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Chapter Two Voltage and Current Measurement CONTINUE

Chapter Two Voltage and Current Measurement CONTINUE. بسم الله الرحمن الرحيم. 2.4. Current Measurement. Current measuring devices are selected for: Precision Stability Frequency response, including dc Galvanic isolation التأكد من العزل التام بعدم مرور تيار Presentation of the data

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Chapter Two Voltage and Current Measurement CONTINUE

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  1. Chapter TwoVoltage and Current MeasurementCONTINUE بسم الله الرحمن الرحيم A. Prof. Magdi El-Saadawi

  2. 2.4. Current Measurement Current measuring devices are selected for: • Precision • Stability • Frequency response, including dc • Galvanic isolation التأكد من العزل التام بعدم مرور تيار • Presentation of the data • Effect on measured circuit A. Prof. Magdi El-Saadawi

  3. Using an Ammeter as a Voltmeter and vice versa A. Prof. Magdi El-Saadawi

  4. Using a Voltmeter as an Ammeter By using a shunt resistance to reduce the large internal resistance of the voltmeter, so that it can be connected in series in the circuit A. Prof. Magdi El-Saadawi

  5. Using an Ammeter as a Voltmeter By using a series resistance to enlarge the small internal resistance of the ammeter , so that it can be connected in parallel in the circuit A. Prof. Magdi El-Saadawi

  6. Figure 2.34 Changing the range of a Voltmeter using a number of high resistance resistors connected in series with meter coil and known as multiplier A. Prof. Magdi El-Saadawi

  7. Figure 2.35 Changing the range of a Ammeter using a number of low resistance resistors connected in parallel with meter operating coil and known as multiplier A. Prof. Magdi El-Saadawi

  8. A. Prof. Magdi El-Saadawi

  9. Solution A. Prof. Magdi El-Saadawi

  10. Solution guide A. Prof. Magdi El-Saadawi

  11. 2.4.2. The Moving Magnet Meter A. Prof. Magdi El-Saadawi

  12. 2.4.3. The D’Arsonval Meter A. Prof. Magdi El-Saadawi

  13. 2.4.4. The Electrodynamometer A. Prof. Magdi El-Saadawi

  14. 2.4.5. The RF Ammeter and True rms A. Prof. Magdi El-Saadawi

  15. 2.4.6. The Current Transformer A. Prof. Magdi El-Saadawi

  16. A. Prof. Magdi El-Saadawi

  17. Current and potential transformers for High voltage measurements A. Prof. Magdi El-Saadawi

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