400W on its own and your RAM will most definitly take up the rest. Now, although your GPU will not use all that wattage, it still needs a certain amount of volts and some smaller PSUs don't have enough voltage to keep up your GPU etc.try either a 550 or a 600W, those, regardless of what other %26quot;experts say%26quot;, are big enough.Is my power supply enough?
http://www.thermaltake.outervision.com/P
check here
you put in your components and it tells you how many watts your useingIs my power supply enough?
actually your 430 power supply is enough to run your computer but it would be more powerful if you will make it 500watts...for more questions just email me...
-500GB hard drive
-4 GB (in 2 sticks) RAM
-Nvidia GeForce 9500 GT video card (no fan)
AMD Athlon xII (dual core) (2.9 GHz)
-2 case fans
-obviously processor fan
-1 disk drive
-bla bla bla
I am wondering how much room I have to upgrade before changing my power supply.
Here is what some day might be put into it.
-More RAM up to 6 or 8 GB
-More Hard drive up to an extra 1.5 TB
-1or 2 more case fans
maybe...
a new video card but that can wait.
So my question is how much room til my computer blows up, I know you dont want to be cheap, and I want top be safe. So what is the best course of action as far as saving money on a power supply and upgrading my computer parts?Is my power supply enough?
Simply no because, 1) You're Video card will need 400W on its own and your RAM will most definitly take up the rest. Now, although your GPU will not use all that wattage, it still needs a certain amount of volts and some smaller PSUs don't have enough voltage to keep up your GPU etc.try either a 550 or a 600W, those, regardless of what other %26quot;experts say%26quot;, are big enough.Is my power supply enough?
http://www.thermaltake.outervision.com/P
check here
you put in your components and it tells you how many watts your useingIs my power supply enough?
actually your 430 power supply is enough to run your computer but it would be more powerful if you will make it 500watts...for more questions just email me...
Changing computer power supply...
Are all power supplies compatible with all computers?
If not, how do i find out which one is suitable for mine?
i want to upgrade my ~350watt to 500watt.Changing computer power supply...
Whatever you do get a PSU that has a 20/24 pin plug,just in case your main board has a 20 pin plug.
Look in the link and pick what you think is best for you.
If not, how do i find out which one is suitable for mine?
i want to upgrade my ~350watt to 500watt.Changing computer power supply...
Whatever you do get a PSU that has a 20/24 pin plug,just in case your main board has a 20 pin plug.
Look in the link and pick what you think is best for you.
How do i change the voltage if my computers power supply?
Apparently there was supposed to be a little switch on the back of it, but i've just taken it apart now and there isn't one. I've also checked in the bios and theres nothing about it there either,How do i change the voltage if my computers power supply?
Many power supplies do NOT have the switch. Also almost NO desktops or towers have multi-voltage supplies. You will need to fit a new one. Laptops are the only machines which have multi-voltage supplies. It is dangerous to take advice from someone who say %26quot;it is probably ....%26quot; to do this will PROBABLY destroy your machine.How do i change the voltage if my computers power supply?
With the difference in voltage of the switch this would either stop the machine if set too low, or blown it up if set too high. Do NOT paly with things you do not understand.
if there isnt a switch it most likely takes both euro and american voltages (110-240)
my old one had a switch but my new one doesnt, go figure :)How do i change the voltage if my computers power supply?
The switch on the back is for the AC input voltage, and does not affect the resulting DC current which the power supply produces. If you were to switch it to run on 230v in the united states, your computer will not boot, and could possibly damage hardware.
115v for USA, 230v for UK/Europe.
If it does not have a switch, you might have to read the label on the power supply itself. While some power supplies can automatically switch voltage, it would be safe to check.How do i change the voltage if my computers power supply?
as far as i know there is no more of those old power supplies which had 110 / 240 watt switches . (us - europe etc).
They should work on both without problems. Try reading the sticker on your power supply if it supports both. if it doesn't go to an electricity shop for a converter.How do i change the voltage if my computers power supply?
My guess is when you plug it in, it automatically senses the input voltage, and automatically adjusts.
Or, it is only for use in the US, and other countries that use 120V 60Hz.How do i change the voltage if my computers power supply?
If you do not have a switch then you can not change the voltage, it is as simple as that, you could check the power input label to see if it is a 110-240 volt 50hz-60hz in which case it would work any where, most lap top chargers have this facility.how do i turn on my computer background sturdy drive
Many power supplies do NOT have the switch. Also almost NO desktops or towers have multi-voltage supplies. You will need to fit a new one. Laptops are the only machines which have multi-voltage supplies. It is dangerous to take advice from someone who say %26quot;it is probably ....%26quot; to do this will PROBABLY destroy your machine.How do i change the voltage if my computers power supply?
