I am a second year mechanical engineering student. I am repeating an exam in Electronic Circuits. I have the exam on Thursday and am working through the old exam paper. I am having a few problems. I would really appreciate some help.
1) op am question-find v1 and v2
Attempt:
If the the voltage across the two inputs must equal 0. The V+ is 2v, the src beside it. Then must V- be also 2v. V1 already must equal 5v, so therefore for V- to be 2v then v2 must be 3v? If this correct? Looking back at this i don't think it is correct as we are talking about voltage, and it has to be across 2 points.
However if each input currents has to equal 0. Then i- must equal 0. The voltage V1 is equal to 5v, therefore i1 must equal .2amp, then i2 must equal .2 as well? Giving a V2 of 1?
2)Norton equivalent question
Attempt:
To get a Norton equivalent i must short the terminals and see what current goes through them. How do I calculate this current? Is it 7amps? What affect does the 1ohm resistor have?
3) Max Power Question
How do i find the Thevin equivalent resistance? Isn't it the resistance in the circuit "looking back" from the terminals and shorting the voltage src? Then is 177.77ohm correct?
4) current to voltage amp question
Attempt:
if i1 is 2mA. Then 5(i1)=.01, therefore using voltage division Vo is equal to .005 volts? I thought this was an amplifier?
1) op am question-find v1 and v2
Attempt:
If the the voltage across the two inputs must equal 0. The V+ is 2v, the src beside it. Then must V- be also 2v. V1 already must equal 5v, so therefore for V- to be 2v then v2 must be 3v? If this correct? Looking back at this i don't think it is correct as we are talking about voltage, and it has to be across 2 points.
However if each input currents has to equal 0. Then i- must equal 0. The voltage V1 is equal to 5v, therefore i1 must equal .2amp, then i2 must equal .2 as well? Giving a V2 of 1?
2)Norton equivalent question
Attempt:
To get a Norton equivalent i must short the terminals and see what current goes through them. How do I calculate this current? Is it 7amps? What affect does the 1ohm resistor have?
3) Max Power Question
How do i find the Thevin equivalent resistance? Isn't it the resistance in the circuit "looking back" from the terminals and shorting the voltage src? Then is 177.77ohm correct?
4) current to voltage amp question
Attempt:
if i1 is 2mA. Then 5(i1)=.01, therefore using voltage division Vo is equal to .005 volts? I thought this was an amplifier?
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