Question

MIDTERM
A linear circuit is shown below.
Pic: http://i45.tinypic.com/206flvd.png
The elements in this circuit have the following values: R1=200Ω, R2=200Ω, R3=100Ω, V1=5V, I1=0.001A and I2=0.005A
Determine the potentials at nodes A and B, assuming a ground node as shown in the figure.

(a) What is the value of voltage vA in Volts?
(b) What is the value of voltage vB in Volts?
Now let us determine if the answers you came up with satisfy the laws of physics.

What is the power (in Watts) dissipated in resistor R1?
What is the power (in Watts) dissipated in resistor R2?

Answer 1

What is the power (in Watts) dissipated in resistor R3?
What is the power (in Watts) coming out of the voltage source V1?
What is the power (in Watts) coming out of the current source I1?
What is the power (in Watts) coming out of the current source I2?

Answer 2

MIDTERM 2
For many purposes of gate design, we can model a MOSFET used as a switch simply as as an ideal switch and an "on-state resistor" RON. This is the SR model.

Assuming this model for the MOSFET, consider the inverter in the figure. This inverter is intended to be used as an element in a logic family with NAND and NOR gates.
Pic: http://i50.tinypic.com/4kgxf9.png
The static discipline required for this family is:
VS=5.0V, VOH=4.5V, VIH=4.0V, VIL=1.5V, VOL=1.0V.
What is the low noise margin (in Volts)?
What is the high noise margin (in Volts)?
What is the width of the forbidden region (in Volts)?
Suppose that the threshold voltage for the MOSFET is VT=2.0V and RON=19000.0Ω.

What is the minimum value of the pullup resistor RPuI (in Ohms) for which this inverter can obey the required static discipline?
Now, consider the NAND gate of this family. What is the minimum value of the pullup resistor RPuA (in Ohms) for which this inverter can obey the required static discipline?

How about the NOR gate of this family. What is the minimum value of the pullup resistor RPuO (in Ohms) for which this inverter can obey the required static discipline?

Assume that we implemented this family with the minimum pullup resistors that you have already calculated.

What is the maximum power (in Watts) consumed by the inverter?

What is the maximum power (in Watts) consumed by the NAND?

What is the maximum power (in Watts) consumed by the NOR?

Answer 3

MIDTERM 3

A nonlinear device Z has the i-v relationship shown below.
Pic: http://i50.tinypic.com/e9vgp5.png
This device is used in the circuit shown below, where "I" is the value of the current source.
Pic: http://i49.tinypic.com/2zs741c.png

Assuming that I=10A, what is the value of the voltage vo (in Volts)?

Now assuming that I=−3A, what is the value of the voltage vo (in Volts)?

Finally, for the last two parts assume that I=5A.

What is the value of the voltage vo (in Volts)?

What is the value of the voltage v1 (in Volts)?

Answer 4

MIDTERM 4

A startup company TransGadget has invented a new type of MOS-gated transistor called ExtremeT. The symbol for ExtremeT and its terminal voltage-current characteristics are given below:

Pic: http://i50.tinypic.com/2lc0n05.png

TransGadget wants to determine the usefulness of their invention by examining the large-signal input-output characteristics of two amplifiers built using ExtremeT. They hire you to figure this out.

First a source follower amplifier is built using ExtremeT, as shown below.

Pic: http://i47.tinypic.com/211nj9y.png

What is the expression for vOUT in terms of vIN, R, and b when vIN is greater than 0V?

ExtremeT is now used to build a different type of amplifier which uses two transistors as shown below.

Pic: http://i50.tinypic.com/rmmn4g.png

What is the expression for vOUT in terms of vIN, VS, R, and b for this amplifier when vIN is greater than 0V?

Answer 5

MIDTERM 5

The startup company TransGadget has also invented a MOS-gated transistor called SuperT, with the symbol and terminal voltage-current characteristics given below.

Pic: http://i45.tinypic.com/2sacjs8.png

Engineers of TransGadget build a common source amplifier using SuperT as shown below.

Pic: http://i47.tinypic.com/xpa7hd.png

Here, VS=80V, R=1.5kΩ, and the transistor parameter f=2mAV3. The amplifier is biased with VIN=2V.

What is the dc operating point (bias) output voltage VOUT (in Volts) of this amplifier?

