I have not torn the chargers apart nevertheless; if I ought to acquire far more measurements, I don't need to obtain simply a pile of pieces. But I do have some preview shots to hold you about until finally my teardown report.
Out of your write up I settled about the HP contact pad charger- not just could it be in essence top rated of the class, but it's also Significantly more unlikely being counterfeited. Acquire-get!
In case you redo the AC chargers Sooner or later, could the thing is if you can do a conducted emissions check around the AC aspect?
The cheap chargers all make use of a "ringing choke converter" circuit, which coincidentally is similar energy supply topology used by the Apple II.
Thanks for your comprehensive and minucious analysis, with all sources and methodology. A very extraordinary do the job
Certainly, you can find tech-savvy individuals who like additional choices and from time to time even like complexity, but from yrs of practical experience for a current market researcher, I can show you that in the end, the majority of users are not tech-savvy, and maintaining factors basic for them is often a furthermore. Apple understands this in spades and isn't tempted to include several variations of an apple iphone, iPad as well as multiple or two forms of iPods.
Hey Ken - this was Tremendous insightful and I planned to thanks for it. A charger is just some normal, on a daily basis bit of know-how that folks spend tiny to no notice to in any way but as you've found out, they're not produced equivalent and change wildly when it comes to functionality.
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Keep to the yellow curve clockwise with the higher remaining on the lower still left to begin to see the impact of raising load.
I am not defending the junky Chinese chargers Which may zap you, melt away the house down, or just Do not do the job, but allows not get carried absent and pretend like we're undertaking higher precision experiments within a exploration lab.
Can it be dangerous to use a high output ability charger, much like the HP TouchPad just one, with a reduced intake product, like a phone?
Are you able to do this comparison for authentic authentic notebook AC adapters and an inexpensive aftermarket one? I'm curious as to the distinctions amongst a $eighty primary from Sony in addition to a $fifteen third-get together 1.
claimed... Hello, many thanks a lot for this generate up. I used to be exploring the most secure way I could easily electricity up my Commodore sixty four, which normally takes 9VAC and 5VDC. After I learnt that cheapo 5V supplies can be quite dire without a doubt I went over a quest to locate the greatest ready to go solution.