| 摘要 |
PURPOSE:To obtain a phase meter of simple constitution by determining a phase difference by utilizing the difference between two sine-wave voltages. CONSTITUTION:A switch 8 is placed at a contact 8b side and variable voltage dividers 3a and 3b, forming voltage dividing circuits 4a and 4b together with input attenuators 2a and 2b, are adjusted. Then, the circuits 4a and 4b generate voltages in phase with and equal in level to voltages to be tested which are supplied from AC sine-wave voltage circuits 1a and 1b. In this state, the switch 8 is changed over to a contact 8a, the difference between the output voltages of the circuits 4a and 4b is indicated on a voltmeter in proportion to the phase difference, and then read directly on a phase meter 7 of simple constitution having gradations of phase difference angles. Further, the sensitivity is adjusted with a switch 6a. |
