CUPRINS. 3. Dispozitive multijoncńiune 3.1. Dioda PNPN 3.2. Tiristorul convenńional 3.3. Triacul 3.4. Tranzistorul unijoncńiune

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1 CUPRINS DISPOZITIVE ELECTRONICE ŞI ELECTRONICĂ ANALOGICĂ Cristian Bucur Introducere Cuprins Modulul A 1. Dioda semiconductoare 1.1. Caracteristici statice 1.2. Semiconductori intrinseci 1.3. Semiconductori extrinseci 1.4. DensităŃi de curent în semiconductori 1.5. JoncŃiunea p-n la echilibru termodinamic 1.6. Polarizarea joncńiunii P-N 1.7. Fenomene care modifică caracteristica statică 1.8. Circuite echivalente în regim static 1.9. Circuite echivalente în regim cvasistańionar Tipuri de diode semiconductoare cu joncńiune Principiul superpozińiei Circuite de redresare Stabilizatorul parametric 2. Tranzistori 2.1. Teoria elementară a TBP 2.2. Modele în regim static 2.3. Caracteristici statice ale TBP 2.4. Polarizarea TBP în zona activă de funcńionare 2.5. Regimul variabil al TBP 2.6. Caracteristici statice ale TEC 2.7. Polarizarea tranzistorului cu efect de câmp 2.8. Circuite echivalente ale TEC 3. Dispozitive multijoncńiune 3.1. Dioda PNPN 3.2. Tiristorul convenńional 3.3. Triacul 3.4. Tranzistorul unijoncńiune

2 3.5. Tiristorul MOS 3.6. Tiristorul GTO cu blocare pe poartă 3.7. Tiristorul Darlington 3.8. Tiristorul I.G.B.T Aria de diode controlată Teste de autoevaluare A Modulul B 4. Amplificatoare de semnal mic 4.1. Parametrii amplificatoarelor de semnal mic 4.2. Amplificatorul cu TBP in conexiune EC 4.3. Amplificatorul cu TBP in conexiune CC 4.4. Amplificatorul cu TBP in conexiune BC 4.5. PerformanŃele amplificatoarelor cu TBP 4.6. Etaje cu tranzistori compuşi 4.7. Structuri pentru creşterea impedanńei de ieşire 4.8. Structuri pentru creşterea impedanńei de intrare 5. Amplificatoare cu reacńie negativă 5.1. ConsideraŃii privind reacńia negativă (RN) 5.2. Topologii ale amplificatoarelor cu reacńie 5.3. RN cu eşantionare în nod şi comparare în nod 5.4. Metodica de rezolvare a amplificatoarelor cu RN 5.5. RN cu comparare buclă şi eşantionare buclă 5.6. RN cu eşantionare pe buclă şi comparare în nod 5.7. RN cu eşantionare în nod şi comparare pe bucla 5.8. PerformanŃe ale topologiilor de reacńie 6. Amplificatoare de putere 6.1. Amplificatoare de putere în clasă A 6.2. Amplificatoare de putere în clasă B 7. Amplificatoare integrate 7.1. Amplificatoare diferenńiale 7.2. Amplificatoare operańionale 7.3. Amplificatoare de transimpedanńă (Norton) 7.4. Amplificatoare de putere

3 7.5. Amplificatoare cu impedanńă de intrare foarte mare 7.6. Amplificatoare de instrumentańie 7.7. Amplificatoare de izolańie Teste de autoevaluare B Modulul C 8. Stabilizatoare liniare de tensiune continuă 8.1. Parametrii stabilizatoarelor (ST) 8.2. Topologia stabilizatoarelor liniare 8.3. ST în buclă deschisă cu element de comandă serie 8.4. ST în buclă deschisă cu element de reglaj paralel 8.5. ST în buclă închisă de reacńie, element de reglaj serie 8.6. ST cu tranzistori bipolari în buclă închisă de reacńie 8.7. Circuite pentru protecńia stabilizatoarelor 8.8. Stabilizatoare cu circuite integrate 9. Oscilatoare electronice 9.1. Principii de realizare a oscilatoarelor cu reacńie pozitivă 9.2. Oscilatoare armonice cu reacńie pozitivă de tipul RC 9.3. Oscilatoare armonice LC 10. Circuite electronice de putere Redresoare de putere Variatoare de tensiune alternativă Variatoare de tensiune continuă Invertoare Teste de autoevaluare C SoluŃiile testelor Bibliografia

