Re: Will it explode?
You can put in 50A rectifier but it does not mean you will get 50A out if the transformer and the drive circuit are not designed to put out 50A. You always use higher rating component than what you need.
'130w max +3.3V & +5V combined rating' come from? That sure is confusing.
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Re: Will it explode?
OK so (just to be sure) where does exactly this '130w max +3.3V & +5V combined rating' come from?
This PSU has one 30A rectifier on +3.3V (30A * 3.3V = 99W) and one 30A rectifier on +5V (30A * 5V = 150W).
99W +150W = 249W
So it's not from the rectifiers.Leave a comment:
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Re: Will it explode?
Isn't that a rather cheapishly CWT plattform?
Besides, some math:
5*19= 95W
minor rails combined = 130W.
Something wrong here is...
Because 3V3 is often generated out of the +5V rail, so it should be at least 130/5 = 26A
But then again, the rail distribution can be specified by rolling the dice...Leave a comment:
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Will it explode?
Suppose this PSU, whose label says '19A max on +5V':
But that as a matter of fact comes with one 30A rectifier on +5V, of this model:
Then suppose I use it to power an old Athlon XP system without 'P4' connector on the mobo, meaning the CPU draws all its juice from +5V (as opposed to from +12V like modern stuff).
Thus total system draw is something like say 25A from +5V, 5A from +12V, and 5A from +3.3V.
Will that PSU cope with, or will it bust?
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Hey guys
I got a Lenovo Legion Y7000P IRX9 with no fan power.
Found a shorted line, IC explode.
No boardview or schematics available, but i'm unable to identify it to be able to replace.
​Can someone assist ? ... -
I did a cell salvage run on some Dyson batteries to build out a new fleet of Milwaukee batteries and the yield was a lot higher than expected, so I now have a lot of extra Sony VTC4s that are in reasonably good health. I'd like to build them into power banks, there's a glut of shells for 18650s on AliExpress but I don't know which are any good (read: won't explode). Can anyone recommend some (especially the ones that just fit a single cell)? Weld or weldless are fine, I have a spot welder
I suppose USB-PD and/or quick charge would be desirable too
Cheers -
Hi guys!
Firstly, I will apologize if my topic is in the wrong section, please move it if necessary.
I want to repair one treadmill from the brand Horizon the model is Omega II. Practically, the motor power control board has suffered one damage.One mosfet has blown and I suppose by doing that, the short circuit has damaged a couple of diodes, one zener diode and two transistors. I hope that is all. I will find out when I will put them all back on board. I have dismantled and cleaned the rotor of the DC motor, tested it, and it seems to be working properly. I suppose it was water... -
Hello everyone,
I've got a Benq power board of a XL2540K monitor which suffered from a power cut and is since defective / won't turn on. It's got obvious defects, some blown resistors, some burning around the drain pin of a MOSFET...
... and some 6-pin IC I struggle identifying, that is driving said MOSFET.
The IC is labeled as IC601, so someone with a circuit schematic could probably identify it really quick, unfortunately I can't find the schematics.
In other power boards of Benq for which I did find the schematics, IC601 is an 8-pin NCP1200 PWM controller - I suppose... -
Hi all,
I have an old Apple II monitor to restore and I do have a big variac. I've always wondered whether a variac is a good idea to power on equipment which has been unpowered for (likely) decades?
When it comes to analogue stuff, I suppose it's ok and I'm probably going to see the device slowly coming back to life with a lower voltage applied.
But I suppose this won't work for devices with digital components in it as they won't work unless the proper voltages are applied?
In case of an old monitor, it is safe/good for the monitor to...10-13-2023, 02:47 AM
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