LEDAdd1ct
Flashlight Enthusiast
I have an Aopen 4501 machine on order, used, with no power supply. Most of the websites that sell it list the correct adapter as being a power brick which supplies 20v DC at 4.5A. I have an adapter already which is rated for 19v DC at 4.74A.
20v * 4.5A = 90w
19v * 4.74A = 90w
After extensive googling, I've found two schools of thought:
1) One school of thought is that with sensitive electronics like computing equipment, even a small difference can spell trouble,
either overheating if the extra voltage has to be dealt with, or problems later on from "brownout" conditions.
2) The second school of thought is that the parts in a computer run off 12v, 5v, etc., all lower than the 20v supply. Since this is the case, there must be DC<-->DC conversion at work, and so, as long as the total power is the same, i.e., 90 watts, feeding it with 19v at 4.74A is fine.
3) Additionally, the product literature says it capable of a wide range of voltage inputs, from 12v to 20v. My guess is that if this is true, and I don't see why the OEM would lie, then I would be just fine with my 19v 4.74A power supply.
Here is the link to the specs. If you scroll just a little, you can see the rated power input range:
Link to OEM (Aopen)
---> What do you guys think? I am making a big deal out of nothing? Would my 19v 4.74 amp DC power supply be safe for continuous operation?
20v * 4.5A = 90w
19v * 4.74A = 90w
After extensive googling, I've found two schools of thought:
1) One school of thought is that with sensitive electronics like computing equipment, even a small difference can spell trouble,
either overheating if the extra voltage has to be dealt with, or problems later on from "brownout" conditions.
2) The second school of thought is that the parts in a computer run off 12v, 5v, etc., all lower than the 20v supply. Since this is the case, there must be DC<-->DC conversion at work, and so, as long as the total power is the same, i.e., 90 watts, feeding it with 19v at 4.74A is fine.
3) Additionally, the product literature says it capable of a wide range of voltage inputs, from 12v to 20v. My guess is that if this is true, and I don't see why the OEM would lie, then I would be just fine with my 19v 4.74A power supply.
Here is the link to the specs. If you scroll just a little, you can see the rated power input range:
Link to OEM (Aopen)
---> What do you guys think? I am making a big deal out of nothing? Would my 19v 4.74 amp DC power supply be safe for continuous operation?
Last edited: