Circuit Design (IMAGE)

Tokyo Institute of Technology

Circuit Design

Caption

Each sensor node consists of a circuit made of just a photovoltaic source, a variable resistor, a capacitor, two inductors and a bipolar transistor (top). One inductor is realized as a printed layer onto the circuit board and used for coupling (bottom, left). The overall design is quite compact, with the majority of the 32 × 32 mm board area taken up by the solar cells.

Credit

Minati L

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