| 摘要 |
PURPOSE:To effectively utilize a battery by a method wherein the device is prevented from being miswired in the time of execution and surplus power is set to a small level, by supplying power to a number of loads from the single battery. CONSTITUTION:An output of a battery BT is converted boosting or reducing its voltage in a voltage converter circuit INV through a main switching element SW1, being fed to loads Z1, Z2 in accordance with on-off operation of load select switching elements SW2, SW3. An action signal SIG3 is inverted in an inverter NT11, and an AND, obtained by its output and by this output passing through a timer TM3, is generated in an AND gate AN11, driving the load select switching element SW2. After the action signal SIG3 is turned on, power is fed to the load Z1 till the timer TM3 counts up the time. Similarly after an action signal STG4 is turned on, the power is fed to the load Z2 till a timer TM4 counts up the time. The main switching element SW1 is turned on through an OR circuit OR11 when either the AND gate AN11 or AN12 is turned on. |
