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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. Analyze the 2-bit R-2R ladder-network D/A converter, and corresponding to binary 01, 10, and 11, obtain the equivalent circuits and determine the analog output voltage as a frac
Which clipper would you prefer between the series and the shunt clipper? Why?
how electromagnetic wave transmitted from the ground are bent back towards the earth when they enter a layer of ionosphere?
Maximum power transfer theorem
Question: (a) Show the Bode Plot, showing the relevant corner frequencies and slopes, for the unity feedback system whose open loop transfer function is given by: (b) T
You are expected to do the experimentation on digital electronics and realize the result...
Gate terminal - field-effect transistor: The names of the terminals consider to their functions. The gate terminal might be thought of since controlling the opening and closin
A signal comprises a bandwidth of 1kHz centred around 1kHz. A sine wave along with a frequency of 1250Hz is added to the signal. The bandwidth of the new signal is: 2250Hz
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Q. Draw the complete circuit of a dual voltage source using 7805 and 7905. A voltage regulator is a circuit that supplies a constant voltage regardless of changes in load curre
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