Questions tagged [analysis]
Questions attempting to analyze the mathematical properties of a formula, the inner workings of a protocol, or the design of a given circuit.
313 questions
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How to assign proper polarities to resistors in basic circuits?
I'm a non-EE engineering major and am just taking a circuit/signal/system class. Just this week our professor told us about the passive sign convention and gave us some examples, but some things just ...
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What is the point of this capacitor in this op-amp circuit?
I was simulating this op-amp circuit I found and was wondering what the point of the 1 uF (C2) capacitor is in this circuit. When it is present, the gain from ~10kHz to 100kHz is around 6 dB. When I ...
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Diagnosing why XL4015 buck converter failed
I was using this buck converter to charge a 3S Li-ion battery from a 16 VDC source.
Voltage was set to 12.6 V and current was set to 3 A. I have used this to successfully charge the battery a couple ...
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Circuit analysis question [closed]
Can the following circuit be solved for the voltage over VR and the current through R3 with no further information?
Update: is the problem solvable using only KCL, KVL, MESH, NODE and/or other basic ...
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Nodal Analysis: Correct/Standard Method?
Nodal analysis is mostly quite straightforward and most people that explain/teach it do a lot of things similarly, except for this one thing that seems pretty important: assuming the direction of ...
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Improved Howland pump circuit analysis
I want to use a Howland current pump as a constant current source/sink into a capacitor. I have a capacitor of 50pF and I want to achieve a slew rate of around 1V/ns to 10V/ns.
For R5 = 50ohms -> I ...
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LISN circuit voltage calculation
Attached is the LISN circuit. I want to calculate the V1, but I don't know how.
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LISN for the buck converter EMI measurement
I am new to LISN design for the EMI measurement. I use the LISN circuit in my LTspice simulation, as seen in the figure.
I have a question: Even when I remove the buck converter to check the noise ...
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New to electronics. Need help to understand this current limiting/protection circuit for Solenoid Valves [closed]
I found this circuit in one of the automotive projects I came across. I'm trying to implement something similar in my project. It seems to be a current limiting/protection circuit for Solenoid Valves. ...
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Am I correctly solving this circuit with Ebers-Moll?
Given the following assumptions,
\$I_{SAT}=10^{-15}\$
\$ \beta _F=250\$
\$ \beta _R=15\$
have I followed a good process for performing a level 1 Ebers-Moll injection model of this simple transistor ...
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How to do qualitative analysis about the phase shift contributed by capacitor and inductor?
AFAIK, this is a RF transmit circuit, I have seen some explanation in the other similary question:SAW resonator oscillator operating principle in which the accepted answer says:
C1, C3 and the SAW ...
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Circuit sanity check: adding 3V LED to 18V Drill Battery
I want to add a 3V LED to my Makita DF457D cordless drill because it lacks illumination for the work area, unlike the newer, more expensive models. The drill uses an 18V battery, so I've chosen an MH-...
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Analysis of oscillator circuit
I have encountered the following circuit, and wanted to analyze it's behavior:
The inverters are supplied with Vcc and GND.
I think it's supposed to be a decaying ring oscillator, but have no idea ...
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How do I use the given voltage drop across \$R_3\$
I can't figure out how to solve this circuit if I use mesh I get these 3 equations what is the fourth equation?
$$
24E3*i_1 - 12E3*(i_2+i_3) = 24-v_{52} \\
-12E3*i_1 + 25E3*i_2 - 10E3*...
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Calculating the poles of a Circuit
I have been reading Behzad Rahzavi's Analog Design book to prepare for interviews and have come across a discussion on calculating poles that confuses me.
In the following example 6.15 the book ...
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