Tranzistori Flashcards

1
Q

Elementele care emit electroni/sarcini negative

A

Catod(K)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Campul electric are sensul intr-un circuit de la _ la _

A

+ la -

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Semiconductor intrisec =

A

pur(neajustat)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Semiconductor extrinsec =

A

dopat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Care este proprietatea unui semiconductor

A

Pana la un prag de temperatura, se comporta ca un izolator, dupa prag, ca un conductor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

semiconductor NP: Cum se numeste zona dintre 2 semiconductori diferiti

A

Zona barierei de potential(depletion zone)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Curent de saturatie I0=

A

Curentul care apare la polarizare inversa in zona barierei de potential(prin purtatorii minoritari de sarcina)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Intotdeauna _ este terminalul care are sageata pe el

A

emitorul

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Ce arata sageata de pe terminal

A

Sensul diodei

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

forward bias = ?

A

polarizare directa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Intensitatea prin Colector =

A

Beta * iBaza

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Ce e Regiunea Activa Normala = ?

A

zona de pe grafic cand tranzistorul se deschide(trece din starea de blocat,) pana cand conduce cat poate de bine(U0 devine 0, Uin creste )

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Punct de functionare = ?

A

Tensiunea de intrare constanta, care pentru amplificator se afla in regiunea activa normala

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Cele 3 caracteristici ale tranzistorului

A

De intrare, iesire, transfer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Sistem de ecuatii hibrid = ?

A

modelez o Tensiune si o Intensitate(nu era hibrid daca modelam tensiune intr si tensiune iesire)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Ce da Impedanta de iesire(Zout)?

A

Diferenta intre Tensiunea de mers in gol si Tensiunea de sarcina (cu cat e mai mare impedanta de iesire, cu atat e mai mare diferenta atunci cand cuplezi un difuzor la iesire)

17
Q

Cum e impedanta de intrare in etajul Emitor Comun?

A

mica

18
Q

Cum e aplificarea in tensiune/amplificarea in curent in etajul Emitor Comun?

A

mari amandoua

19
Q

Pentru ce e folosit deobicei etajul EC?

A

sa amplifice tensiunea