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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
operation of Shaded-pole motors
The conditions necessary for sustained oscillation can be summarized as follows: 1. There should be a positive feedback. 2. The loop gain of the circuit must be equal to or g
Q. For the capacitor shown in Figure connected to a voltage source, sketch i(t) and w(t).
How address and data lines are demultiplexed in 8085? AD0-AD7 lines are multiplexed and the lower half of address A0-A7 is available only during T1 of the machine cycle. This
Connection of Shunt Capacitors at 11 kV Substations 11 kV automatic switched capacitor banks are installed on bus of 33 or 66 kV substations. This has the facility that the re
Preventive and Regular Maintenance Preventive and regular manages of components of the distributions system is necessary to reduce/eliminate breakdowns. Care should be taken t
Q. Find idealized expressions for the active and ohmic states and sketch the universal characteristics of an n-channel enhancement MOSFET operated below breakdown.
Write discussion on Construction and working of analog type storage oscilloscope
The Maximum clock frequency in 8086 is 5 MHz .
HLT Halt Instruction The microprocessor halts the execution of the program and enters into the wait state the address and data bus are placed in the high impedance st
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