| 摘要 |
PURPOSE:To facilitate easy installation and maintenance of wiring by installing the operating unit controlled by computor signals and used to operate electric equipment of automobiles having a pair of power supply connections as an integrated system. CONSTITUTION:Electric equipment, a headlight socket 1 for example, has a pair of electric wires 2, 3 used to receive power supply. One of the wires 2 is extended to the outside and another wire 3 is connected to the collector C of a transistor Q used as a switching device. The emitter E of the transistor Q is introduced to the outside by means of a wire 4 through a protective diode D, and the base B is also introduced to the outside by means of a wire 5 through a resistance R. By connecting the high voltage side of the power source to the wire 2, the low voltage side to the wire 4, and the signal line of the computor to the wire 5, respectively, the headlamp L can be put on and off in accordance with the high or low level of the computor signal. |
