Home |
Search |
Today's Posts |
|
Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to sci.electronics.repair
|
|||
|
|||
laptop AC adapter tolerances
Any one know what approximate tolerances are on these things please?
I have a laptop without an adapter which takes a 19 volt 3.2 amp adapter. I have a 20v 6.5 amp one and wonder how much damage it will do to the laptop if I try to use it? The unit does not have a battery to charge so this adapter will likely be plugged in a lot of the time. |
#2
Posted to sci.electronics.repair
|
|||
|
|||
laptop AC adapter tolerances
On Thu, 09 Dec 2010 11:35:31 -0800, Amanda Ripanykhazov wrote:
Any one know what approximate tolerances are on these things please? I have a laptop without an adapter which takes a 19 volt 3.2 amp adapter. I have a 20v 6.5 amp one and wonder how much damage it will do to the laptop if I try to use it? The unit does not have a battery to charge so this adapter will likely be plugged in a lot of the time. I've used a 90 watt 20 volt adapter on a laptop which requires 19 volts at 55 watts for maybe 2 years now with no apparent damage. 1 volt isn't likely to be an issue and the laptop will not consume more power than it needs. -- Live Fast, Die Young and Leave a Pretty Corpse |
#3
Posted to sci.electronics.repair
|
|||
|
|||
laptop AC adapter tolerances
Thanks for that, I wasnt su I knew that the 6A wouldn't be a
problem as the unit doesn't consume any more amps than it needs but didnt know that if it only needed 19v, the adapter wouldnt just keep on pumping 20v into it I've used a 90 watt 20 volt adapter on a laptop which requires 19 volts at 55 watts for maybe 2 years now with no apparent damage. 1 volt isn't likely to be an issue and the laptop will not consume more power than it needs. -- Live Fast, Die Young and Leave a Pretty Corpse |
#4
Posted to sci.electronics.repair
|
|||
|
|||
laptop AC adapter tolerances
On Thu, 09 Dec 2010 12:20:44 -0800, Amanda Ripanykhazov wrote:
Thanks for that, I wasnt su I knew that the 6A wouldn't be a problem as the unit doesn't consume any more amps than it needs but didnt know that if it only needed 19v, the adapter wouldnt just keep on pumping 20v into it Regulation on a lot of supplies is within a volt anyway. Unless the charging/distribution electronics of the laptop are poorly designed I wouldn't anticipate one extra volt being any problem. I've been using an HP 20 volt supply on a Toshiba that ran on 19 and like I said no problems after a couple years. I'm also using a 19 volt Dell supply on an Asus that takes 19 volts. However when measured the 19 volt supply outputted almost 20 volts. There are no + - tolerance specs printed on the side of the supply. If it were plus or minus 5 % that would be pretty close to one volt either way on 19 volt output. I've used a 90 watt 20 volt adapter on a laptop which requires 19 volts at 55 watts for maybe 2 years now with no apparent damage. 1 volt isn't likely to be an issue and the laptop will not consume more power than it needs. -- Live Fast, Die Young and Leave a Pretty Corpse -- Live Fast, Die Young and Leave a Pretty Corpse |
#5
Posted to sci.electronics.repair
|
|||
|
|||
laptop AC adapter tolerances
On Dec 9, 1:35*pm, Amanda Ripanykhazov
wrote: Any one know what approximate tolerances are on these things please? I have a laptop without an adapter which takes a 19 volt 3.2 amp adapter. I have a 20v 6.5 amp one and wonder how much damage it will do to the laptop if I try to use it? The unit does not have a battery to charge so this adapter will likely be plugged in a lot of the time. A tolerance of at least 10% would be reasonable, so 19.0 + 1.9 = 19.9 which is almost 20V. 20V - 2.0 V = 18V for the minimum on the 20V supply, so you should be just fine. |
#6
Posted to sci.electronics.repair
|
|||
|
|||
laptop AC adapter tolerances
wrote in message ... On Dec 9, 1:35 pm, Amanda Ripanykhazov wrote: Any one know what approximate tolerances are on these things please? I have a laptop without an adapter which takes a 19 volt 3.2 amp adapter. I have a 20v 6.5 amp one and wonder how much damage it will do to the laptop if I try to use it? The unit does not have a battery to charge so this adapter will likely be plugged in a lot of the time. A tolerance of at least 10% would be reasonable, so 19.0 + 1.9 = 19.9 That was 20.9, when I went to school ... ;-) Arfa which is almost 20V. 20V - 2.0 V = 18V for the minimum on the 20V supply, so you should be just fine. |
#7
Posted to sci.electronics.repair
|
|||
|
|||
laptop AC adapter tolerances
On Fri, 10 Dec 2010 01:56:08 -0000, "Arfa Daily"
wrote: wrote in message ... On Dec 9, 1:35 pm, Amanda Ripanykhazov wrote: Any one know what approximate tolerances are on these things please? I have a laptop without an adapter which takes a 19 volt 3.2 amp adapter. I have a 20v 6.5 amp one and wonder how much damage it will do to the laptop if I try to use it? The unit does not have a battery to charge so this adapter will likely be plugged in a lot of the time. A tolerance of at least 10% would be reasonable, so 19.0 + 1.9 = 19.9 That was 20.9, when I went to school ... ;-) Arfa which is almost 20V. 20V - 2.0 V = 18V for the minimum on the 20V supply, so you should be just fine. New math. PlainBill |
#8
Posted to sci.electronics.repair
|
|||
|
|||
laptop AC adapter tolerances
On Dec 10, 2:01*pm, wrote:
On Fri, 10 Dec 2010 01:56:08 -0000, "Arfa Daily" wrote: wrote in message .... On Dec 9, 1:35 pm, Amanda Ripanykhazov wrote: Any one know what approximate tolerances are on these things please? I have a laptop without an adapter which takes a 19 volt 3.2 amp adapter. I have a 20v 6.5 amp one and wonder how much damage it will do to the laptop if I try to use it? The unit does not have a battery to charge so this adapter will likely be plugged in a lot of the time. A tolerance of at least 10% would be reasonable, so 19.0 + 1.9 = 19.9 That was 20.9, when I went to school ... *;-) Arfa which is almost 20V. * 20V - 2.0 V = 18V for the minimum on the 20V supply, so you should be just fine. New math. PlainBill Actually I see the maths differently, though given the responses which say that it is OK and has been shown to be OK over a few-year period, the result is the same: If a laptop takes 19 volts, can I use a converter over a prolonged period which could put out a continuous 22 volts? |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|