Projecta incar laptop power adapters - voltage out by .5 of a volt

twr7cx · 10th August 2008, 3:18 PM

My Dad has a Compaq Presario C700 C793VU, now the power adapter for it is 18.5Volts and 3.5Amps. I've got a Projecta 3500mA Laptop Power Adaptor (see http://www.projecta.com.au/catalogue...4/asset_id/138 ). But the voltage adjustment is in incriments of 1 volt. So I can set it at 18 or 19v, but not 18.5. Does this mean I can't use it with this laptop, or can I just set it to 18v and try?

sanjay · 10th August 2008, 4:31 PM

should be fine on either 18 or 19v.

what you need to watch is the amperage. not enough, and its not good for the power circuitry in the laptop

in your case though it seems to be fine...

twr7cx · 12th August 2008, 2:59 PM

Quote:

Originally Posted by sanjay

what you need to watch is the amperage. not enough, and its not good for the power circuitry in the laptop

The next size up is 6.5 amps (http://www.projecta.com.au/catalogue...4/asset_id/139). Does this mean that it puts out 6.5amps regardless or that this is the maximum current that it can output? i.e. if I connected a 6.5 amp one to my laptop whose power pack outputs 3.5amps, wouldn't my laptop be damaged, or would it only draw the 3.5amps that it needs?

zebu · 12th August 2008, 3:16 PM

Quote:

Originally Posted by twr7cx

The next size up is 6.5 amps (http://www.projecta.com.au/catalogue...4/asset_id/139). Does this mean that it puts out 6.5amps regardless or that this is the maximum current that it can output? i.e. if I connected a 6.5 amp one to my laptop whose power pack outputs 3.5amps, wouldn't my laptop be damaged, or would it only draw the 3.5amps that it needs?

yeah thats the max it can provide. the laptop will only draw as much as it needs

it will be fine

10th August 2008, 3:18 PM	#1
twr7cx Member Join Date: Jul 2006 Location: Hobart Posts: 659	Projecta incar laptop power adapters - voltage out by .5 of a volt My Dad has a Compaq Presario C700 C793VU, now the power adapter for it is 18.5Volts and 3.5Amps. I've got a Projecta 3500mA Laptop Power Adaptor (see http://www.projecta.com.au/catalogue...4/asset_id/138 ). But the voltage adjustment is in incriments of 1 volt. So I can set it at 18 or 19v, but not 18.5. Does this mean I can't use it with this laptop, or can I just set it to 18v and try? __________________ Generally post items on Monday, Thursday or Fridays as I pass the post office on my way to work. Pick-up does not beat postage.

10th August 2008, 4:31 PM	#2
sanjay Member Join Date: Mar 2004 Location: Lockleys, Adelaide, SA Posts: 10,320	should be fine on either 18 or 19v. what you need to watch is the amperage. not enough, and its not good for the power circuitry in the laptop in your case though it seems to be fine... __________________ My Ride: MY02 Mitsubishi Ralliart Magna Build #75 - 5sp Manual, 2.5" exhaust with Pacemaker extractors, 17" Enkei Alloys Over 120 Successful Trades on OCAU - Most Recent: dche5390, Rugal, Tornhelm, ummmz, darknight84, bumography, b4sk3tb4ll3r, marktadros, MoveIt, Maxknott, NoBooze, bnyboy, Stooge007, caddy, the_rick, Soupratt, Doktor, Logik47, KraniX, Talisman, start, gizmo_melb, Omarko, Arkanite, WooKiE_MaN, PM for full list