| 摘要 |
PURPOSE: To accurately duplicate an analog signal by transmitting an input analog signal to a precise rectifier through a current transformer which functions as an electric isolator. CONSTITUTION: A rectangular wave pulse is supplied from a rectangular wave generator 14 to a modulator 16. An analog input signal is modulated by a modulator 16 with the rectangular wave through a voltage-current converter 10 to which a preemphasis filter 12 is connected and supplied to the current transformer 18 which functions as an isolator. Then the signal is passed through the precise rectifier 20 and has high-frequency noise reduced by a deemphasis filter 22, so that the resulting signal is outputted. Consequently, a device which has its input and output terminals easily separated electrically and can propagate a low-noise, high-precision, and wide-bandwidth signal is easily obtained. |
