| 摘要 |
PROBLEM TO BE SOLVED: To generate a driving pulse for transmitting a ternary electric charge transferring path including negative voltage without any negative power source. SOLUTION: This circuit A for impressing the ternary voltage signal of a first voltage signal VH, a second voltage signal VM and a third voltage signal VL, which are lowered in order, to a capacitive load Cvn has a switch 51 for outputting a positive VH from a first output terminal Vdc in the first period in which the first signal (-ϕfs) is at the first voltage level, a clock means for outputting a clock signal from the second output terminal Vac by being for synchronized with the second clock signal (-ϕvn) in the second period in which the -ϕfs is at the second voltage level, a clip means 55 for controlling voltage outputted from Vdc from exceeding VM lower than VH, and a coupling capacity Ccp between Vdc and Vac.
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