Greetings to all, and particularly to Bruce and Clark, who graciously responded to my queries. This is a sort of semi-compilation of the answers I've been getting re: this thread. My answers are below the corresponding subject
On 1/14/10 6:24 PM, Bruce Johnson of [email protected] sent > > On Jan 14, 2010, at 4:17 PM, Dana Collins wrote: > >> Hi Bruce, >> How would one check the wattage if that spec is not on the adapter, >> as is >> the case with both of my (Apple) adapters? >> Thanks much, >> Dana > > > > Not a clue. Mine says right on the bottom of the yo yo part "Apple 45W > Power Adapter", model M7332. > > Is there no markings on them? (response) Interesting... I never noticed, i.e. Both of my Yo-Yo adapters, one for the Clamshell, one for the iBook, have different heads, but both are listed as model M7332. The print on the back is different also. Like Bruce's model, the Clamshell version clearly states "Apple 45W Power Adapter", the iBook model states "Apple Portable Power Adapter" with no overt mention of wattage. Other detailed electrical specs appear the same. I presume the size of the contact head is simply a target-model-specific design issue, and not an electrical retooling. I have a third power adapter, a square white one, I am guessing for later G3 and G4 iBooks, an M8482 model no. It also states "Apple Portable Power Adapter" with no overt mention of wattage. Voltage and amperage is equivalent to the Yo-Yos. >>> >> Check the wattages of them...iirc, there was one model that was a >> lower wattage than the other...that one could not both run the >> computer and charge the battery. It'll charge the battery if the >> system is asleep or off, though. >> Hi Bruce, >> How would one check the wattage if that spec is not on the adapter, as is >> the case with both of my (Apple) adapters? > On 1/14/10 6:59 PM, Clark Martin of [email protected] sent >If it lists the DC output current and voltage then just multiply the two >together to get wattage. (response): So, 24V X 1.875A = 45 Watts, yes? Or V(n) X A(n) = W(n)? > AFAIk all the Yoyos were 45 watts. > > And all Apple laptop power adapters with that style plug, of either > size, had a minimum rating of 45 watts WITH the exception of some or all > Duo adapters which were 36 watts. (response): So, the original poster's concern (accidentally plugging in his iBook PSU into his Pismo, and worried about electrical consequences) would have been moot? Best regards, Dana
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