Questions tagged [circuit-theory]
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128 questions
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What makes an element resistive / capacitive / inductive / memristive in a strict circuit-theoretical sense?
I am struggling to understand how the terms resistive, capacitive, inductive and memristive are rigorously defined in circuit theory.
In the most general case, every one-port is uniquely characterized ...
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Network theorem origin
While finding the Norton's equivalent circuit, we:
Find the short circuit current through the load
Find the resistance between the two points across which load is connected shorting the voltage ...
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RC filter for a fast delayed ramp
Consider simple RC networks with 3 external terminals (GND, IN, and OUT) and, at most, 4 total components.
To be clear, each component is either a resistor or a capacitor.
For a 1V voltage step on IN, ...
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Computing input resistance of two common-base configurations
When computing the input resistance of this common base configuration, the collector current \$I_C\$ is approximated as equal to the emitter current \$I_E\$:
simulate this circuit – Schematic ...
CommunityBot
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Source Transformation AC
I did this problem for 7th times now. I did find this question in the book (Alexander Sadiku Fundamental of Electronics), but it's a Pspice problem to find V1 and V2 in each node. This one is source ...
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Initial Condition in Series RLC Circuit
I have the following RCL circuit
simulate this circuit – Schematic created using CircuitLab
After using the Laplace transform my lecture notes mention that we get the following circuit
simulate ...
CommunityBot
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Complex Power Conservation or "Boucherot's Theorem" - a proof without Nodal Analysis
Brief Question
I'm trying to figure out a proof for the Complex Power Conservation Theorem, which does not use Nodal Analysis.
Theory I know
In my university this theorem has ben taught with the name &...
CommunityBot
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IV curve arithmetic - reference request
When playing around with electrical concepts in my head, I realized that the IV characteristic of any combination of elements, in series or in parallel, can be computed by simply adding the IV curves ...
CommunityBot
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Resistive network with two voltage sources
Update: (I updated the description/Question for clarity)
I am currently stuck trying to solve a seemingly simple resistive network. The voltages U1 and U2, aswell as Rr are known. The unknown ...
CommunityBot
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Equivalent impedance seen into drain
I can't understand or simplify the Zx in the picture
is equal to that of
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How basic wireless electricity transmission circuit works?
In the circuit below because of the DC voltage source there will be no flux change on steady state of the circuit so how the LED still stays turned on if magnetic flux is not changing and no ...
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Can we solve all linear circuits using only KVL and constitutive relations?
Can We Solve for Node Voltages and Branch Currents in Any Linear Circuit Using Only KVL and Constitutive Relations?
In circuits with a single loop, it's trivial to solve using only Kirchhoff's Voltage ...
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Does KVL guarantee identical voltages/currents in similar circuits?
I have a question that is a bit abstract. Assuming I have two proper linear circuits, A and B, which have:
The same ideal components (for example, voltage source, inductor, capacitor, resistor)
The ...
- 188k
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Power dissipation in an IC
Here is LM741 op amp circuit in Figure 1. The amplifier has two power supplies \$V_{cc}\$ and -\$V_{ee}\$. The up arrows are connected to the positive power supply \$V_{cc}\$ which is +15 V. Current ...
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Transient circuit analysis with additional source
The circuit in the image below is what I get when I open the switch of a larger circuit which I have already analysed. Therefore, I know the initial condition.
simulate this circuit – Schematic ...
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