Re: efficient low-voltage ac/dc conversion for bicycle battery charger


"Adrian Tuddenham" <poppy.uk@xxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:1gxww2f.1len8addghteqN%poppy.uk@xxxxxxxxxxxxxxxxxxxxxxxxxxx

> 1) Winding a 2W autotransformer (designed to work down to 10 c/s) which
> steps the voltge up to allow efficient full-wave rectification, followed
> by some sort of switched-mode step-down system?

Could one use a circuit that used a comparator to switch alternate halves of
a MOSFET bridge (like a diode bridge, only with FETs instead)?

Just an idea to avoid the voltage drops.



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