| 摘要 |
PURPOSE:To prevent a user from feeling apprehensions about the existence of trouble, by combining a voltage regulator with an indication meter to accelerate the moving speed of an indicator. CONSTITUTION:The nodes A1-A3 of the meters 2-4 and variable resistors 5-7 in a measuring indication circuit 11 and the nodes B1-B3 of the hydraulic switch 14 and hydraulic alarm lamp 15 in a hydraulic alarm circuit 16 are connected through bypass circuits 18a-18c. Unidirectional diodes 19a-19c are inserted in said circuits 18a-18c so as to prevent a current from flowing from the side of the circuit 16 to the side of the circuit 11. When an ignition switch 17 is turned ON, a switch 14 is turned ON because hydraulic pressure is zero and the lamp 15 lights and a current adjusted by a voltage regulator 1 flows to an earth 13 through meters 2-4-circuits 18a-18c-switch 14. Because of this, resistors 5-7 are shortcircuited and a large current flows to the meters 2-4 and the indicators of said meters begin to rapidly move. Therefore, a user has no room for feeling a doubt about the existence of trouble.
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