Questions tagged [circuit-analysis]
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.
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Help understanding amplitude modulation circuit
I’m fairly new to electronics / electrical engineering, and I’ve been reading about amplitude modulation because I find it really intriguing.
I found the following AM modulator circuit in this answer ...
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How to add AC waveforms when the frequency is not the same?
I'm trying to add these two waveforms using phasors. I'm wondering how to handle the 100ωt part which is different in the second equation.
V1 = 250 sin(100πt)V
V2 = 169 sin(80πt − π/2)V
Any help ...
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The effect of the output resistance on the cut-off frequency of a passive low-pass filter. What is the formula for the cut-off frequency with load? [closed]
Heyo,
I've managed to derive this formula for a cut-off frequency of a passive low-pass filter, but sadly I haven't been able to find any source on the internet which talks about it, so that I could ...
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Solving for power using MNA
I hope you are doing well. I am struggling to solve this modified nodal analysis question (MNA), but I think I am close. I have determined the 6 unknowns and the 6 equations needed to solve for all of ...
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Inductor Back EMF, Ideal Switch
Perhaps I am missing an important detail:
Assuming all components are ideal (no resistances present), would current ever flow through L1 with SW closed?
If: V(back emf)=L1 (di/dt)
When SW closes ...
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Does this BJT transistor pair have a name? Perhaps "inverted Darlington"?
I could not find another question exactly like this. What do we call the Q3/Q2 pair? It works like a Darlington, except in a Darlington both transistors have the same gender. So going from the base ...
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Synthesis of driving point impedance of a circuit
The following pole-zero plot is for the transfer function of driving point impedance (input impedance) of a circuit.
The actual problem statement from a book is:
Synthesize a driving point impedance ...
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How to use the LTspice OTA element?
How to use the LTspice OTA element?
In fact I am trying to make a multiplier, but an answer to a question about that problem
[https://electronics.stackexchange.com/a/499607/364777]
explains that the ...
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LTspice full-bridge simulation fails after switching event
I’m simulating a high-voltage MOSFET full bridge in LTspice 24.1.5 (Windows) using IRS21867S gate driver models and discrete NMOS devices.
A half-bridge version of the circuit simulates correctly, but ...
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Tuya (Deltaco) smart WiFi switch: SMD part “C4” knocked off near KP3210 power supply — confirm it’s a capacitor + value/package?
I’m troubleshooting a Deltaco smart WiFi switch that became non-functional after I opened the unit to adapt it for a different application. I suspect I accidentally knocked off an SMD component from ...
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ASIC Miner Circuit Analysis
I'm currently just making an ASIC miner for fun in the combine of my own room to build up my portfolio a bit before I begin my EEN studies. I've been designing this on-and-off for about 2 years now, ...
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Circuit Analysis Exercise Help (KVL, KCL)
I have a question about a circuit analysis exercise I had in an exam. I think that my solution is fine, but they gave me only 9 points of 20. Skipping (a) question whose answer is 0.398 Ω, can you ...
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Can one add simulator input code to a question? [migrated]
From the answers to [meta.stackexchange questions 4637]
I understand that StackExchange does not have (and does not want) the possibility to upload files. But I can imagine that in discussions about ...
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What's the feedback factor of this circuit?
I'm given that
\$FAol>>1\$
gains ratio (ol/cl)=100 times
\$Aol=10000\$
I know that when \$F_{AOL}>>1\$
then
$$A_{CL}=\frac{A_{OL}}{FA_{OL}}=\frac{1}{F};A_{CL}=\frac{1}{F}$$
But \$F=\frac{...
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Why is the "Virtual Short" (V_+ = V_-) assumption invalid when Op-Amp inputs are swapped?
I am currently studying operational amplifier circuits and I am confused about the relationship between the mathematical derivation and physical stability. Let's consider a standard inverting ...
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