| 摘要 |
PROBLEM TO BE SOLVED: To shorten a time for a current flowing through a load to be changed from ON to OFF and also to save power consumption when the current is OFF in the load. SOLUTION: A current driving circuit is the one where the load is connected to the output of a mirror circuit in the output stage of a constant current circuit and is provided with a switching element 5 for turning on/off the input of the current to the mirror circuit of the output stage and a switching element 12 for turning on/off the input of the current to the load 4 from the output stage mirror circuit. When both the switching elements 5 and 12 are in an OFF state, the current is made to flow through the load 4. When the element 5 is in the OFF state and the element 12 is in the On state, an electric charge stored in the load 4 is discharged. |
