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Studenta: Ion Claudia Florentina
Specializarea: Ingineria mediului
Dupa parametrul electric
stabilizat: Dupa metoda de stabilizare:
 Stabilizatoare de
tensiune
 Stabilizatoare de
curent
 Stabilizatoare
parametrice
 Stabilizatoare prin
compensare
 Stabilizatoare cu reactie
Dupa modul de conectare a elementului de
stabilizare:
 Stabilizatoare serie
 Stabilizatoare paralel
• In figura 3.11.a este prezentata schema de principiu a stabilizatorului,
alcatuit numai din diode Zener si rezistorul de ballast, R,
• in figura 3.11.b este data schema echivalenta a stabilizatorului,
• in figura 3.11.c este prezentata caracteristica liniarizata a diodei Zener
la polarizare inversa, pe care sunt reprezentate punctele de functionare
A, la tensiune minima si B, la tensiune maxima. Sursa de alimentare
(redresorul) furnizeaza tensiunea continua Ur si are rezistenta interna
Rr.
* In figura 3.12 este prezentata schema – bloc a unui
stabilizator cu compensare, in variant serie (figura
3.12.a), respective paralel (figura 3.12.b).
* Cele doua variante constructive, serie si paralel,
ale schemei-bloc a stabilizatorului cu reactie sunt
prezentate in figura 3.13.a, respective 3.13.b.
Va multumesc
pentru
atentia acordata!

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Ppt stabilizatoare de tensiune

  • 1. Studenta: Ion Claudia Florentina Specializarea: Ingineria mediului
  • 2. Dupa parametrul electric stabilizat: Dupa metoda de stabilizare:  Stabilizatoare de tensiune  Stabilizatoare de curent  Stabilizatoare parametrice  Stabilizatoare prin compensare  Stabilizatoare cu reactie
  • 3. Dupa modul de conectare a elementului de stabilizare:  Stabilizatoare serie  Stabilizatoare paralel
  • 4. • In figura 3.11.a este prezentata schema de principiu a stabilizatorului, alcatuit numai din diode Zener si rezistorul de ballast, R, • in figura 3.11.b este data schema echivalenta a stabilizatorului, • in figura 3.11.c este prezentata caracteristica liniarizata a diodei Zener la polarizare inversa, pe care sunt reprezentate punctele de functionare A, la tensiune minima si B, la tensiune maxima. Sursa de alimentare (redresorul) furnizeaza tensiunea continua Ur si are rezistenta interna Rr.
  • 5. * In figura 3.12 este prezentata schema – bloc a unui stabilizator cu compensare, in variant serie (figura 3.12.a), respective paralel (figura 3.12.b).
  • 6. * Cele doua variante constructive, serie si paralel, ale schemei-bloc a stabilizatorului cu reactie sunt prezentate in figura 3.13.a, respective 3.13.b.