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Q. Explain about Differentiator?
Shown in Figure is a differentiator which is obtained by replacing R1 in the inverting amplifier of Figure by a capacitor C. Assuming ideal op-amp characteristics, one has i = iC and vo = - Ri = - RiC. But since iC (t) = Cdvin (t) /dt ,we get
vo (t) = - RC dvin (t) / dt
which corresponds to a differentiator with a gain of -RC. In practice, however, differentiators are normally avoided because of high-frequency noise (which is accentuated due to a transfer function that increases with frequency) and stability problems (which make them oscillate).
draw the gain frequency response of an RC coupled circuit? discuss fall in gain at very low and very high frequencies?
A 3 phase 400 volt(line to line) wye connected synchronous motor has Xs= 1 ohm per phase and a negligible armature resistance. The field current is so adjusted that the internal(in
Q. In the magnetic circuit shown in Figure the center leg has the same cross-sectional area as each of the outer legs. The coil has 400 turns. The permeability of iron may be a
Microprocessor 1. Write an assembly language program to find the highest among two numbers. 2. Draw and illustrate the internal architecture of 8085 briefly. 3. What is t
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A data hold is to be constructed that reconstructs the sampled signal by the straight-line approximation shown in Figure. Note that this device is a polygonal data hold with a dela
Q . Explain the working of Positive Clamper? Positive Clamper: The circuit for a positive clamper is shown in the figure. During the negative half cycle of the input signal,
Q. Explain Crystal Oscillator The frequency of a crystal-controlled oscillator is held constant to a high degree of accuracy by the use of a quartz crystal. The frequency depen
Application of vector impedance meter
its defination and mathematical expression if any
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