With the difference in voltage of the switch this would either stop the machine if set too low, or blown it up if set too high. Do NOT paly with things you do not understand.
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How do i change the voltage if my computers power supply?if there isnt a switch it most likely takes both euro and american voltages (110-240)
my old one had a switch but my new one doesnt, go figure :)How do i change the voltage if my computers power supply?
The switch on the back is for the AC input voltage, and does not affect the resulting DC current which the power supply produces. If you were to switch it to run on 230v in the united states, your computer will not boot, and could possibly damage hardware.
115v for USA, 230v for UK/Europe.
If it does not have a switch, you might have to read the label on the power supply itself. While some power supplies can automatically switch voltage, it would be safe to check.How do i change the voltage if my computers power supply?
as far as i know there is no more of those old power supplies which had 110 / 240 watt switches . (us - europe etc).
They should work on both without problems. Try reading the sticker on your power supply if it supports both. if it doesn't go to an electricity shop for a converter.How do i change the voltage if my computers power supply?
My guess is when you plug it in, it automatically senses the input voltage, and automatically adjusts.
Or, it is only for use in the US, and other countries that use 120V 60Hz.How do i change the voltage if my computers power supply?
If you do not have a switch then you can not change the voltage, it is as simple as that, you could check the power input label to see if it is a 110-240 volt 50hz-60hz in which case it would work any where, most lap top chargers have this facility.
How would i change a 5.0 volt power supply into a 3.1 volt?
How would i change a 5.0 volt power supply into a 3.1 volt?
It is 400 mah+50Ma
dc 5.0 volt+.5v
I want to use a resister, i just need to know what kind.How would i change a 5.0 volt power supply into a 3.1 volt?
Well if you have a tester than you can easily find out what voltage you will get by picking up a several resistor's starting from 200 Ohm ending with 10 Ohm's or if you are good with electronics than you can soldier up the schematic diagram i just drew http://i370.photobucket.com/albums/oo148 it requires adjustable resistor with that you could regulate your needed power supply.
It is 400 mah+50Ma
dc 5.0 volt+.5v
I want to use a resister, i just need to know what kind.How would i change a 5.0 volt power supply into a 3.1 volt?
Well if you have a tester than you can easily find out what voltage you will get by picking up a several resistor's starting from 200 Ohm ending with 10 Ohm's or if you are good with electronics than you can soldier up the schematic diagram i just drew http://i370.photobucket.com/albums/oo148 it requires adjustable resistor with that you could regulate your needed power supply.
How can I check my pc power supply rating?
Hi.... I want to upgrade my gfx card in my new HP Quad from a 9300GE 512MB to a 8800GT or similar.
I think my pc is 300w ? Not sure though...how can I check?
- If my pc is 300w, can I get a sweet gfx card that is also 300w?
- If the new gfx card is higher than 300w, will it still work in my pc?
- If I have to make do with the 9300GE... how can I overclock it, or milk the pc without making it unstable? Is there a EASY to use program out there to safely overclock?
I don't want to change the power supply unless it's absolutely necessary coz' I'll also have to change the mobo and whatever? (true???)... and I think it will void my HP warranty. (Defeating the purpose of buying HP to start with!)
What are my options? Please HELP!
Thanks. :) How can I check my pc power supply rating?
Okaaay!
1.The Nvidia GeForce 8800GT will need 425 watts. This is the Minimum wattage. It also needs a PCI-Express 6 pin connector.
(This is what a PCI-Express 6 pin connector looks like,
http://www.playtool.com/pages/psuconnect
5th row down, first photo. 6 pin PCI-Express power cable.
It also needs at least 28 amp's on the 12 volt rail, on the power supply. (This can be if you just have one 12v rail, or combined amp's of two 12v rails, to equal 28 amp's)
This is the XFX GeForce 8800GT. Doesn't matter what company makes this version, of the Nvidia line of 8800GT graphics cards.
