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Q. What are the conditions required to be fulfilled to sustain the oscillations?
The conditions required to be fulfilled to sustain the oscillations are:
1. The loop gain must be greater than unity at oscillator frequency.
2. After the desired output level is reached, Ab must decrease to 1.
3. At oscillator frequency, net phase shift around the loop must be zero or integer multiple of 360 degrees so that the feedback signal is in phase with the starting infinitesimal voltage.
4. The amount of energy fed back to input must be sufficient to overcome the energy losses in the input circuit.
Decoder A decoder is logic circuit that energizes a particular output line for each combination of input signal. Fig shown the block diagram logic diagram and fu
Q. An FM station's modulator has a sensitivity k FM = 5π × 10 4 rad/s·V. A receiver uses a discriminator that has a gain constant of 10 -5 /π V·s/rad. Neglecting noise, determin
As we all know the next century demand for wireless technology is expected to be the commercial implementation of Software Defined Radio (SDR) paradigm to improve base station effi
Q A residence is supplied with a voltage v(t) = 110√2cos120πt Vand a current i(t) = 10√2cos120πt A. If an electricmeter is used tomeasure the average power, find the meter reading,
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Q. Illustrate the basic working of Modem? Modem: Modems are generally provided by network operators or by vendors who aren't necessarily the manufacturers of computer systems.
Q. Explain Analog communication system? Analog signals in an analog communication system can be transmitted directly via carrier modulation over the communication channel and d
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