ECE312_lec05

3rd Year, Faculty of Eng. at Shoubra
lec#5, Electronic Circuits (A)

Transcript

1. Lecture # 5 Hybrid Equivalent Model Instructor: Dr. Ahmad El-Banna Benha University Faculty of Engineering at Shoubra November 2014 ECE-312 Electronic Circuits (A) © Ahmad El-Banna
2. Agenda Two-Port Systems Approach Cascaded Systems The Hybrid Equivalent Model Approximate & Complete h-model Hybrid π Model Troubleshooting and Practical Applications 2 © Ahmad El-Banna ECE-312 , Lec#5 , Nov 2014
3. TWO PORT SYSTEMS APPROACH 3 © Ahmad El-Banna ECE-312 , Lec#5 , Nov 2014
4. 2-Port System 4 ECE-312 , Lec#5 , Nov 2014 © Ahmad El-Banna
5. 2-Port System.. 5 ECE-312 , Lec#5 , Nov 2014 © Ahmad El-Banna
6. CASCADED SYSTEMS 6 ECE-312 , Lec#5 , Nov 2014 © Ahmad El-Banna
7. Cascaded Systems 7 ECE-312 , Lec#5 , Nov 2014 © Ahmad El-Banna • Examples: RC Coupled ct & Cascode ct • Check Examples: 5.15 & 5.16
8. THE HYBRID EQUIVALENT MODEL 8 ECE-312 , Lec#5 , Nov 2014 © Ahmad El-Banna
9. The Hybrid Equivalent Model 9 ECE-312 , Lec#5 , Nov 2014 © Ahmad El-Banna • The re model has the advantage that the parameters are defined by the actual operating conditions, • the parameters of the hybrid equivalent circuit are defined in general terms for any operating conditions.     short-circuit forward transfer current ratio parameter short-circuit forward transfer current ratio parameter open-circuit reverse transfer voltage ratio parameter short-circuit input-impedance parameter
10. Transistor Hybrid Equivalent ct 10 ECE-312 , Lec#5 , Nov 2014 © Ahmad El-Banna • For Transistor:
11. Hybrid vs. r e model 11 ECE-312 , Lec#5 , Nov 2014 © Ahmad El-Banna
12. APPROXIMATE & COMPLETE H-MODEL 12 ECE-312 , Lec#5 , Nov 2014 © Ahmad El-Banna
13. Approximate h-model 13 ECE-312 , Lec#5 , Nov 2014 © Ahmad El-Banna • Fixed Bias ct • Check other configurations !!
14. Complete h-model 14 ECE-312 , Lec#5 , Nov 2014 © Ahmad El-Banna