| 摘要 |
PURPOSE:To obtain a physical quantity converter which can vary continuously the variable impedance changing according to input physical quantity and has a long damping time constant characteristic by converting said impedance to a pulse signal having the on-off duty ratio associated therewith. CONSTITUTION:The pulse signal applied from a detection circuit II is smoothed in a smoothing circuit FL1 and is converted to a DC voltage by which current output I0 is controlled. The circuit FL1 constitutes the time constant circuit to determine the damping characteristic of the circuit and is provided with a switching means SW1 for changing the time constant driven by the frequency- divided on-off duty pulse from a circuit IV for generating the time constant control signal and a variable resistor VR1 for varying the time constant. The means SW1 is closed by the time when a pulse signal is applied and holds the signal voltage in order time. The circuit FL1 is operated by such operation in the same way as in the case in which the time constant increases. |
