Electrostatic voltmeters are now almost entirely used for the measurement of high voltages from 2000 to 50,000 volts employed in electrotechnics.
Ayrton and others, for measuring voltages from 10,000 volts down to 1 volt.
It is thus futile to compare the absolute voltages met with at two stations, unless allowance can be made for the influence of the environment.
A, B, C, D, E, F, Terminals to which standard cell or voltages to be tested are attached.
Another muchused method of measuring con tinuous current voltages or unidirectional potential difference employs the principle of potentiometer.
At Such Times Gradients Of 400 Or 500 Volts Per Metre Are By No Means Unusual At Kew, And Voltages Of 700 Or Boo Are Occasionally Met With.
Like the corresponding ammeters, they have the great advantage that the scales are equidivisional and that there is no dead part in the scale, whereas both the electrostatic and electrothermal voltmeters, above described, labour under the disadvantage that the scale divisions are not equal but increase with rise of voltages, hence there is generally a portion of the scale near the zero point where the divisions are so close as to be useless for reading purposes and are therefore omitted.
explosive atmospheres, which can be induced by very low voltages.
These instruments are only adapted for the measurement of continuous potential difference, that is to say, unidirectional potential difference, but not for alternating voltages.
ballast inductor at different supply voltages.
During construction of such a voltage divider always ensure all parts have adequate clearances for the voltages being measured.
So do other biological processes, such as the voltages in hearts detected using electrocardiographs.
The good news is that in many cases these voltages can be measured through mutual inductance.
The graph below shows the AC current passed by the ballast inductor at different supply voltages.
Lower voltages may be necessary when working in close contact with earthed metalwork.
It does not require costly short-circuit protection for a short circuit between supply voltages.
Modules are available for a variety of input types including thermocouples, RTDs, DC and AC current and voltages.
By making the reference bias voltages applied to the diodes equal, an approximate square wave output is obtained from a sine wave input.
The secondary windings of the transformer step the AC voltage up or down to provide the proper voltages.
windings of the transformer step the AC voltage up or down to provide the proper voltages.
With a view to this, it has become increasingly common of late years to publish not the voltages actually observed, but values deduced from them for the potential gradient in the open in volts per metre.
For the measurement of voltages in continuous current generating stations, movable coil voltmeters are much employed, generally constructed then in the "edgewise" pattern (fig.
All voltages are recalculated according to their tables for this new energy.
Equipped with a voltage processor to provide control voltages for all synthesizer modules.
It monitors all the voltages associated with the Roadster's operation.
While many manufacturers' heaters come in a wide variety of voltages, the amperage and circuit breaker requirements are often more difficult to determine.
No need for multiple junction boxes, All your track lighting for the average-sized kitchen can run from one junction box because they are require low voltages.
Surface electrodes attached to the scalp measure voltages in the brain.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.