Electrical measurements is the set of the methods, devices and calculations aimed to measure electrical quantities.
Measurable independent and semi-independent electrical quantities comprise:
- Voltage by the means of voltmeter (or using oscilloscope, including pulse forms)
- Electric current by the means of ammeter
- Electrical resistance and electrical conductance by the means of ohmmeter
- Electrical reactance and susceptance by the means of ohmmeter
- Magnetic flux
- Electrical charge by the means of electrometer
- Magnetic field by the means of Hall sensor
- Electric field
- Electrical power by the means of electricity meter
- S-matrix by the means of network analyzer (electrical)
- Electrical power spectrum by the means of spectrum analyzer
Measurable dependent electrical quantities comprise:
- Inductance defined as frequency proportionality coefficient for reactance
- Capacitance defined as reciprocal frequency proportional coefficient for reactance
- Electrical impedance defined as vector sum of electrical resistance and electrical reactance
- Phase between current and voltage and related quality factor
- Electrical spectral density
- Electrical phase noise
- Electrical amplitude noise
- Transconductance
- Transimpedance
- Electrical power gain
- Voltage gain
- Current gain
- Frequency
References
Lectures on electrical measurements List of measurable electrical units Electrical measurement safety manual Early electrical measurement equipment]
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