Search results
Results from the WOW.Com Content Network
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
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 ...
IEC 60688 Electrical measuring transducers for converting A.C. and D.C. electrical quantities to analogue or digital signals; IEC 60689 Measurement and test methods for tuning fork quartz crystal units in the range from 10 kHz to 200 kHz and standard values; IEC 60691 Thermal-links – Requirements and application guide
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
Displays waveform of a signal, allows measurement of frequency, timing, peak excursion, offset, ... Psophometer: Measures AF signal level and noise Q meter: Measures Q factor of the RF circuits Tachometer: Measures speed of motors Signal analyzer: Measures both the amplitude and the modulation of a RF signal Signal generator
In electrical engineering, characteristics like current or voltage can be measured by an ammeter, a voltmeter, a multimeter, etc. The ammeter is used in series with the load, so the same current flows through the load and the ammeter.
Original file (1,175 × 1,656 pixels, file size: 130.73 MB, MIME type: application/pdf, 780 pages) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
A conventional electrical unit (or conventional unit where there is no risk of ambiguity) is a unit of measurement in the field of electricity which is based on the so-called "conventional values" of the Josephson constant, the von Klitzing constant agreed by the International Committee for Weights and Measures (CIPM) in 1988, as well as Δν Cs used to define the second.