.:madworm:.'s photos with the keyword: toothbrush

Braun toothbrush inductive charger

Braun toothbrush inductive charger

.:madworm:.
29 May 2012 113
Same charger as seen on the latest EEVblog video #284 . Looking at the waveform you can see that I put my "pickup coil" on the charger the other way around.
Two coils

Two coils

.:madworm:.
21 May 2011 110
To save a full H-bridge, they just wound two coils onto the core. It is driven by 2 MOSFETs in a small chip (TPC8211).