(Scroll down this page to about halfway. Look under the heading Minimum System Requirements)
http://www.tigerdirect.com/applications/
You CAN change the power supply, and not worry about changing the mobo. The only time you would even want to consider this, in THIS situation, is because HP changed the wires around in the 20/24 pin ATX motherboard connector. IF they put the wires that should follow a standard placement, in this socket, in different holes. (Not standard placement, in otherwords) (Won't be wires in the socket holes, of course. What I'm trying to explain, is that the wires that come out of the power supply, that go into this 20/24 pin motherboard socket, go into different holes in the socket. Different than the standard setup for this, is. Here is the standard placement of where the wires go, in this socket, (Connector)
http://www.playtool.com/pages/psuconnect
On the above link from Playtool.com, scroll about halfway down the page. Look under the heading -%26gt;ATX 20 pin main power cable %26lt;- ,and also further down under the heading -%26gt; ATX 24 pin main power cable. There's a chart under the photos for both headings. Pin 1 on the connector is on the opposite side of the plastic lock tab. It has a Black wire next to it. You can't see it in the photo. Pins 1 thru 12 are on this side. Pins 13 thru 24 are on the lock tab side. You can see Pin 13 with an Orange wire in it, and PIn 14 has a Blue wire in it.
If the connector from your power supply has wire insulation colors, that do not match these charts, (I don't know if you have an ATX 20 pin main power cable, or a 24 pin one), you'll have to 'tech' up. If you buy a power supply from somewhere else than HP, you need to change the wires around in the ATX main power cable's connector. It's not that tough!
The wires that go into the ATX main power cable connector, go into individual sockets. At the end of each wire is a metal connector. It has a tab that sticks up, at angle on one side. You take a large needle, and stick it down in the socket hole. It goes in the side, that would connect to the motherboard's connector.
Opposite of the side the wires come in. The needle pushes the tab that's sticking up, down. Then you can pull the wire out. Ease the tab up enough so that it's at an angle, and plug it into the appropriate socket hole.
Yeah, I know! A lot of info! You probably won't encounter this. HP probably put the wires in the standard setting, and you just need to replace the power supply. 8 yr old kids do this, so I know you can. (Good thing they're not 5th graders, huh? %26quot;Are you smarter than a 5th grader?%26quot; Seen that show? Eh,....well never mind)
http://www.fonerbooks.com/r_power.htm
Suggestion for a power supply?
http://www.tigerdirect.com/applications/
Detailed info on this power supply.
http://www.hardwaresecrets.com/article/4
(If you don't want to muddle through all ten pages, it's cool! Jump ahead to page 10 though, and read the conclusion)
Changing the graphics card itself, may void the warranty, much less changing the power supply. Can't recommend you go ahead with either one. HOWEVER, you may want to check those who have used this 'warranty'. It's about as good as printing it on a piece of toilet paper! After you haggle, and haggle with them, and if you win, you wait, and wait for the repair to be done!
Could be WHY, I don't buy pre-built computers, and build my own! I have the same warranty they do on parts, as the people who sell the parts warranty them also. (I also build slam-it-to-the-wall gamer computers, that they couldn't touch, unless I want to let go of $3500 bucks, instead of $1200!)
All the Kick-A, graphics cards need about a 425 watt Psu. It has to support the graphics card, and your system resources.
Nvidia or ATI. The ATI one's need less amps on the 12 volt rail, though!How can I check my pc power supply rating?
Open the side cover of the tower casing ---inside you will see a metal box at the top with a lot of wire coming out of it which is the power supply
there is a label on it which says how many watts its rated.
No you dont have to change the mobo for a new power supply
its best not to overclock the video card to prevent overheating problems.
a 500W power supply should be ideal for a GeForce 8800 GT cardHow can I check my pc power supply rating?
Well, the new card is definitely going to hog down more power. If you cannot open your computer without voiding the warrenty, I wouldn't do the upgrade right now if I were you. I hate to say it, but you are going to need a bigger power supply than a 300 Watt.
I would think you would need a 500 Watt, since the 8800 GT can suck down around 250 watts alone, so you see, that little 300 Watt PSU isn't big enough to handle the 8800 GT card.
I think my pc is 300w ? Not sure though...how can I check?
- If my pc is 300w, can I get a sweet gfx card that is also 300w?
- If the new gfx card is higher than 300w, will it still work in my pc?
- If I have to make do with the 9300GE... how can I overclock it, or milk the pc without making it unstable? Is there a EASY to use program out there to safely overclock?
I don't want to change the power supply unless it's absolutely necessary coz' I'll also have to change the mobo and whatever? (true???)... and I think it will void my HP warranty. (Defeating the purpose of buying HP to start with!)
What are my options? Please HELP!
Thanks. :) How can I check my pc power supply rating?
Okaaay!
1.The Nvidia GeForce 8800GT will need 425 watts. This is the Minimum wattage. It also needs a PCI-Express 6 pin connector.
(This is what a PCI-Express 6 pin connector looks like,
http://www.playtool.com/pages/psuconnect
5th row down, first photo. 6 pin PCI-Express power cable.
