Question: code class = asciimath > 6 . ( a ) What is Negative feedback and Positive Feedback Amplifiers? ( b ) Feedback system can be

code class="asciimath">6.(a) What is Negative feedback and Positive Feedback Amplifiers? (b)Feedback system can be found in many applications. Explain one of the biological systems where negative feedback is used. (c) Differentiate series and shunt-operated crystal oscillator. Provide your ideas for the use of crystal oscillators in ECG and EEG recordings.

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