| 摘要 |
PURPOSE:To obtain a simplified polygonal line circuit and a polygonal line with desired characteristics by connecting in series a diode and a resistance between an input terminal and an inversional input terminal of an operational amplifier and by connecting a constant voltage terminal at a connection point between said diode and said resistance. CONSTITUTION:A resistance R0 and a series circuit connecting in series resistances R1-R3 and diodes D1-D3 are connected between an input terminal 1 of a polygonal circuit and an operational amplifier 3, and constant voltage terminals 4 are connected via resistances r1-r3 respectively at connection points between respective resistances R1-R3 and diodes D1-D3. Further, a feedback resistance Rf is connected to the amplifier 3, in addition, a standard resistance Rs is counted. Still more, an inclination K0 necessary for 0-V1 of an input voltage Vi from the terminal 1 is determined by the resistances R0 and Rf, and inclinations K1-K2... necessary for V1-V2, V3-V4... are determined respectively by the diodes D1-D2..., the resistances R1-R2... and the resistance Rf. An output voltage V0 from the amplifier 3 is outputted via a code inversion amplifier 3' to an output terminal 2, and with simpler circuit constitution a desired polygonal line is outputted. |