It also needs at least 28 amp's on the 12 volt rail, on the power supply. (This can be if you just have one 12v rail, or combined amp's of two 12v rails, to equal 28 amp's)
This is the XFX GeForce 8800GT. Doesn't matter what company makes this version, of the Nvidia line of 8800GT graphics cards.
(Scroll down this page to about halfway. Look under the heading Minimum System Requirements)
http://www.tigerdirect.com/applications/
You CAN change the power supply, and not worry about changing the mobo. The only time you would even want to consider this, in THIS situation, is because HP changed the wires around in the 20/24 pin ATX motherboard connector. IF they put the wires that should follow a standard placement, in this socket, in different holes. (Not standard placement, in otherwords) (Won't be wires in the socket holes, of course. What I'm trying to explain, is that the wires that come out of the power supply, that go into this 20/24 pin motherboard socket, go into different holes in the socket. Different than the standard setup for this, is. Here is the standard placement of where the wires go, in this socket, (Connector)
http://www.playtool.com/pages/psuconnect
On the above link from Playtool.com, scroll about halfway down the page. Look under the heading -%26gt;ATX 20 pin main power cable %26lt;- ,and also further down under the heading -%26gt; ATX 24 pin main power cable. There's a chart under the photos for both headings. Pin 1 on the connector is on the opposite side of the plastic lock tab. It has a Black wire next to it. You can't see it in the photo. Pins 1 thru 12 are on this side. Pins 13 thru 24 are on the lock tab side. You can see Pin 13 with an Orange wire in it, and PIn 14 has a Blue wire in it.
If the connector from your power supply has wire insulation colors, that do not match these charts, (I don't know if you have an ATX 20 pin main power cable, or a 24 pin one), you'll have to 'tech' up. If you buy a power supply from somewhere else than HP, you need to change the wires around in the ATX main power cable's connector. It's not that tough!
The wires that go into the ATX main power cable connector, go into individual sockets. At the end of each wire is a metal connector. It has a tab that sticks up, at angle on one side. You take a large needle, and stick it down in the socket hole. It goes in the side, that would connect to the motherboard's connector.
Opposite of the side the wires come in. The needle pushes the tab that's sticking up, down. Then you can pull the wire out. Ease the tab up enough so that it's at an angle, and plug it into the appropriate socket hole.
Yeah, I know! A lot of info! You probably won't encounter this. HP probably put the wires in the standard setting, and you just need to replace the power supply. 8 yr old kids do this, so I know you can. (Good thing they're not 5th graders, huh? %26quot;Are you smarter than a 5th grader?%26quot; Seen that show? Eh,....well never mind)
http://www.fonerbooks.com/r_power.htm
Suggestion for a power supply?
http://www.tigerdirect.com/applications/
Detailed info on this power supply.
http://www.hardwaresecrets.com/article/4
(If you don't want to muddle through all ten pages, it's cool! Jump ahead to page 10 though, and read the conclusion)
Changing the graphics card itself, may void the warranty, much less changing the power supply. Can't recommend you go ahead with either one. HOWEVER, you may want to check those who have used this 'warranty'. It's about as good as printing it on a piece of toilet paper! After you haggle, and haggle with them, and if you win, you wait, and wait for the repair to be done!
Could be WHY, I don't buy pre-built computers, and build my own! I have the same warranty they do on parts, as the people who sell the parts warranty them also. (I also build slam-it-to-the-wall gamer computers, that they couldn't touch, unless I want to let go of $3500 bucks, instead of $1200!)
All the Kick-A, graphics cards need about a 425 watt Psu. It has to support the graphics card, and your system resources.
Nvidia or ATI. The ATI one's need less amps on the 12 volt rail, though!How can I check my pc power supply rating?
Open the side cover of the tower casing ---inside you will see a metal box at the top with a lot of wire coming out of it which is the power supply
there is a label on it which says how many watts its rated.
No you dont have to change the mobo for a new power supply
its best not to overclock the video card to prevent overheating problems.
a 500W power supply should be ideal for a GeForce 8800 GT cardHow can I check my pc power supply rating?
Well, the new card is definitely going to hog down more power. If you cannot open your computer without voiding the warrenty, I wouldn't do the upgrade right now if I were you. I hate to say it, but you are going to need a bigger power supply than a 300 Watt.
I would think you would need a 500 Watt, since the 8800 GT can suck down around 250 watts alone, so you see, that little 300 Watt PSU isn't big enough to handle the 8800 GT card.
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