| 摘要 |
PURPOSE:To widen a measurable range and to execute an accurate measurement by delaying a pulse by a value corresponding to the value of electrostatic capacity and discriminating the pulse in phase. CONSTITUTION:When an objective of measurement approaches, for example, a converter 22 to increase the electrostatic capacity of the converter 22, a pulse from a delay circuit 14 lags in phase. Consequently, this pulse is reversed in phase to a pulse from a delay circuit 13 and a discriminating circuit 18 discriminates the phase, so that its discriminated output appears at an output terminal 17. On the other hand, when the objective of measurement approaches the converter 21 to increase the electrostatic capacity of a converter 21, a pulse from a delay circuit 16 lags in phase and a discriminating circuit 20 discriminates the phase, so that an output appears at an output terminal 19. |
