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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
Define the term Causality LTI System Any practical LTI system operating in real time must be "causal" which means that its impulse response {h[n]} must satisfy h[n] = 0 for n
hi PA DS:1234 = AB PA DS:1235 = CD if i typed mov DX,[1234H] WHAT SHOULD I GET IN DX ?
Determine the number of bits of a natural binary encoder that works with the quantizer: a) If the extreme levels are ±3.1 V, with a step size of 0.2 V. (b) If there are 128 q
Bus Organisation Set of communication lines in microprocessor which carry bits from microprocessor to peripherals ( memory inputs ports output ports and other chips
For the 3-bit 2 n -R D/A converter of Figure, calculate the analog output voltage when the input is (a) 100, and (b) 010. Solution a. For the binary input 100, switches con
Write discussion on Construction and working of analog type storage oscilloscope
Machine Language ( First Generation Language) As we have already discussed that all digital circuits can identify only two states which can be specified by 0 and i henc
\ Transistor voltmeter (TVM) : a simple diagram of TVM using two transistors in the bridge configuration is as shown. TVM is provided by using transistor bridge circuits. In b
Figure shows an isolated three-phase load supplied from a 33 kV/11 kV substation via a 30 km long three-phase 11 kV overhead line. The overhead line has the following series parame
Explain Stator of a Synchronous Machine? The stator of a synchronous machine is made of thin laminations of highly permeable (silicon) steel in order to reduce the core losses.
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