| 摘要 |
PURPOSE:To realize the coefficient setting covering both the plus and minus polarities of the coefficient unit via the coefficient unit featuring the single polarity by means of the coefficient unit featuring a specified coefficient. CONSTITUTION:The coefficient unit, which features either one polarity of 0<K3<1 or -1<K3<0 and also sets coefficient K3 featuring the relation of K1=2K3-1, is provided to the 4-quadrant multiplication-type D-A converter, i.e., the digital potentiometer which is used in the hybrid computer. Thus K1 is set within the renge of -1<K1. As shown in the figure, the coefficient unit of K1=2K3-1 is constituted with coefficient unit 1B in which coefficient K3 is set by the digital signal, reverse amplifier 5B of 1/2 gain and addition reverse amplifier 2B of gain 2 each. |
