| 1. | Indicate the testing current and setting value of warning
显示测试电流及警告设限值 |
| 2. | Do not use ammeter in circuits with more than 32v present
不得在电压不要超过32v的电路上测试电流。 |
| 3. | Ac 32 amperes high test current
测试电流最大ac 32a |
| 4. | Measurement of resistance for a current - carrying resistor at one test current
按一测试电流，测量载流电阻器的阻力。 |
| 5. | Ti ? the maximum voltage developed across an input diode with test current applied
测试电流加到输入二极管所产生的最大压降。 |
| 6. | Measurement of resistance for the same current - carrying resistor at each additional test current
按每一额外测试电流，测量同一载流电阻器的阻力。 |
| 7. | The micro - controller is used to control the high - voltage signal source and the measuring current
该方法使用微控制器控制高压信号源，并同时精确控制测试电流。 |
| 8. | The ac ammeter will normally be calibrated at 5 test currents for one range to establish the scale linearity
交流电流表一般以一个量程的五个测试电流值进行校正，以定立标度线性。 |
| 9. | The bias magnetic field of the bias coil driven by bias current and small signal test current , results in the induced signal of the control coil . the terminal voltage of the control coil is detected by the test circuit . then the signal containing the information of rotor displacement is obtained , from which we can get the dc voltage signal proportional to the rotor displacement through half - wave rectification circuit and low pass circuit . this dc signal is put into a pid controller to get the control signal of the rotor displacement
偏置测试电路向偏置线圈输入偏置电流和小信号测试电流,两者产生的偏置磁场在控制线圈产生感应信号,检测电路检测控制线圈端电压并提取含有转子位移信息的电压信号,该信号经半波整流电路和低通滤波电路后得到与转子位移成正比例的直流信号,再由pid控制器转换为转子位移的控制信号,最后控制信号输入功放电路产生控制电流,实现闭环控制。 |
| 10. | But how to measure grounding resistance of large grounding grid simply and exactly is a difficult problem to electric power staff all the time . this paper has classified measuring methods of grounding resistance at home and abroad , and has analyzed interference factors during measurement , and has summarized principle and characteristic and measuring current and so on of various measuring methods
本文对国内外现有或正在研究的测量方法进行了分类，分析了测量地网接地电阻干扰的主要来源，并首次全面地对各种方法的原理、特点、测试电流、消除干扰能力和测试结果进行了比较分析、总结归纳，方便后来者研究应用。 |
