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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
With the help of neat and clean diagram illustrate the working of Elecro Static Precipitator (ESP). Describe the following: (a) Coal Handling Systems (b) Coal Storage
Q. Draw the basic structure of an SCR and the common circuit symbol ? The SILICON CONTROLLED RECTIFIER, usually referred to as an SCR, is one of the families of semiconductors
how to design colpitts oscillator?
Octal to binary Conversion Conversion form octal to binary is the reverse of this process. Express each octal digit in three bit binary equivalent. Ex. Convert 3576
Solution for dc motor speed and position controller
Q. Explain working of Presentation Layer? This is concerned with format of the data represented, in order to overcome difference in representation of information as supplied to
A forward converter has the following parameters: input source voltage V s = 100 V, N 1 /N 2 = N 1 /N 3 = 1, magnetizing inductance L m = 5 mH, output inductor L o = 200 μH, C
eddy current depends on
Frequency variation in simple transmitters can be reduced by adding a _______ stage.
Ask qu1. If the resistor Radj is adjusted to 175O what is the rotational speed of the motor at no-load conditions? 2. Assuming no armature reaction, what is the speed of the motor
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