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| General Electronics Chat This forum is for general chat about electronics, eg: Dont know what a part does? Dont know how to read a circuit? Want to get an opinion? |
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28th July 2007, 07:59 PM
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 how do ac-dc phone chargers work? i mean i don't get it did they use transformers because i won't see them fitting a trnsformer in to something so small is there a difrent way they make it can you explain maybe even show me an example in a scymatic ftr(for the record) this is not for a school project or something i just wanted to know... | |
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28th July 2007, 09:14 PM
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| They're usually switch mode power supplies so the transformers are smaller.
__________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har." | |
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28th July 2007, 09:24 PM
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| switch mode? | |
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28th July 2007, 09:28 PM
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| The transformer is small because they use a high frequency oscillator instead of the low frequency 50Hz or 60Hz from the mains. The charging circuit is inside the phone. You are talking about just a power supply.
__________________ Uncle $crooge | |
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