| 摘要 |
<p>PROBLEM TO BE SOLVED: To strike a balance between simplification of an arrangement pattern of a conductor and miniaturization of the connector. SOLUTION: A second circuit board 4 is attached to a first circuit board 1, which has the conductor 1d for signals, while preparing the conductor 4b for load current in the second circuit board 4, a switch 5, which opens and closes between the conductor 4b for load current, is mounted, and further, the conductor 4b for load current is directly connected to a connection terminal 2c for load current of the connector 2. By this, the conductor arrangement pattern of the first circuit board 1 can be made simple in the extent of the part of conductor 4b for load current prepared in the second circuit board 4. Since the switch 5 is mounted in the second circuit board 4, in another words, since the switch 5 is not directly attached to the connector 2, the miniaturization of the connector 2 can be attained.</p> |
