Power supply VERY HOT?

Is it just mine unit, or is the little power supply brick really hot...just noticed it when my bare foot ran over it... i thought I burned myself.... let me know....

EDIT: After a quick crude test, I can't hold my bare foot ontop of the power supply brick for more then 5 seconds, otherwise it feels like it's burning my foot... ??? This doesn't sound right does it??? Mind you I've been running some intense graphic/cpu apps...I'll check it out with just browsing..

 

if its not gonna burn out, you are fine! Don't worry, if you are worried, put a fan on there, problem solved!
however, I have not heard of something running THAT hot! if you can only hold it for 5 seconds, it is probably around 70 degrees celcius. or to be on the lower side, it is 60. good luck, and hope that psu doesn't burn out. Just make sure it is not going to kill you or your laptop, and you will be on the safe side.
:lol:

 

Nope. If you can touch at it and hold for some seconds, then it is around 50ºCelsius and the electronics inside are safe. It is quite warm, but not 'hot'.

At 60C you are not able to hold your skin on the thing but you can touch it (feels like burning), at 70C it starts to actually burn.

If all this worries you just take an infrared or termal probe and see...

Regards

Josep

 

really?
Wow! I learned something new there. so I was 10 C off estimate!

 

Mine's warm, definitely not hot!

 

Mine too. I can hold mine against my face and it's not at all uncomfortable.

 

Depends on the input voltage and if its charging or not.

DELTA ELECTRONICS, I ADP-30JH B CPA DTE EAD 081304-11

100V - 240V 1.2A
19v 1.58A

30Watts is not supposed to be TOO hot.

 

alright did some more testing based on the quote below:

1) When the battery is low and I am charging it with the unit OFF, the PS is in the warm range.
2) When the battery is low and I am charging it with the unit ON, the PS is in the hot range.
3) When the batttery is charged and I am using the unit or unit is off, the PS is cool.

So check it out...deplete the battery and start charging and using it (@1600Mhz all out - play some 3d games)) at the same time and let me know your results.

Oh btw my PS appears to differ slighly from yours, here's mine:
HIPRO BRAND: model HP-A0301R3 B1LF REV:01
INPUT:100-240V 1A 50-60Hz
OUTPUT: 19V 1.58A 30W

The model/brand name and input amperage seems to differ (mine is 1A and yours is 1.2A)

 

This has this easy explanation: the AA1 itself (cpu, hd, display, etc) consumes 10 W. The battery to be recharged needs 20 W.
We can estimate (i have not... yet... measured) those powers because we know the battery is around 2400mAh and lasts around 2'5h, so you have a 1000mAh=1Ah power going in, with 3cell (10V) this is around 10W. And she recharges in around 2h (but this is not linear, first hour goes for about 70%).
So...
1. you are taking 20 W from the psu.
2. you are taking 10+20=30 W from the psu.
3. you are taking just 10W from the psu.

Yes, at full rate (30W) the psu is not very efficient (gets very warm) but so are them those days...

Regards
Josep

 

I like that explaination! good job! Thanks!

 

You forgot that the power supply isn't 100% efficient. Thus if you're using delta powersupply on 110V power grid, you'll be looking at a maximum of another 80W going waste as heat or close to 200W wasted as heat if you're on 240V power grid. The delta powersupply has approximately 10% efficency at 240v and 25% efficency at 110V.

The other brand of powersupply has highier efficency.