Over the last few years, the use of nanomaterials for water treatment, food packaging, pesticides, cosmetics and other industries has increased. For example, farmers have used silver nanoparticles as a pesticide because of their capability to suppress the growth of harmful organisms. However, a...
...1.15A at room temperature of 20 degree C? the field winding of a dc motor connected across a 230 V supply takes 1.15A at room temperature of 20 degree C . after working for some hours the current falls to 0.26A , the supply voltage remaining constant . calculate the final working temperature...
Consider a DC motor driven by a DC supply. When supply voltage is suddenly reduced back emf becomes momentarily more than the supply voltage, which should drive a current in the circuit opposing the polarity of the supply. Will this damage the DC supply due to wrong polarity?
I don't really know what the fans called but its the one under the power supply. Its not the CPU fan because that one works perfectly. Also the PSU fan works perfectly too. Its the one that lets all the heat out.
I installed the E8400 CPU a week ago. And the fan under the cpu stooped working...
Studied for decades for their essential role in making proteins within cells, several amino acids known as tRNA synthetases were recently found to have an unexpected - and critical - additional role in cancer metastasis in a study conducted collaboratively in the labs of Karen Lounsbury, Ph.D...
Sharp has just announced that it's getting a $110 million shot in the arm from Samsung. In turn, that will help guarantee Sammy as many LCD panels as it can use. More »
I want to design a UPS system which can help me charge my mobile phone when there is a power failure... The system will give an output of 5V DC regulated supply ..Now i want to know if i can connect my mobile charging adapter to the 5V output directly? As i dont want to risk my mobile phone by...
My phone is a Sony Xperia.
For example, at any given time, the battery voltage is reported as 3.915V. Now, when I plug in the charger, the voltage is reported to be 3.810V. When I plug out, the voltage increases again to 3.915V.
Why does the reported voltage decrease when I plug in the...
I want to know is it advisable to use a laptop computer as far as possible on DC Power (Direct Power instead of Battery power) or one should use laptop computer same as our Mobile phone (On Battery power and should plug in only when battery is low on power).
Because i receive options in favour...
I have a dc power supply with red, green, & black terminals I also have a clip cord with x2 wires & a peddle with x2 wires(red&white) (these have no plug on the ends so they can go on this power pack)
How do I hook these up so I can power my tattoo gun by pressing down on the peddle and...
If you're a meat lover, you may be out of luck in about 50 years. Why? To put it very simply: the world just doesn't have enough water*to support your diet. Our*water supply is dwindling, and the diet of a meat and dairy eater uses considerably more water than that of a vegetarian. More »Post...
Hi, i have a Medion md8393 desktop PC and need to find out the wattage of the power supply to see if i can upgrade the gfx card without also upgrading the power supply, i've had the machine open and there is nothing on the power supply to say what it puts out, no name or anything, not even a...
I'm looking to replace my Delta gps 400BB A power supply in order to provide the power needed for a NVIDIA GeForce GTX 570 graphics card. Would a Corsair TX650 V2 be a reasonable option to support this card?
Corsair link: http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020
ok so me and my friend build a pc and got done with it but i was wondering somethings.. does the power supply fans moves/spins when the pc turn on because my power supply fans are not spinning?
my friend told me they only move if the inside gets hot? is that true...?
is this normal?
this is...
ok so me and my friend build a pc and got done with it but i was wondering somethings.. does the power supply fans moves/spins when the pc turn on because my power supply fans are not spinning?
my friend told me they only move if the inside gets hot? is that true...?
is this normal?
this is...
I was looking online and i saw a popquiz Herschel backpack and then i saw a Settlement backpack whichone should i buy (not worrying about the price) and what color its for school were we can wear white black and red shirts and black and khali pants plese help
I want to build 12v dc power supply, but i do not want to use 7812 regulator. So which transformer should i use to get 12v dc, after converting its ac voltage into dc through diode bridge and capacitor. 12v ac transformer or any other?