Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

kavi11

Rth helpp....Vin =27V , R 1 =5Ω , R 2 =7Ω , R 3 =12Ω , A=6 and B=0.1 .

  • one year ago
  • one year ago

  • This Question is Closed
  1. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    put Isc=0.25 in rth=vth/Isc

    • one year ago
  2. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    it's just missing this one to me too .. Does anybody help me too ? Rth ... Vin=15V, R1=0.5Ω, R2=1.5Ω, R3=5Ω, A=2 and B=1.5.

    • one year ago
  3. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    cn u post formula of power in q2

    • one year ago
  4. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    Q2 is the same of HW3.. yeah.. for sure .. one minute !

    • one year ago
  5. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    EXPLANATION: VS=5.0 VOH=4.5 VIH=4.0 VIL=1.5 VOL=1.0 The low noise margin is defined as VIL−VOL. For this problem, it is 0.5V. As an example, if an inverter outputs a valid voltage signal of 1.0V (VOL) to another inverter, then that signal can rise by 0.5V all the way to VIL, before it becomes an invalid logical 0 input to the second inverter. The high noise margin is defined as VOH−VIH. For this problem, it is 0.5V. Again, if an inverter outputs a valid voltage signal of 4.5V(VOH) to another inverter, then that signal can fall by 0.5V, all the way to VIH before it becomes an invalid logical 1 input to the second inverter. The width of the forbidden region is defined as VIH−VIL. For this problem, it is 2.5V. Valid inputs to our logic family are not allowed to fall between VIH and VIL. When VGS for the MOSFET is below VT, the MOSFET behaves like an open circuit, and iDS=0. That means no voltage drops over RPUI and the output voltage of our inverter is VS, so this case is fine with out static discipline, since the output voltage is above VOH. For VGS≥VT, the MOSFET is on and behaves like a resistor with resistance RON with our model. To find RPUI: VOL=VS(RON)RON+RPUI 1=5(5000.0)(5000.0+RPUI)→RPUI=20000.0Ω Similar to the inverter case, when either MOSFET is off, no current can flow through the pullup resistor because the MOSFETs and pullup resistor are in series. So VOUT for the NAND gate is simply VS when either MOSFET is off. When both MOSFETs are on, they behave like resistors with resistance RON. The two MOSFETs are in series, so we calculate: To find RPUA: VOL=VS(2RON)2RON+RPUA 1=5(10000.0)(10000.0+RPUA)→RPUA=40000.0Ω When both MOSFETs are off, VOUT for the NOR gate is simply VS because no current can flow through either MOSFET or RPUO. When one MOSFET is on, VOUT is: VS⋅(0.5)RON(0.5)RON+RPUO because the MOSFETs are in parallel with each other. For the cases with one MOSFET on or both MOSFETs on, VOUT must be at least as small as VOL. For the case with one MOSFET on, RPUO must be at least 20000.0 Ω. For the case with both MOSFETs on, RPUO must be at least 10000.0 Ω. So for our NOR gate to satisfy the static discipline, RPUO must be at least 20000.0 Ω. When the MOSFET in the inverter is off, no power is consumed because no current can flow as the MOSFET behaves like an open circuit. When it is on, VS must drop over RPUI and RON, so the power consumed is: (VS)2RPUI+RON Power consumed by inverter: 25V5000.0+20000.0Ω=0.001W When either MOSFET is off, no current flows through the MOSFETs or RPUA, so there is no power consumed. When both MOSFETs are on, VS must drop over RPUA and 2RON because the MOSFETs are in series with each other. The power consumed in this case is: (VS)2RPUA+2RON Power consumed by NAND: 25V2⋅5000.0+40000.0Ω=0.0005W When both MOSFETs are off, no curernt can flow, so no power is consumed. When one MOSFET is on, VS must drop over RPUO and RON, so the power consumed is: (VS)2RPUO+RON When both MOSFETs are on, VS must drop over RPUO and 12 RON because the MOSFETs are in parallel, so the power consumed is: (VS)2RPUO+0.5(RON) The maximum power is consumed by the NOR gate in the latter case: 25V(5000.0∥5000.0)+20000.0Ω=0.001111W

    • one year ago
  6. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    i forget the formula..

