Jone133
Formulas for Q3?
"For the last two parts assume I = 2A"
Also, formulas for Q6 please :)
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EngSara
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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
but i don't know the RTH
ali_amjad
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Rth plzzzz
Jone133
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Thank you Sara! I'm still missing Rth formula, and the 2nd part of Q3 ones...
Zozi
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When I=2 v1 is 1,32 and v2 is 0,66
Jone133
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Thank you zozi, but that seems to be wrong:c
Jone133
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what formulas did you use?
My Resistances are 1ohm
Zozi
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just valculating v1, one 1 ohm and two serial resistors in paralel means a 0,66ohm resistor. From this U=I*R for v1 and for v0 its a half divider from two one ohm resistor...
benzo
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sara do you mean I1= vin/(r3-b*r1*r3
vo=vin*(r3-(b*r1*r3)+r1+r2+a*r2)/(r3-b*r1*r3)
benzo
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q6
JoãoVitorMC
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Q6 Rth please Vin=18V, R1=1.5Ω, R2=3Ω, R3=4Ω, A=1.5 and B=0.5.
brunofornari
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como vc fez o Q3, Joao?
JoãoVitorMC
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eu achei aki as respostas para o meu
Jone133
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Thank you once again zozi, it was v0= 0.666 and v1=1.32, it was the other way around
Also, for you Joao Vitor, RTH = 3.6
benzo
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jones what the formula for q6
brunofornari
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are you sure abt that, Jone133?
Jone133
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Yes, for I=2A on Q3 and for the values of JoaoMC on Q6
JoãoVitorMC
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THANK YOU SOO MUCH!!
Jone133
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RTH= Vth / ISC
Isc= Current on short circuit
benzo
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I1
Vo
Vth
Rth
JoãoVitorMC
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3
but how did you calculate the Rth ???
JoãoVitorMC
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Finally 100% \o/
Jone133
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congrats! It's a great accomplishment, I hope I get 100% too on the final :D
benzo
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formula please jones...
brunofornari
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Hey Jone133.. my values are: 10A and -3A for v0 and 5A for v1 and v0
brunofornari
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Dá uma força com o 6 aí, joao?? =D
Jone133
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I don't have formulas, sorry... I Only know that RTH = VTH / Isc and Isc is the current on short circuit. Zizo told me the values for Q3.
benzo
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mc congrats q6 whats the formula
Jone133
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para os valores de JoaoMC, Vo, I and Vth are 1.8
The formulas are on the 1st answer
benzo
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ok I1 and vo
Jone133
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also, vo = vth
JoãoVitorMC
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Q6: Vin=18V, R1=1.5Ω, R2=3Ω, R3=4Ω, A=1.5 and B=0.5.
1.8
1.8
1.8
3.6
JoãoVitorMC
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but still no formulas...
Jone133
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For Q3 v0= 0,66*I/2 but if its over +/- 2V the zener cuts it to +/-2V
(found zizo's answer on another question)
Jone133
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Thank you Zozi!
Zozi
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and v1 is 0,66*I
benzo
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JoãoVitorMC u is the mannn thank u
JoãoVitorMC
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3
welcome :)
JoãoVitorMC
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i will post soon a topic here about solve all the Question 3 and others that i complete understant.
brunofornari
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Eu vi que teu Rth deu o dobro do teu Vth.. posso assumir isso pro meu, será? meu vth tá em 7.5
JoãoVitorMC
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3
acho melhor não arriscar não
JoãoVitorMC
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espera até amanha, deve aparecer mais soluções
JoãoVitorMC
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agora q acabei aki, vou trabalhar em como encontrar as respostas e irei postar aki o mais rapido possivel
ali_amjad
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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
ali_amjad
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what is Isc in Q6
ali_amjad
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Rth help plzzz
vivek2609
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if you assume I=2A then the current through the parallel resistor will be 1.3333 A ant V1 will be(1ohm*1.333) 1.333V the remaining current flows through the zener diode its resistance will be 1ohm so v0 will be 0.667v
kaplko
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anyone qno 4 part first equation????