| 摘要 |
<p>PROBLEM TO BE SOLVED: To hold load current in a small level while continuously supplying current to a load which is important for start by simple means by current- carrying controlling a relay not having only one actuating contact point so as to control connection and disconnection of the load which is important for each battery and start. SOLUTION: During a normal operation, a relay R1 is current-carried, its switch r1 is closed, a load 15 which is important for start is connected to a power feed battery 12, and power is supplied from the battery 12. In this case, power of a battery 14 is supplied from a power generator 13 by control of transistors T1, T2. When power is discharged to such a degree that the battery 12 can not be operated or more, current-carrying of the relay R1 is stopped, its switch r1 is opened, and thereby, a load 15 which is important for start is shut out from the battery 12, and is connected to the battery 14 by control of the transistors T1, T2. As a result, power of the load 15 which is important for start is fed from the battery 14.</p> |
