| 摘要 |
PURPOSE:To adjust the power supplied to a load, by providing variable setting equipments, which set adjustably boundaries of the output level of a power adjusting device, and variable setting equipments which set optionally output levels between respective boundaries. CONSTITUTION:A level setting equipment 15 which controls the output level of a power adjusting device 13 is provided with variable setting equipments 16a-16d, which are connected in series and set adjustably boundaries of the upper limit, the middle, and the lower limit of the output level, and variable setting equipments 18a-18c which set optionally output levels between respective boundaries. Variable setting equipments 16a-16d are provided with output terminals 17a-17d which slide to output continuous output levels; and in respect to variable setting equipments 18a-18c, switching contacts B1-Bn of a changeover switch A are led out from respective plural positions, and output levels are taken out adjustably by the slide contact of a changeover switching element C of the changeover switch A. |
