Hi All
Some homework questions that I need help with are:
Q1.
The attached pic shows a "constant current source". The question is: Whats the emitter current in the circuit?
Note: The transistor is silicon.
My attempt:
I = 5.6v / 5000 = 1 mA
Questions:
Is this correct If so, why? I ignored the 1K resistor, Vin and RL. So why are they ignored? If not then, help!
Also, how does knowing the transistor is silicon help determine the emitter current
Q2.
The output stages of operational amplifiers are often:
1. Differential amplifiers
2. a-c amplifiers
3. Darlington amplifiers
4. Complimentary amplifiers
My attempt:
I know it isnt 1 because differential amplifiers are usually input to op amps.
My guess is 4 but I have no idea really
Q3.
In the second pic, the question is: What is the purpose of C3?
Options given:
1. It passes a-c and blocks d-c, this biasing the emitter Q2.
2. It passes a-c and blocks d-c, the keeping the emitter Q2 at a-c ground.
My attempt.
I guess 2. But I am not sure why?
Some homework questions that I need help with are:
Q1.
The attached pic shows a "constant current source". The question is: Whats the emitter current in the circuit?
Note: The transistor is silicon.
My attempt:
I = 5.6v / 5000 = 1 mA
Questions:
Is this correct If so, why? I ignored the 1K resistor, Vin and RL. So why are they ignored? If not then, help!
Also, how does knowing the transistor is silicon help determine the emitter current
Q2.
The output stages of operational amplifiers are often:
1. Differential amplifiers
2. a-c amplifiers
3. Darlington amplifiers
4. Complimentary amplifiers
My attempt:
I know it isnt 1 because differential amplifiers are usually input to op amps.
My guess is 4 but I have no idea really
Q3.
In the second pic, the question is: What is the purpose of C3?
Options given:
1. It passes a-c and blocks d-c, this biasing the emitter Q2.
2. It passes a-c and blocks d-c, the keeping the emitter Q2 at a-c ground.
My attempt.
I guess 2. But I am not sure why?
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