| 摘要 |
PURPOSE:To generate gradient signals differing in polarity simultaneously or selectively by obtaining the output signals from the output terminal of a differntial amplifier and the connection point between a current source and the 1st capacity by connecting a control circuit in parallel to two series-connected capacitors. CONSTITUTION:Capacitors 10a and 10b are connected in series to current source 11. In differential amplifier 16, the inverted input terminal is connected to the connection point between capacitors 10a and 10b, the other terminal of capacitor 10b is connected to the output terminal and the uninverted input terminal is further connected to a desired reference potential source. Here, control circuit 12 is connected in parallel to both capacitors 10a and 10b to obtain output signals from the output terminal of differential amplifier 16 and the connection point between current source 11 and capacitor 10a. The simple constitution can therefore generate gradient signals differing in polarity simultaneously or selectively. |
