| 摘要 |
PROBLEM TO BE SOLVED: To provide a display unit for setting voltage and current of a power unit, which can set an output voltage value or output current value and a limited current value or limited voltage value prior to operation. SOLUTION: This display unit is constituted of an output value setter 2, consisting of a variable resistor, a change detection element 5 detecting a change of a preset value of this output value setter 2, a time limit element 8, a display unit 7, and a display switching element 6. When the change of the preset value of the output value setter 2 is detected by the change detection element 5 at output stopped time of a power unit, the display switching element 6 feeds the preset value of the output value setter 2 to the display unit 7 to make it display the preset value, so as to continue the display of the preset value only for a fixed time, determined by the time limit element 8, after there is no change in the preset value.
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