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| General Reef Discussion In this forum we discuss issues related to keeping marine and reef aquariums in a friendly flame-free environment. |
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05-26-2006, 08:20 PM
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#1
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Ghost of reefers past
Join Date: Jan 1999
Location: Southern Oregon, Way West of Dimples ;)
Posts: 25,137
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Electrical Question
OK having a brain F@** here, I cant remember the folula for converting amps to volts. Heres my dilema, have a Sony Vaio laptop, the power supply is 19.5VDC @ 6.15 amps, will a 75 watt inverter run this so the kids can watch DVDs on the laptop on the road?
Thanks , leavin in a hr or so so need an answer quick, Thanks Guys 
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__________________
Cowboy is a verb, not a noun
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05-26-2006, 08:26 PM
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#2
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Great Hammerhead Shark
Join Date: May 2006
Location: Southern United States
Posts: 1,464
Reviews: 31
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Watts = Amps x Volts
Watts / Amps = Volts
Watts / Volts = Amps
Ohms = Volts / Amps
I hope this helps
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05-26-2006, 08:32 PM
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#3
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Little Fishy
Join Date: Jul 2002
Location: Puyallup, WA
Posts: 178
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Sorry, but 75 watts just wont cut it doug. your laptop is using almost 120watts. you just have to multiply the Amps x Volts = watts.
hth
~Randy~
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05-26-2006, 08:45 PM
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#4
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Ghost of reefers past
Join Date: Jan 1999
Location: Southern Oregon, Way West of Dimples ;)
Posts: 25,137
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So I need 150 watt inverter minimum?
__________________
Cowboy is a verb, not a noun
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05-26-2006, 08:49 PM
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#5
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squid
Join Date: Jan 2006
Location: Santa Cruz
Posts: 8
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I think you're going to need a lot more than that.
My experience is that those power inverters are optimistic ratings. That's the max power rating for the device, not the optimal. If you operate at the max it will get too hot, and/or or fail randomly.
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05-26-2006, 08:52 PM
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#6
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Little Fishy
Join Date: Jul 2002
Location: Puyallup, WA
Posts: 178
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And comming from you car's engine, the power will not be nearly as stable as a wall plug. I'd go with 200+
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05-26-2006, 08:53 PM
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#7
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Ghost of reefers past
Join Date: Jan 1999
Location: Southern Oregon, Way West of Dimples ;)
Posts: 25,137
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Thats OK Apperently I cant spell formula either, Jeez I can't believe they would pick such a wierd voltage 19.5 rater than 12 VDC 
Its not my laptop, its my daughters as I am not going to go buy a 250 Inverter just for it,
Thanks for the info guys
__________________
Cowboy is a verb, not a noun
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05-26-2006, 09:01 PM
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#8
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Little Fishy
Join Date: Jul 2002
Location: Puyallup, WA
Posts: 178
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Have a safe drive Doug!
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05-26-2006, 09:05 PM
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#9
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Great Hammerhead Shark
Join Date: May 2006
Location: Southern United States
Posts: 1,464
Reviews: 31
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just to let you know I purchased a 800 watt marine inverter from sams for 28.00
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05-26-2006, 09:07 PM
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#10
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Little Fishy
Join Date: Jul 2002
Location: Puyallup, WA
Posts: 178
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thats a great deal, Costco carries a big one Doug, just not sure on the specs. since there is no Sams near by.
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05-26-2006, 09:11 PM
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#11
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Ghost of reefers past
Join Date: Jan 1999
Location: Southern Oregon, Way West of Dimples ;)
Posts: 25,137
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I dont think we have Sams here, Wally World , but no Sams
Costco is in Medford, the other Direction
__________________
Cowboy is a verb, not a noun
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05-26-2006, 09:16 PM
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#12
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Ghost of reefers past
Join Date: Jan 1999
Location: Southern Oregon, Way West of Dimples ;)
Posts: 25,137
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__________________
Cowboy is a verb, not a noun
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05-26-2006, 09:28 PM
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#13
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Little Fishy
Join Date: Jul 2002
Location: Puyallup, WA
Posts: 178
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That will definatly work! I'll cross my fingers for you!  |
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05-26-2006, 09:36 PM
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#14
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Ghost of reefers past
Join Date: Jan 1999
Location: Southern Oregon, Way West of Dimples ;)
Posts: 25,137
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I stop in and see if they have it or similar
__________________
Cowboy is a verb, not a noun
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05-26-2006, 10:04 PM
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#15
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Look deeply into my eyes
Join Date: Aug 2001
Location: Location, Location
Posts: 12,042
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Doug , you should luck out finding a suitable one,,,,,if not at one of the big box stores,,,,,i notice even in the Pepboys Auto Parts ads in the paper, they have 'em too,,,,
Randy , is that a wirehaired Doxie you have in your avatar?
I'll be darned if yours don't exactly like one of ours (we have 4) Mini Doxies here! Even that look from the eyes,,,,,LOL. I'll have to find a pic of our lil girl here, and post it, so we can compare,,,,,,it's like they say, you have a exact twin somewhere in the world, looks like it works fer dogs , too! 
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Jeff
1st generation J-Crowd member
PRG Member since '09
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