| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate a driving battery by acquiring a small direct current from a relatively large alternating current. <P>SOLUTION: This power-supply unit 14 is attached to a motor or the like, and provided for a communication terminal transmitting measurement data or the like, and is characterized by providing a power-supply unit 14 including: a current transformer 11 obtaining an alternating current from a power line 31 connected to the communication terminal 1 operating at an alternating current, and lowering the current value of the obtained alternating current; and a commuting device 12 obtaining the alternating current from the current transformer 11 to convert the obtained alternating current to a direct current, and carrying the direct current to a body device 13 of the communication terminal 1. <P>COPYRIGHT: (C)2009,JPO&INPIT |
