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MAXWELL BRIDGE CIRCUIT
Maxwell’s bridge measures an unknown inductances in terms of a known capacitor. The Maxwell bridge circuit diagram is as shown in figure. Maxwell b…
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Wheatstone's Bridge
Wheatstone's Bridge(Measurement Of Resistance)
A bridge in its simplest form consists of a network of 4 resistance arms forming a loop , with a dc source of current applied to 2 opposite junctio…
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DIFFERENTIAL VOLTMETER
The diagram of differential dc voltmeter is shown figure. The unknown dc voltage is applied to the input of the amplifier section and a neighborhood …
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DIFFERENTIAL VOLTMETER
The differential voltmeter technique is one among the foremost common and accurate method of measuring unknown voltage. During this technique, the …
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BASIC DC VOLTMETER WITH FET INPUT
The circuit of a dc voltmeter with FET input is shown in figure. This meter decreases the quantity of power drawn from a circuit under test by increa…
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RECTIFER TYPE VOLTMETER
Rectifier type instruments generally use a PMMC movement along side a rectifier arrangement. Silicon diodes are preferred due to their low reverse …
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SHUNT TYPE OMMETER
The circuit diagram of a shunt type ohmmeter is shown in figure 1 Shunt type ohmmeter Construction: It consists of a batter…
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SERIES TYPE OHMMETER
CONSTRUCTON: The series type ohmmeter essentially consists of a D’Arsonval movement connected with a resistance R 1 and A battery to a pair of t…
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EXTENDING THE RANGE OF DC VOLTMETER; VOLTMETER SENSITIVITY; LOADING EFFECT
EXTENDING THE RANGE OF DC VOLTMETER ; VOLTMETER SENSITIVITY; LOADING EFFECT
As within the case of an ammeter, to get a multi range ammeter, variety of shunts are connected across the movement with a multi position switch. S…
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DC VOLT METER
The basic moving system, often called the D’ Arsonal movement, is named a basic meter. The basic meter movement becomes a dc instrument, measuring. …
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ARYTON SHUNT (OR) UNIVERSAL SHUNT
ARYTON SHUNT (OR) UNIVERSAL SHUNT
The Aryton shunt eliminates the possibility the likelihood of getting the meter within the circuit while not a shunt. This advantage is gained at the…
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MULTI RANGE (OR) EXTENDING THE RANGE OF DC AMMETER
The current range of the dc ammeter may be further extended by a number of shunts, selected by a range switch. Such meter is called a multi range a…
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DC AMMETER
DC AMMETER
The basic movement of a dc ammeter may be a PMMC galvanometer. Since the coil winding of a basic movement is tiny and lightweight. It will carry so…
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ADVANTAGES OF DIGITAL INSTRUMENTS OVER ANALOG INSTRUMENTS
ADVANTAGES OF DIGITAL INSTRUMENTS OVER ANALOG INSTRUMENTS
1 It displays ac and dc values as separate numbers, instead of as a pointer on a continuous scale as in AN analog instrument. 2. It reduces…
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DIGITAL MULTIMETERS; SPECIFICATIONS OF DIGITAL MULTIMETER:
CURRENT TO VOLTAGE CONVERTER
DIGITAL MULTIMETERS
INTRODUCTION: Digital instruments convert analog signals into a digital or numeric readout. This digital readout can be displayed on…
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