Patent ID: 7781943

Claim:
An energy harvesting circuit, comprising an energy harvesting device, a solid state voltage dependent switch, and an inductor, wherein said solid state voltage dependent switch is connected between said energy harvesting device and said inductor, wherein said energy harvesting device converts mechanical energy into electrical energy, wherein said solid state voltage dependent switch has a first threshold and a second threshold, wherein said second threshold is below said first threshold, wherein said solid state voltage dependent switch remains open until voltage applied across said solid state voltage dependent switch from said energy harvesting device to said inductor reaches said first threshold, wherein when said voltage applied across said solid state voltage dependent switch reaches said first threshold said solid state voltage dependent switch closes so charge from said energy harvesting device flows through said solid state voltage dependent switch and through said inductor, wherein when said voltage applied across said solid state voltage dependent switch then falls below said second threshold said solid state voltage dependent switch reopens.