Question

thanks god finally its done 100 percent with the help of all of u friends..if someone needs help message me i will be replying tomorrow morning ..

Answer 1

the formula of RTH plz

Answer 2

what abut q6 and q4

Answer 3

q4
1-(R*b*vIN)/(1+R*b)
2-(VS*(1+R*b)-vIN)/(1+R*b)

Answer 4

Formulas for Q3?
"For the last two parts assume I = 2A"
Also, formulas for Q6 please :)

Answer 5

plzz plzz Q3 and Q6

Answer 6

q6
Vin=45V, R1=1.5Ω, R2=2Ω, R3=6Ω, A=2 and B=0.5
1-i1=5
2-vo=7.5
3-vth=7.5

Answer 7

formulae

Answer 8

plzz post formulae

Answer 9

Thx EngSara

Answer 10

q6
the formula
1-Vo* (R3-(B*R1*R3)+R1+R2+A*R2)/(R3-B*R1*R3)=VIN
2-i1=V0/(R3-B*R1*R3)
3- vo = vth

Answer 11

Someone with Rth formula , would be appreciated !

Answer 12

RTH???

Answer 13

@ali_amjad , Brother , it is the last part of question 6

Answer 14

Anyone has the formulas of the Q3?

Answer 15

i don't know the Rth

Answer 16

@EngSara , same is the case here :-/

Answer 17

what about Q3

Answer 18

q3
if I=10
vo=2
if I=-3
vo= -1
if I =1
vo=0.333
v1=0.665

Answer 19

plzz the formula aor hint for Q3

Answer 20

the resistance of zener =1

Answer 21

Thx EngSara Again

Answer 22

you are welcome :)

Answer 23

i am trying Q3

Answer 24

@EngSara , how did you find out that if I = 10 , then vo = 2 ????

Answer 25

@EngSara not getting it in Q3

Answer 26

@chaand.i i dont thimk we sholud think zener as R=1 because if so then v0=7.5 . .??

Answer 27

@EngSara ????

Answer 28

engsara please help me with q3 what the formula or answer I 9a then vo =...I is -3 vo=..Iis 4 then v1= and vo=

Answer 29

chaand.i its to 3,3V but the zener cuts it down to 2V

Answer 30

Q3 for I=2A? What's the formula? :3

Answer 31

@Zozi what the formula for Q3

Answer 32

\[(2ohm/3ohm)*I\] for v1 and for v2 its half, but over two volts the zener cuts dovn the voltage to 2V

Answer 33

RTH pleasee

Answer 34

engsara please help......q6 I1, Vo, Vth, Rth formula pleaseeee?

Answer 35

Q6 Rth please, Vin=18V, R1=1.5Ω, R2=3Ω, R3=4Ω, A=1.5 and B=0.5.

Answer 36

i got it My Rth= 3.6

Answer 37

Q3: p1 : zener voltage sholud be less than the given current so vo=2V which is zener voltage
Q3: P2 : I1=( 0.66 * I ) . . . also find I2 = (0.33 * I) .. . Vo= I2
Q3: P3 : (a) I1=( 0.66 * I ) . . . also find I2 = (0.33 * I) .. . Vo= I2 . . (b) v1 = I1

Answer 38

@JoãoVitorMC how you got it?? Rth

Answer 39

I got my Rth here http://openstudy.com/study#/updates/5089b78de4b0d596c4603b9e

Answer 40

@chaand.i the volt must be 3.33 but when see the fig of zener , the max volt is 2

Answer 41

@JoãoVitorMC : if you consider zener as R=1phm resistor then this question would be much much simpler

Answer 42

R=1ohm

Answer 43

yes that's what i do, but this happens only then the voltage saw by the element is in the range -+2

Answer 44

yup because in the first part the current source is too big and then zener limits the voltage

Answer 45

Rth ???/

Answer 46

thank you @EngSara and @Zozi for help of Q3

Answer 47

RTH= Vth / ISC
Isc= Current on short circuit

How can I find the ISC?