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Okies, if its a 0.2V drop across a bridge then that would be doable.
I do assume you mean across the bridge rather than across a single Schottky diode.
Even a Germanium Schottky bridge would drop 0.6V across it, which would drop (I think) about 10% of the power.
Given that the USB specification requires a supply of 5V at 500mA (ie 2.5W) a Schottky bridge would give very little efficiency to work with on the sepic/Cuk to work within.
Hi all,
So, I've been looking far and wide on the tinterweb and have yet to find a good solution to this problem. Here it is.
I have a Hub Dynamo on my bicycle that I want to hook up to a USB power connector (to power my phone). I want to have high efficiency as my phone has a pretty high...
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