| 摘要 |
PURPOSE:To improve input characteristics by connecting the series circuit of the 1st resistance, 1st capacitor and 2nd resistance to an input terminal, and the 2nd capacitor to the no-input terminal side of the 1st resistance and the input terminal side of the 2nd resistance. CONSTITUTION:When a voltage varying by steps is applied between input terminals (a) and (b), the voltage across a capacitor 3 rises with a time constant determined by resistance values of resistances 1 and 2 and capacitors 3 and 4, but the rate of the rise is lowered because the 2nd capacitor 4 is connected. When an AC voltage is applied to the input terminals (a) and (b), the across voltage of the capacitor 3 has some removed part corresponding to its AC component through the operation of a low-pass filter composed of the resistances 1 and 2 and the capacitor 4 and the rate of the removal is increased because the capacitor 4 is connected. |