    • one year ago
  7. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    VIL−VOL

    • one year ago
  8. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    the first one

    • one year ago
  9. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    thnx dude

    • one year ago
  10. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    The high noise margin is defined as VOH−VIH

    • one year ago
  11. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    The width of the forbidden region is defined as VIH−VIL

    • one year ago
  12. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    can u plss solve this for me.. may b some calculation error vT=2, Ron =18000

    • one year ago
  13. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    To find RPUI: VOL=VS(RON)/RON+RPUI

    • one year ago
  14. ThundaCheese
    Best Response
    You've already chosen the best response.
    Medals 0

    Rth formula for Q6?

    • one year ago
  15. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah.. I'll solve .. one minute .. I don't know yet Thunda.. I am really want to know too

    • one year ago
  16. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    I really want *

    • one year ago
  17. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    give me the values Vs etc etc ...

    • one year ago
  18. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    hey put Isc =0.75 in formula rth=vth/Isc

    • one year ago
  19. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    Vs=5v

    • one year ago
  20. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    what nurali?

    • one year ago
  21. ThundaCheese
    Best Response
    You've already chosen the best response.
    Medals 0

    Thanks a bunch!!

    • one year ago
  22. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    and what about Vol ? what's value yours ?

    • one year ago
  23. Nurali
    Best Response
    You've already chosen the best response.
    Medals 0

    reply aditya

    • one year ago
  24. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    1 min

    • one year ago
  25. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    short circuit that circuit then calculate the current in that circuit., now that current I=Isc+B*vb

    • one year ago
  26. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    Vol=1V

    • one year ago
  27. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    try this value 72000 ... because Vol=Vs*Ron/Ron*Rput then we have 1=5*18000/18000+Rput to be 1= 1 the variable Rput is 72000

    • one year ago
  28. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    hey for power of nand the formula is : Vs^2/(Rpul+2*Ron) but i got wrong answer

    • one year ago
  29. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    I'll help you.. 1 m

    • one year ago
  30. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    maybe your Rpua is not correct.. give me this value.. Rpua

    • one year ago
  31. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    hey i got.. thanx..:)

    • one year ago
  32. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    ooh no problem.. did you get entire Q2 ?

    • one year ago
  33. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    yup

    • one year ago
  34. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    great !!

    • one year ago
  35. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    can you help with Rth in Q6 ?

    • one year ago
  36. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    Isc=0,75.. is it this value that you said ?

    • one year ago
  37. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    yupp.. 0.75

    • one year ago
  38. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    what is your vth?

    • one year ago
  39. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    it's 3

    • one year ago
  40. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    vout= vth ... it's 3

    • one year ago
  41. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    rth=4

    • one year ago
  42. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    it's my last chance.. it's final check ..

    • one year ago
  43. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    is it really 4 ?

    • one year ago
  44. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    so wait.. 1st i recheck

    • one year ago
  45. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    thank you so much

    • one year ago
  46. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    look my values are Vin=15V, R1=0.5Ω, R2=1.5Ω, R3=5Ω, A=2 and B=1.5.

    • one year ago
  47. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    rth=4

    • one year ago
  48. aditya16
    Best Response
    You've already chosen the best response.
    Medals 3

    get correct?

    • one year ago
  49. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah... THANK YOU SO MUCH !

    • one year ago
  50. akash97
    Best Response
    You've already chosen the best response.
    Medals 0

    @kavi11: ur ans 1) 0.45 2)2.7 3)2.7 4)10.8

    • one year ago
  51. xmark
    Best Response
    You've already chosen the best response.
    Medals 0

    @akash97 : how do u get that ? can you post the formula ?

    • one year ago
  52. akash97
    Best Response
    You've already chosen the best response.
    Medals 0

    @xmark : I got using analysis der is no kind of formula dar I use directly

    • one year ago
  53. Qaisersatti
    Best Response
    You've already chosen the best response.
    Medals 0

    Vin 27 v R1 5 ohm r2 = 7 Ohms R3 12 Ohms A=6 and B=0.1 QNO6 answers please please please ?

    • one year ago
  54. Qaisersatti
    Best Response
    You've already chosen the best response.
    Medals 0

    time is running out for my friend....

    • one year ago
  55. Logan2
    Best Response
    You've already chosen the best response.
    Medals 0

    question 6 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 4)Rth=Vth/Isc I=Isc+B*vb

    • one year ago
  56. charansg
    Best Response
    You've already chosen the best response.
    Medals 0

    http://openstudy.com/study#/updates/508b8bc0e4b077c2ef2e9093

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.