Precision Frequency Standard

Precision Frequency Standard: Most high precision frequency standard in use utilise a geometric transverse (GT) cut quartz crystal as the frequency controlling resonant elements having changes in frequency of less…

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Pulse Code Modulation

Pulse Code Modulation(PCM): Pulse Code Modulation(PCM) is different from the other forms of pulse modulation studied so far, PCM also uses sampling techniques, but it differs from the others in…

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Ideal Active Op Amp Differentiator circuit

Ideal Active Op Amp Differentiator circuit: The circuit which produces the differentiation of the input voltage at its output is called Differentiator. The differentiator circuit which does not use any…

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Op Amp Integrator Circuit

Op Amp Integrator Circuit: In an Op Amp Integrator Circuit, the output voltage is the integration of the input voltage. The integrators circuit can be obtained without using active devices…

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Armature Reaction in DC Machine

Armature Reaction in DC Machine: When the armature of a dc machine carries current, the distributed armature winding produces its own mmf (distributed) known as armature reaction in DC Machine.…

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Torque Equation of Synchronous Motor

Torque Equation of Synchronous Motor: Figure 5.36 shows a Torque Equation of Synchronous Motor with a round rotor. The rotor is initially stationary with fixed north-south poles created by dc…

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