Questions tagged [passive-networks]
Use this tag for circuits that only contain passive components, such as resistors, capacitors, and inductors. This includes RC, RL, LC, and RLC circuits.
833 questions
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How do I estimate the max current of a series RLC circuit during transients?
I have a series RLC circuit with an applied voltage of
$$
v(t) =
\begin{cases}
V_{DC}+V_{AC}sin(\omega_s t), & t\ge0 \\
0, & t<0
\end{cases}
$$
I want to know what the worst case current ...
- 3,594
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Solving a series RLC DC step response circuit
I got two different answers to this RLC problem when using a method shown in class. What am I doing wrong?
Edit: I graphed each answer. I'm assuming the answer for Vc on the right is correct, as the ...
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Why is mass mapped to inductance in the Mass–Spring–Damper ↔ RLC analogy?
In the Mass–Spring–Damper ↔ RLC Circuit analogies, mass is mapped with inductance.
F=mdv/dt, V=LdI/dt
From a cause–effect point of view, I find this confusing:
In mechanics, a force causes ...
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Order of series RLC components - same circuit, different values
I'm learning about series RLC and I want to ask a question/confirm my theory on what's happening in the circuit.
I want to ask about the order in the RLC, the only difference between the circuits are ...
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Passive Butterworth filter synthesis with Cauer topology
I've been trying to wrap my head around the synthesis techniques for passive reactive filters. I've been able to understand the Cauer synthesis technique for one-port networks. The book I'm reading (...
- 188k
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Obscure method of supression of transient voltage spike in CLC-circuit
Surfing through the library of everycircuit.com I've run into this example of voltage spike supression in CLC-circuit with a diode. On the screenshot below the green curve is almost perfect comparing ...
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Is there any practical reason for the ordering of component values in an LC ladder filter?
Recently, I've been exploring the driving-point impedance procedure for the derivation of double-terminated LC ladder lowpass filters. The driving-point impedance \$\text{Z}_{11}\$ for a doubly-...
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Why does the passive sign convention work?
Why does the passive sign convention even work? I'm trying to understand that why is that when we assume the voltage polarity randomly for a R at the start and then assume a positive current entering ...
- 62.8k
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LC tank resonance in LTSPICE
I am simulating a lossless LC tank driven by an AC source in LTSpice. The source frequency is the same as the tank's resonant frequency. I expect to see the inductor current and capacitor voltage grow ...
- 5,450
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Find v(s) in the circuit below(voltage through the capacitor)
Capacitor initial conditions = 10v, inductor = 2A. Input is the current font.Find voltage through the capacitor
I think i got it but i have no clue whether its right or not, would like to know what i ...
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Explanation and Draw of Line Impedance Stabilization Network (LISN)
I am trying to learn about LISN circuits. As far as I see, there are standards for LISN. But the point is everybody is applying standards, I would like to know why these values are chosen or why there ...
- 29.3k
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What is this white SMD component on a SIM800L red module (DIY low-cost version)?
SOLVED
(The bottom of the page is where you can find the conclusion.)
THE QUESTION:
Does anyone know what this white component is, and what its role is in the SIM800L module circuit?
Thanks in advance!...
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Real positive functions in passive filter design
I have found the answer as A >= -3 with the help of the Hurwitz condition but the answer sheet says the answer is A<=2/3. Is there something I am missing or having a lack of knowledge?
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How to find the maximum output current?
I have this circuit. At \$t=0\$ the resistor \$R_2\$ becomes a short circuit. I need to find the maximum current produced by the voltage source.
I studied the circuit for \$t<0\$ and then for \$t&...
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Puzzled by voltage readings of a simple resistor network
I have tried in vain to understand why the voltage readings across the resistors in the simple resistor network below are what they are, but I can't work it out. I know that when you place resistors ...
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