| 摘要 |
PURPOSE:To simplify the gain setting and adjustment and to facilitate bias setting of an output polygonal point voltage by deciding a gain between polygonal points with a resistor and adding a bias setting circuit. CONSTITUTION:A gain between optional polygonal points is decided by an optional gain adjusting resistor (R1-R4) with the provision of signal limiter circuits 31-33, an adder amplifier circuit 38 and subtraction circuits 39-41. Thus, the gain setting/adjustment is simplified. Further, a bias setting circuit 80 is added and its output is fed to the adder amplifier circuit 38. Thus, a bias voltage is added to each polygonal point voltage and the setting of the output polygonal point voltage is facilitated.
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