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Results tagged with circuit-analysis
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user 248832
Circuit (Network) analysis is the process of finding the voltages across, and the currents through, every component in the network. Consider using in conjunction with tags for the particular analysis technique(s) in question: "nodal-analysis", "mesh-analysis", "superposition", etc.
0
votes
1
answer
192
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Computing the gain on a small signal model
[The small signal circuit]
(https://i.sstatic.net/uoZpQ.jpg)
I want to find the gain on the first transistor so i wrote the small signal model in the second pic.It is said to consider D1 open.
Ca …
- 803
0
votes
4
answers
841
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Input and output impedance of a circuit with a BJT
[The small signal circuit]
Hey, so in this circuit i already figured out the input and output impedance without R1, easy stuff... But now i want to know them with R1 included.
For the input i wan …
- 803
0
votes
1
answer
50
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Trying to compute the power that the operational amplifier provides to a load
So here's the circuit
What is the power that the amplifier would need provide to the load (RL) if i inject a input signal (vin) in the form of a sine with 1kHz frequency and 1mV amplitude?
I know …
- 803
1
vote
3
answers
80
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Choose the dimensions of the resistantors in this op-amp circuit with negative feedback to h...
Here's the circuit:
Here's my attempt:
I already have the values for Ad. Is this right? I need to choose the values for R1 and R2 wisely I think.
What I don't understand is the point of having …
- 803
1
vote
0
answers
73
views
How to compute the output impedance of this current source that makes part of a OPAMP
Here's the schematic:
i would like to find the output impedance of current source IF1 (seen on that rectangle covering a led, T6 and 2 resistors).
Now, i already have the values of IF1,RF2,RF1, Q- …
- 803
2
votes
0
answers
53
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Computing the maximum power that this opamp provides to the load Rl without occurring distor...
Here's the schematic:
So first stage is a differential amplifier where vo1 =3.72V in DC (Vin= 0). In this stage i can say AmplVo1 = gainStage1 * AmplVi where distortion only happens when vo1 is big …
- 803
1
vote
1
answer
151
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Trying to implement an exponential averaging circuit
With basis in this:
If i wanted an exponential averaging circuit with time constant t = 35ms i would just use this equation : t = RC where i can choose one value for R and compute C.
What i dont unde …
- 803
1
vote
0
answers
67
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Trying to implement an averaging circuit
Based in one of the answers given to me
I made the input signal be a sine with a 1V offset and 1 V amplitude.
If I were to apply the equation given from the user that answered what would the interval …
- 803
0
votes
1
answer
179
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Half wave rectifier connected to a npn transistor - how to compute its output
Above is the circuit i need to analyse. I already have the gain and Q-point of the first transistor, now i will have a half wave rectifier consisting of elements D1, C3 and R5.
Here's the gig, i do …
- 803
3
votes
3
answers
798
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Trying to develop a peak detector circuit
The circuit below has as an input a sound wave that is amplified (the op amp used is an ideal one) that then goes through a peak detector circuit. I intended to implement part of this circuit using br …
- 803