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Electrical and electroinc - Essay Example

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a fraction of the output energy is returned back to the input of the same circuit. There are two types of feedback.
This is where the feedback signal is in phase with the input…
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Electrical and electroinc
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It provides high gain in signal process. Despite this, positive feedback is prone to oscillations, poor frequency response, prone to more distortion and prone to more drift. This is where the feedback signal is 1800 out of phase with the input signal. In this scenario, the feedback is in such a way that it opposes the input signal. In negative feedback circuit, the feedback signal is connected in such a way that it is out of phase with the input signal. As a result, the feedback signal subtracts from the input resulting in lower amplitude output signal as compared to what could have been in the absence of the amplifier. 1. Gain stability.

This is because the general gain of feedback amplifier is independent of internal gain and only is dependent on the feedback ratio. Also, the feedback ratio solely depends on passive elements which include resistors and amplifiers. Oscillation occurs when the feedback system is unable to find a stable steady state since the transfer function can’t be satisfied considering this scenario, the system becomes unstable when 1+Aβ = 0. Crystal oscillators are advantageous over other type of oscillators.

This is because in case excitement, they oscillate at precise frequency because of the mechanical make associated with it. When compare to an electronic oscillator, its frequency can be made to shift with

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