I just finished building my PC like a week ago. I just noticed there is a faint buzzing noise while playing a game (the noise also comes out from my speakers). I tried to pinpoint the noise and turns out it's coming from inside my computer.
The buzzing noise sounds like it's coming from either power supply or graphic card.
I have to calculate the ripple voltage of four different capacitors in a power supply. the power supply is a transformer, bridge rectifier, load resistor and capacitor would go across the load.
I used multisim to simulate the circuit. I looked at the ripple which has a peak to peak value.
my question is, to get the mean dc value, what is the formula for this.
I have to replace a very old UPS. We've got a new one. I'm not really a sys admin, but have to act the part, as the previous one left and, well there's no one else. He had it set up with 2 UPS's, and split the power supplies from each server (5 total) so that 1 power supply went to 1 UPS, and the other power supply went to the second UPS. We've got the new UPS in place.
I need to artificially test a power supply up to around 1000W. I also need to know how much power the PSU is outputting. I have created a load using some electric toaster wire, but I have no idea exactly how much power is being used.
My question is how can I create a 1000W DC load that can be measured to ±10W, hopefully on the cheap side?