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Q. Explain Inductorless Filters
Inductorless (Active) Filters
Filters (used to pass or eliminate certain frequency components of a signal) that are suitable for IC fabrication, but which do not contain inductors, are known as active filters. They have the op amp as a common component. Figure 5.4.13 shows the basic op-amp circuit with frequency-dependent impedances. The voltage gain or voltage transfer function of this circuit is given by
with Zi = Ri and Zf = Rf (1/j ωCf ) (i.e., Rf and Cf in parallel). We have a low-pass filter with
is sketched in Figure 5.4.14, from which one can see that at the half-power or 3-dB point of fl, the dc value Rf /Ri goes down by a factor of 1/ √ 2 or 0.707. With Zf = Rf and Zi = Ri + 1/j ωCi (i.e., Ri and Ci in series), we have a high-pass filter for which we obtain
Discuss any one application of 8254 Programmable Interval Timer in detail. Mode1 causes the counter to treat as a retriggerable monostable multivibrator one shot. The G inpu
Q. For the networks shown in Figure, determine the transfer function G(s) = V o (s)/V i (s).
Q. Consider the electromagnetic plunger shown in Figure. The λ-i relationship for the normal working range is experimentally found to be λ = Ki 2/3 /(x+t), where K is a constant. D
weighted resistor and r2r ladder d/a converter
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Q. Show the Enhancement of MOSFET ? Here also the slab of p type material called the substrate is provided. The substrate is connected to a source terminal. Many discrete devic
Question: a) Describe two mechanisms by which electrons can be excited from the valence band to the conduction band? b) Given that the direct-band gap energy for Gallium N
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Q. What is an oscillator? Discuss the advantages of Oscillators ? An oscillator is a system consisting of active and passive circuit elements to produce a sinusoidal or other r
Circuits Typical electronics circuits are created out of a basis set of primitive elements such as capacitors, voltage sources, resistors, transistors and inductors. T
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