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Registered Member #3637
Joined: Fri Jan 21 2011, 11:07PM
Location: Buffalo, NY
Posts: 1068
Hey all, so... I had this wireless power thing sitting around in a box under my bed for a bit, and decided to attempt something with it;
A ZVS wireless power transmitter, current limited!
A ZVS driver is a current fed oscillator; meaning that it acts very similar to how laser diodes act. It'll take as much current as it can from a source.
Thinking this through, I decided to use one of my own proprietary driver designs. A buck boost laser diode driver, capable of accepting either one OR two li-ion cells.
Pics!
You can see the driver board on there :3
LED light!
The driver is set to 430 mA. It's boosting to 5 volts, from a single li-ion cell. It draws about 730 mA total from the cell.
In total the driver is drawing about 2.15 watts total from the battery. :)
I bet I could get it even smaller if I used SMT components...
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Mini-wireless power demonstrator
