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Measurements & Electrical Analog Devices

Measurements & Electrical Analog Devices. Introduction . Analog Devices: Current Measurements Analog Devices: Voltage Measurements Analog Devices: Resistance Measurements. Direct Current Measurement.

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Measurements & Electrical Analog Devices

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  1. Measurements & Electrical Analog Devices

  2. Introduction • Analog Devices: Current Measurements • Analog Devices: Voltage Measurements • Analog Devices: Resistance Measurements

  3. Direct Current Measurement • Simplest way – responds to the force exerted on a current-carrying conductor in magnetic field

  4. Direct Current Measurement • Application: D’ Arsonval movement inside an ammeter

  5. Alternating Current Measurement • First technique – uses diode – converts ac current into dc current • Other technique – employ electromagnets (Magnetic field increases with increasing current flow) • For large ac current – Hall effect

  6. Voltage Measurements • Analog Voltage Meters

  7. Voltage Measurements • Oscilloscope

  8. Voltage Measurements • Potentiometer

  9. Resistance Measurements • Ohmmeter

  10. Resistance Measurements • Bridge Circuits

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