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J601_lec11

Ahmad El-Banna
December 28, 2014

 J601_lec11

5th Year, ITEC
lec#11, Electronic Pricncipals

Ahmad El-Banna

December 28, 2014
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  1. Lecture #11 Feedback Circuits Instructor: Dr. Ahmad El-Banna December 2014

    J-601-1448 Electronic Principals Integrated Technical Education Cluster At AlAmeeria‎ © Ahmad El-Banna
  2. Agenda 2 J-601-1448 , Lec#11 , Dec 2014 © Ahmad

    El-Banna Feedback Concepts Feedback Connection Types Practical Feedback Circuits
  3. Simple block diagram of feedback amplifier 3 J-601-1448 , Lec#11

    , Dec 2014 © Ahmad El-Banna Some improvements are : 1. Higher input impedance. 2. Better stabilized voltage gain. 3. Improved frequency response. 4. Lower output impedance. 5. Reduced noise. 6. More linear operation.
  4. FEEDBACK CONNECTION TYPES 4 J-601-1448 , Lec#11 , Dec 2014

    © Ahmad El-Banna • Series feedback connections tend to increase the input resistance, whereas shunt feed-back connections tend to decrease the input resistance. • Voltage feedback tends to decrease the output impedance, whereas current feedback tends to increase the output impedance.
  5. Effects of feedback on Gain and Bandwidth 9 J-601-1448 ,

    Lec#11 , Dec 2014 © Ahmad El-Banna
  6. Using OP-Amp & Emitter follower 11 J-601-1448 , Lec#11 ,

    Dec 2014 © Ahmad El-Banna Check EXAMPLE 14.4
  7. • For more details, refer to: • Chapter 14, Electronic

    Devices and Circuits, Boylestad. • The lecture is available online at: • https://speakerdeck.com/ahmad_elbanna • For inquires, send to: • [email protected] 14 © Ahmad El-Banna J-601-1448 , Lec#11 , Dec 2014