Electrical Measurements |
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Page 695
... detector branch e = E p KZ12 ( 1 + K ) 2Z ̧2 K E P • ( 1 + K ) 2 The maximum value of e is found by differentiating with respect to K and equating the result to zero : de E P dK ( 1 + K ) 2 - 2K ( 1 + K ) ( 1 + K ) 1 0 , or 1 + K = 2K ...
... detector branch e = E p KZ12 ( 1 + K ) 2Z ̧2 K E P • ( 1 + K ) 2 The maximum value of e is found by differentiating with respect to K and equating the result to zero : de E P dK ( 1 + K ) 2 - 2K ( 1 + K ) ( 1 + K ) 1 0 , or 1 + K = 2K ...
Page 743
... detector . However , the response of an overly sensitive detector can be reduced by shunting or by other devices to improve operation . It is equally unsatisfactory to attempt to use a detector whose sensitivity is insufficient for the ...
... detector . However , the response of an overly sensitive detector can be reduced by shunting or by other devices to improve operation . It is equally unsatisfactory to attempt to use a detector whose sensitivity is insufficient for the ...
Page 744
... detector manipulation should not be unduly fatiguing to the operator . ( 3 ) Frequency selectivity in the detector is essential to balance in bridges that are frequency - sensitive , if the wave form of the supply voltage is impure . In ...
... detector manipulation should not be unduly fatiguing to the operator . ( 3 ) Frequency selectivity in the detector is essential to balance in bridges that are frequency - sensitive , if the wave form of the supply voltage is impure . In ...
Contents
The Art of Measurement | 1 |
Electrical Units | 15 |
DirectCurrent Galvanometers | 44 |
Copyright | |
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accuracy adjustment air gap alternating current ammeter arrangement balance ballistic bridge C₁ 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