What is the small signal gain (vOUT/vIN) of this amplifier when it is biased as above?

Answer 6

PICTURES TO MIDTERM 4
Pic 1:
http://i48.tinypic.com/v46lxf.png
Pic 2:
http://i50.tinypic.com/2lc0n05.png
Pic 3:
http://i50.tinypic.com/rmmn4g.png

Answer 7

MIDTERM 6

The circuit below contains two dependent sources: a voltage controlled voltage source and a voltage controlled current source.

Pic: http://i47.tinypic.com/71oj03.png

The circuit elements have the following values: Vin=42V, R1=4Ω, R2=4Ω, R3=7Ω, A=1.5 and B=0.125.

What is the value of the current i1 (in Amps)?

What is the value of the output voltage vOUT (in Volts)?

We wish to create a Thevenin equivalent model of the above shown circuit as seen from its Output Port.

What is the value of the Thevenin equivalent voltage as seen from the Output Port (in Volts)?

What is the value of the Thevenin equivalent resistance (in Ohms) as seen from the Output Port?

Answer 8

I'll try solving most of it myself and on request post my answers. If anyone is up to joining me,you're welcome to do so and thanks in advance :)

Answer 9

every one post the answers you get here ill be adding sum when im done iswell

Answer 10

ok

Answer 11

pls check this if it is correct
1)va=2.84v
2)vb=0.68v

Answer 12

HEy @jayapavan
what are the other values u got????

Answer 13

solved the first question complete

Answer 14

the values for everyone will be different so give the final answer in terms of different parameters
and then just substitute the values

Answer 15

@saadixyz formulas plzz

Answer 16

midterm2
What is the low noise margin (in Volts)? VIL-VOL=0.5
What is the high noise margin (in Volts)? VOH-VIH=0.5
What is the width of the forbidden region (in Volts)? VIH-VIL=2.5

Answer 17

@lucky12345 , The midterm 2 question absolutely same as the question that was given in Homework 3 named as "H3P1: A Logic Family "

Answer 18

ya but there are some additional parts
give answers to question in the i hav given
it will be much simpler for everyone to understand

Answer 19

used a program...

Answer 20

@saadixyz , which program ?

Answer 21

mid term 2
Vout=Vs*RON/(RON+RPULLUP).
Vout is lower than VOL

rpull= 4*r0n for inverter , nor
rpull= 4*r0n for nand

Answer 22

@saadixyz which program you used

Answer 23

@lucky12345 , Bro , midterm 2 is same as homework question.

Answer 24

midterm 1
answers??
plz give the formula of the answer

Answer 25

helloooo??

Answer 26

yes

Answer 27

q2 last 6 six questions answers plz

Answer 28

@saadixyz : wat r d ans for last 3 que of MIDTERM 1?????
or formula?????

Answer 29

q1:r1=50,r2=50,r3=100,v1=4,i1=0.0001,i2=0.001
answers
2.9775
1.955
0.0209
0.0211
0.038
0.078
0.000195
-0.00195

Answer 30

my values for question one are this any help The elements in this circuit have the following values: R1=1000Ω, R2=400Ω, R3=600Ω, V1=6V, I1=2A and I2=2A

Answer 31

@hejå: dan dis ans ll not work 4 u.......

Answer 32

q2:vs=5,voh=4.5,vih=4,vil=1.5,vol=1
0.5
0.5
2.5
44000
88000
44000
4.45e-4
2.27e-4
5.05e-4

Answer 33

@rvamsi: can u tell me how did u get ans of last 3 que of Q1???????

Answer 34

@rvamsi Vt=? Ron=?

Answer 35

q3: 1) 2

Answer 36

q3:
1.) i=8,vo=2
2.) i=-3,vo=-1
3.)&4.) i=3
1
2

Answer 37

@rvamsi : tell me d formulas

Answer 38

good work but @rvamsi tell me the formulae 4 all u r answers

Answer 39

@rvamsi , kindly post the formula/expression as the values are different :-/

Answer 40

@machu , Thanks ! But kindly post the formulas as the values are different. If you will post the formula, everyone will be able to solve it

Answer 41

@machu plz help r1=r2=100,r2=200,i1=0.01,i2 0.001

Answer 42

@chanakya2346 : 2.84 , 1.64 , 0.023 , 0.023 , 0.004624
last 3 still remain unsolved

Answer 43

ty akash97

Answer 44

@akash97 do u know the formulae for the last 3 question of mid 1

Answer 45

q3:
replace the zener diode with a resistor and find voltage across it

Answer 46

@rvamsi : tell me da formulas for MIDTERM Q1 nly

Answer 47

plz post the aswers in terms of formula
not the final answer in terms of values

Answer 48

@akash97 the ans u have told was wrng

Answer 49

@chanakya2346 : wch 1???????/ Ma ans r marked r8........