4 Bibliografia 1. Alexa D., Micu D., Invertoare si redresoare cu parametri energetici ridicańi, Ed. Tehnica, Bucuresti 1986; 2. Alexa D.,Hrubaru O., AplicaŃii ale convertoarelor statice de putere, Ed. Tehnica, Bucuresti 1989; 3. Ardelean I., Gurgoiu H., Petrescu L., Circuite integrate CMOS, Manual de utilizare, Ed.Tehnică, Bucureşti,1987; 4. Ardelean Z., Folescu Gh., Captatoare solare, Ed. ŞtiinŃifică şi Enciclopedică, Bucureşti, 1980; 5. Bucur Cr., Dispozitive electronice, Ed. UniversităŃii din Ploieşti, Ploieşti, 2005; 6. Bucur Cr., Circuite electronice, Ed. UniversităŃii din Ploieşti, Ploieşti, 2005; 7. Bodea M., Vătăşeanu A., ş.a., Circuite integrate liniare Manual de utilizare, Vol II,III,IV, Ed. Tehnică, Bucureşti, ; 8. Ciontu A., ş.a., 153 montaje practice, Ed. Teora, Seria Electronică nr. 24, Bucureşti, 1998; 9. Ciugudean, M., ş.a., Circuite integrate liniare-aplicańii, Ed. Facla, Timişoara, 1986; 10. Dascălu D., Rusu A., Profirescu M., Costea I., Dispozitive şi circuite electronice, Ed. Didactică şi Pedagogică, Bucureşti, 1982; 11. Dixon L.H., Average Current Mode Control of Switching Power Supplies, Unitrode Power Supply Design Seminar Manual SEM700,1990; 12. Dixon L.H., Design of Flyback Transformers and Filter Inductors, Unitrode Power Supply Design Seminar Manual SEM400, 1985; 13. Erickson R. W., Fundamentals of Power Electronics, New York: Chapman and Hall, 1997; 14. Everett Rogers, Understanding Boost Power Stages in Switch mode Power Supplies, Application Report SLVA061; 15. Feştilă I., Simion E., Miron C., Amplificatoare audio şi sisteme muzicale, Ed. Dacia, Cluj Napoca, 1990; 16. Finnegan T., Curent sources and mirrors, Electronic Engineering,Vol. 68,no. 830, 1996; 17. Herşcovici H., Circuite integrate în aparatura de automatizare,, Ed Tehnica, Bucuresti, 1976; 6

5 18. Ianache C., Convertoare statice, dispozitive semiconductoare şi redresoare de putere, Ed. UniversităŃii din Ploieşti, Ploieşti, 2000; 19. Fl. Ionescu,s.a., Electronică de putere - Convertoare statice, Ed. Tehnica Bucureşti 1998; 20. A.Kelemen,s.a., Mutatoare-aplicaŃii, Ed. Did. şi Pedagogică,Bucuresti 1980; 21. Lăzăroiu A., Naicu S., 365 scheme practice cu circuite integrate CMOS, Ed. NaŃional, Bucureşti, 1999; 22. Lăzăroiu A., Naicu Ş., Generatoare de semnal analogice şi digitale, Ed. Matrix, Bucureşti, 2000; 23. Liu K. H., Lee F. C., Resonant Switches a Unified Approach to Improved Performance of Switching Converters, Proceedings of the International Telecommunications Energy Conference, November 1984; 24. Lojewski G., Microunde, Dispozitive şi circuite, Ed. Teora, 1995; 25. Matlac I., Convertoare electromagnetice, Ed.Facla 1987; 26. Middlebrook R. D., Cuk S., A General Unified Approach to Modeling Switching-Converter Power Stages, International Journal of Electronics, Vol. 42, No. 6, pp , June Minescu M., Avramescu V., Tehnologii electronice, Ed. UniversităŃii din Ploieşti, 2003; 28. Mitrofan Gh., Generatoare de funcńii, Ed. Teora, Bucureşti,1999; 29. Ponner I., Electronică industrială,ed. Did. şi Pedagogică, Bucuresti 1973; 30. Popescu V., Electronică de putere, Ed. de Vest, Timişoara 1998; 31. Popescu V., Convertoare de putere în comutańie, Ed. de vest, Timişoara 1999; 32. Râpeanu R., ş.a., Circuite integrate analogice, Ed. Tehnică, Bucureşti, 1982; 33. C. Radoi,s.a., Circuite şi echipamente electronice industriale, Ed. Tehnica, Bucuresti 1986; 34. Rogers E., Control Loop Modeling of Switching Power Supplies, Proceedings of EETimes Analog and Mixed-Signal Applications Conference, July 13-14, 1998, San Jose; 35. Simion E., Miron C., Feştilă L., Montaje electronice cu circuite integrate analogice, Ed. Dacia, 1986; 7

6 36. Spînulescu I., Pârvan R., Principiile fizice ale microelectronicii, Ed. ŞtiinŃifică şi Enciclopedică, Bucureşti, 1981; 37. Sporea D., Bârcă-GălăŃeanu S., Circuite optoelectronice, Ed. Militară, Bucureşti, 1986; 38. Strainescu I.,Variatoare statice de tensiune continuă, Ed.Tehnica,Bucuresti 1983; 39. Străinescu I., Condruc M., Tiristorul, caracteristici, comandă, protectie, utilizare, Ed.Tehnică, Bucureşti,1988; 40. Tabisz W. A., Lee F. C., Zero-Voltage Switching Multi- Resonant Technique A Novel Approach to Improve Performance of High Frequency Quasi-Resonant Converters, IEEE Power Electronics Specialists Conference 1988; 41. Tebeanu T., Spornic A., Oscilatoare de microunde, Ed Tehnica, Bucureşti, 1990; 42. Vătăşeanu A., Bodea M., ş.a., Circuite integrate liniare Manual de utilizare, Vol I, Ed. Tehnică, Bucureşti, 1979; 43. Vitaljie F.N., Programmable noise generator, Electronic Design, ian 1996; 44. Voiculescu E., MariŃa T., Optoelectronică, Ed. Albastră, Cluj-Napoca, 2001; 8

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