| 摘要 |
PURPOSE:To simplify the structure of a demodulator by varying the integral constant of the integrating circuit of the demodulator in accordance with the quantization step. CONSTITUTION:When the amplitude inclination of an input analog signal has become steep, the light emission part 35 is turned on, by which the resistor 27a is short-circuited, the resistor 26 becomes low resistance, the integral constant K becomes large, and the quantization step interval is enlarged. Moreover, it is also possible to split the resistor 27 into plural parts and selectively contol them by the photocoupler. |
