| 摘要 |
<p>PURPOSE:To efficiently drive a load circuit without influencing other circuits even when battery voltage is lowered by the action of the load circuit in an equipment using a battery. CONSTITUTION:The power source line of the battery 1 is divided into two, a primary side and a secondary side, by a diode 11, and the high current consumption load circuit 3 is disposed on the primary side, then a capacitor 13 is disposed on the secondary side. Especially, a display-related circuit is disposed so that a display circuit may not be influenced when the battery voltage is lowered by driving the load circuit 3. A voltage detector 12 is disposed on the secondary side where voltage fluctuation is little so as to detect the voltage. Based on the detected result, the load circuit 3 is driven and controlled. As a result, the load circuit is efficiently driven.</p> |
