| 摘要 |
<p>An energy conversion element gathers energy from the surrounding environment, generates electrical energy, and outputs same as an electrical signal. An amplifier operates on power supplied by an electricity-storage device. The electrical signal outputted by the energy conversion element is inputted to the electricity-storage device and the amplifier via a current pathway. This results in a sensor in which, even if the state of charge of an electricity-storage device drops, said electricity-storage device does not need to be replaced.</p> |
