| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve the problem that all electric circuits are turned off and an electric power source of on-vehicle electronic equipment is also turned off when a main switch is turned off, and that a voltage drops and an operation is not stable during a startup by rotating a starter motor, and consuming the large amount of electric power. SOLUTION: This invention is provided with a main battery MB, a sub battery SB, a sub electric power source circuit, a push switch SW", a relay contact SW3, a connection main body 4, and a relay RL1 connecting a base of a transistor TR2 and a collector of a transistor TR1 and operating the relay contact SW3 connected to a collector of the transistor TR2 is parallel with a diode D1.</p> |
