Electrical measurements

Electrical measurements are the methods, devices and calculations used to measure electrical quantities. Measurement of electrical quantities may be done to measure electrical parameters of a system. Using transducers, physical properties such as temperature, pressure, flow, force, and many others can be converted into electrical signals, which can then be conveniently measured and recorded. High-precision laboratory measurements of electrical quantities are used in experiments to determine fundamental physical properties such as the charge of the electron or the speed of light, and in the definition of the units for electrical measurements, with precision in some cases on the order of a few parts per million. Less precise measurements are required every day in industrial practice. Electrical measurements are a branch of the science of metrology.

Measurable independent and semi-independent electrical quantities comprise:

• Voltage
• Electric current
• Electrical resistance and electrical conductance
• Magnetic flux
• Electric field

Measurable dependent electrical quantities comprise:

• Inductance
• Capacitance
• Phase between current and voltage and related quality factor
• Electrical power gain
• Voltage gain
• Current gain
• Frequency

Не нашли, что искали? Воспользуйтесь поиском: