Electrical Measurements |
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Page 147
... slide wire with a graduated scale was described by DuBois - Reymond in 1862. He called this instrument a compensator . His first " compensator " was a straight two - meter slide wire of brass . He also described an instrument of more ...
... slide wire with a graduated scale was described by DuBois - Reymond in 1862. He called this instrument a compensator . His first " compensator " was a straight two - meter slide wire of brass . He also described an instrument of more ...
Page 148
... slide wire would equal an exact decimal fraction of a volt . With a reference cell having an emf of 1.434 volts and a slide wire of 2000 divisions , the " standard - cell balance " was made with the slider set at 1434 divisions . Thus ...
... slide wire would equal an exact decimal fraction of a volt . With a reference cell having an emf of 1.434 volts and a slide wire of 2000 divisions , the " standard - cell balance " was made with the slider set at 1434 divisions . Thus ...
Page 267
... SLIDE - WIRE BRIDGE . A very simple and moderately accurate form of Wheatstone bridge can be made up by using a slide wire for the ratio arms . The slide wire may consist of a uniform wire stretched beside a linear scale ( e.g. a meter ...
... SLIDE - WIRE BRIDGE . A very simple and moderately accurate form of Wheatstone bridge can be made up by using a slide wire for the ratio arms . The slide wire may consist of a uniform wire stretched beside a linear scale ( e.g. a meter ...
Contents
The Art of Measurement | 1 |
Electrical Units | 15 |
DirectCurrent Galvanometers | 43 |
Copyright | |
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accuracy adjustment air gap alternating current ammeter arrangement balance ballistic bridge C₁ C₂ calibration capacitance capacitor cell compensation connected constant construction decreases deflection detector dial direct current disc effect electrical electrode element emf's equation error field frequency friction function galvanometer heater impedance increase indication inductor instrument insulation load magnetic circuit magnetizing force magnitude manganin maximum measuring circuit mechanical ment meter method moving coil moving system mutual inductance ohms operating oscillograph permeability phase angle plate pointer position potentiometer power factor precision primary quantity R₁ R₂ range ratio arms reading relative damping resistance resistor result scale secondary sensitivity shield shown in Fig shunt slide wire specimen standard switch temperature coefficient terminals test coil thermal thermocouple torque transformer tube units usually V₁ vector voltage circuit voltage drop voltmeter volts wattmeter Wheatstone bridge winding Z₁ zero