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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
Q. In a hundred-line exchange 24 two-motion selectors are used. Draw schematic you suggest for this exchange and illustrate its working. How many simultaneous calls can be made du
(a) The key elements of a protocol are the syntax, semantics and timing. Give a brief explanation of each of these key elements. (b) A file contains 4 million bytes. Compare
Draw and discuss power failure detection circuit interrupt NMI. The non-maskable interrupt (NMI) is an edge-triggered input which requests can interrupt upon the positive-edge.
GIS Based Mapping of Electrical Network: You have learnt in which the Geographic Information System is a system of mapping of the complete electrical network. The question we
write a short notes of thermal compansation?
WHAT IS THE FUNCTION OF DELAY LINE IN CRO
emitter followers regulator
The Thevenin equivalent circuit at the terminals of R2 / S for a 60 hz, 6 pole induction motor is shown below. a) Find the value of the slip for maximum torque and the maximum t
A 1000-hp, 2300-V, wye-connected, three-phase, 60-Hz, 20-pole synchronous motor, for which cylindrical-rotor theory can be used and all losses can be neglected, has a synchronous r
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