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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. The voltage at terminal a relative to terminal b of an electric component is v(t) = 20 cos 120πt V. A current i(t) =-4 sin 120πt A ?ows into terminal a. From time t 1 to t 2 ,
Discuss the properties and uses of ALNICO. Alnico : It is an alloy of iron, nickel, cobalt and small amount of copper and aluminium. Properties are - 1. Its saturation f
Transparent latch D flip Flop A typical example of this type of D flop is 7475 shown in figure when CLK connected is enable signal is high and the flip flop is enabled
Q. Explain, with the help of structure, the working of UJT? List its applications One of the oddest semiconductor devices in use is the unijunction transistor (UJT). As its nam
Q. If a single phase motor fails to run or start slow what action to be taken. Ans: If it is not starting check the supply and test the winding if it found normal check
Energy stored in a capacitor During charging process by capacitor, it will get energy. Energy is stored in static form. The voltage in capacitor will enhance from 0 volt to E v
When both MT 2 and Gate are positive In this junction P 1 N 1 and P 2 N 2 are forward biased whereas junction N 1 P 2 is reverse biased. The gate current flows thr
MATLAB assignment
why we configure bjt using h parameter model
Complete the timing diagram of Figure of an SR latch.
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