| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrical outlet that is manufactured at low cost with a simple configuration and opens a contact, in a safe and reliable way, without causing generation of arcs, and to provide a power plug and a switch. SOLUTION: In the electrical outlet 2 for DC power feed systems, a constant-voltage element 10 is provided between a positive-electrode-side outlet contact 9p, which is connected to the positive electrode of a DC power supply 1 and a negative-electrode-side outlet contact 9n connected to the negative electrode of the DC power supply 1. The constant-voltage element is interrupted, when a voltage not more than a setting voltage of the DC power supply 1 is applied between both outlet contacts 9p, 9n, and becomes electrically continuous, when a high voltage that exceeds a set voltage of the DC power supply 1 is applied. In the power plug 3, a rectifying diode 14 is reverse-connected between a positive-electrode-side plug contact 12p and a negative-electrode-side plug contact 12n. COPYRIGHT: (C)2011,JPO&INPIT |