Answer 50

@rvamsi
question 2 plz

Answer 51

Suppose that the threshold voltage for the MOSFET is VT=2.0V and RON=10000.0Ω.

What is the minimum value of the pullup resistor RPuI (in Ohms) for which this inverter can obey the required static discipline?

Answer 52

@akash my values are r1=r2=100,r3=200,i1=0.01,i2 0.001.....wat's u r's

Answer 53

0.0015, 2 -2

Answer 54

@chanakya2346 : sorry .ma values r r1=r2=200 & r3=100

Answer 55

@akash97 if you know the formulae plz tell me

Answer 56

multisim program

Answer 57

Please , tell the formulas ....

Answer 58

dude tell me the values i'll tell the answer

Answer 59

and tell me the formulae for question 2

Answer 60

@saadixyz , yaar see ! if you will post only the answers not everyone will able to solve it so therefore kindly post the formula so that everyone can solve it :)

Answer 61

@chanakya2346 : power in R1= (vs - va)^2 / r1.........
: power in R2= ( va- vb)^2 / r2
......

Answer 62

@saadixyz r1=r2=100,r3=200,i1=0.01,i2= 0.001

Answer 63

@saadixyz , The midterm 2 question absolutely same as the question that was given in Homework 3 named as "H3P1: A Logic Family " .

Answer 64

@saadixyz : r1=r2=200 & r3=100 I1= 0.001 i2 = 0.005
tell me d formulas for last 3 que of MIDTERM 1

Answer 65

@akash97 , this is what I am continuously saying that someone should post the formulas :-/

Answer 66

@chaand.i : i DID IT MAN nw

Answer 67

@chaand.i the values are changed

Answer 68

@saadixyz , yeah ... but the way of solving is same as it was in homework 3 !

Answer 69

@akash97 , congrats dude :) ... what are the formulas you used in all the parts of QUESTION 1 ?

Answer 70

@chaand.i can u refer me somewhere

Answer 71

can someone put the final answer of question 1 (formula)
akash97

Answer 72

@saadixyz , okay give me a moment ! I'll try to post the formulas

Answer 73

@chaand.i : I post 2 formulas for que 4 5 ...
que 6 is easy
bt I dont know formulas for que 7 8 9.DO u know
?

Answer 74

@chaand.i thanx

Answer 75

@akash97 , No I am stucked in question 1 as well :/

Answer 76

@chaand.i : use CIRCUIT SANDBOX & use DC analysis to get ans.
Everytime pen doent work.
Sometimes CPU works better.: ) I have send u a msj.reply it fast

Answer 77

@akash97 tell me your question????

Answer 78

@akash97 , okay thanks ! Let me find the software and then i ll let you know

Answer 79

Suppose that the threshold voltage for the MOSFET is VT=2.0V and RON=10000.0Ω.

What is the minimum value of the pullup resistor RPuI (in Ohms) for which this inverter can obey the required static discipline?

Answer 80

ron =6000

Answer 81

@saadixyz : r1=r2=100,r3=200,i1=0.001,i2= 0.005.dan
1) What is the power (in Watts) coming out of the voltage source \(V_1\)?
2)What is the power (in Watts) coming out of the current source \(I_1\)?
3)What is the power (in Watts) coming out of the current source \(I_2\)?

Answer 82

what is v

Answer 83

????

Answer 84

v=5 volt

Answer 85

1)0.054

Answer 86

2)0.00068

Answer 87

befor posting the answer plz write the question and then the answer

Answer 88

3)0.0034

Answer 89

these are in order of as asked

Answer 90

1 & 3rd r marked awrng @saadixyz

Answer 91

@akash97 what?? i dont understand

Answer 92

change sign

Answer 93

let me check