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Q. Illustrate Transformer coupling?
In this method the primary winding of the transformer acts as a collector load and the secondary winding transfers the a.c. output signal directly to the base of the next stage. Such a coupling increases the overall circuit gain and the level of the inter stage impedance matching. However transformers with broad frequency response are very expensive and hence, this type of coupling is restricted mostly to the power amplifiers where efficient impedance matching is a critical requirement for maximum power transfer and efficiency. The amplifiers using this coupling scheme are called Transformer coupled amplifiers.
Capacitor Filter: A capacitor filter is connected directly across the load is displayed in figure. The property of a capacitor is that it permits ac component and blocks
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reading type of cro probe
1. Work out the voltage for the following arrangement of 1.5V cells : (to achieve a pass grade, solve problems with cells in series, parallel and series-parallel) 2.
Problem: (a) Compare the different MAC schemes, namely FDMA, SDMA, TDMA and CDMA. (b) Describe with help of diagrams the different phenomena involved in multipath propaga
Connect the 2 kHz (sin ωt) signal to input A of the "Adder" module Connect input B to ground (GND). Connect the outputof the"Adder"(GA+gB) to input A-CH1 of "Scope Selector".
The resistance of a wire is 60 ? at 25 o C and 65? at 75 o C. Find the resistance of wire at 0 o C and value of temperature co-efficient at 0 o C. Ans: Given R 25 = 60 ? a
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model reference adaptive controller for interacting coupled tank
Merits and Demerits of Collector-to-base bias: Merits: In this type of circuit the circuit stabilizes the operating point against differences in temperature and β (that i
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