Watts Power
Broad Screen Increased high AC Adapter Watts
As the development of broader laptop LCD screen, AC adapter have to afford more and more burden due to this change. More astonishing is that the power of the AC adapter has reached to 100W or so. That is almost equal to a small desktop computer’s power supply! Usually the 65w is more popular. Like my last HP
Dv5022ea AC adapter
, it’s the prevailing 65W.
It’s really annoying that this
Dv5022ea AC adapter
often get hot. Sometimes when I touched it by hand, it’s like a hot potato. I always had the feeling that whether it will burn or not. This is a question that bothered a lot of people! The truth is that Compaq, IBM such big companies over several times on the recovery of the power adapter, the fear that may be because the power supply design flaws, and lead to fire! In fact, as long as the power adapter is designed temperature range, that is, the temperature in the normal range generally is not dangerous!
So, why this HP
Dv5022ea AC adapter
radiate heat? What temperature range is the normal scope? In fact, conversion efficiency switching power supply can only meet about 75% -85%. The answer is here. Though switching power conversion efficiency is high enough, and is still difficult to find a better conversion. Switching power supply during voltage conversion, some energy loss lost, which in addition to a small part of the loss the form of waves, the majority are distributed by way of heat. Lack of large power switching power supply, loss of energy also lack much power also lacks of heat. This is why the desktop power supply to add a fan for cooling reasons. We may calculate that a 100W switching power supply, the use of energy loss when the number of the above. Therefore, switching power supply design and production, be sure to select the temperature of the components.
The current laptop power adapter’s power is usually about 60W to 90 W, sealed by fire-proof and heat proof plastics. Primarily the heat internally generated through the plastic shell. Therefore, the power adapter is of a very high surface temperature, maximum temperature even reached 70 degrees! No wonder that my
Dv5022ea AC adapter
like a hot potato.
There is no doubt that the inside temperature is higher enough to burn. Therefore, when we use a laptop, power adapter should be placed in the ventilation place and as far as possible from the heat.
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