|Re: Hewlett-Packatrd Battery Charger 82059D 115 VAC adapter for 220 VAC ?|
Message #2 Posted by Vieira. Luiz C. (Brazil) on 23 May 2005, 1:15 p.m.,
in response to message #1 by Chris Catotti (Florida)
Hi, Chris; long time no... read!
About using 115VAC chargers in 220VAC outlet with AC adapters, I've been using a standard 115VAC charger for the HP82143A (don't have it in hands, now) in 220VAC outlets for many years with a single 50Watt, 220/110VAC traveller adapter/converter. Had no problems so far. In fact, now with an HP97 for about two years, I've been using the same charger + adapter set with it. Based on power consumption while charging, I remember that 50Watt was more than enough to 'run' the original charger with no risk.
At least, that's what I've been using. You see, these adapters usually convert in a 2:1 rate, what gives 110VAC output for 220VAC input. If the original adaptor runs at 115VAC, this means that the common fase-neutral AC outlet with a 220VAC fase-to-fase characteristic voltage, delivers aproximatelly 10% more voltage (127VAC) than the specified 115VAC. In this case, the adaptors are even safer because they deliver about 5% below the specified voltage. This figure is acceptable if power consumption goes below the nominal specified for the adaptor/converter.
Hope it is not confusing, I tried to write the fewer possible...
Edited: 23 May 2005, 1:28 p.m.