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 ...
- 125
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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 (...
- 51
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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 ...
- 249
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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 ...
- 11
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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 ...
- 39
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2
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241
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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 ...
2
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2
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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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271
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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 ...
- 181
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5
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271
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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&...
- 13
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Deviation of length of antenna from best effieciency
Suppose I have a antenna and the wavelength of the wave which gets transmitted is 0.5m.The optimal length of the antenna for transmission is 0.5/2 = 0.25m.Suppose now that I buy wire from my local ...
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How does this circuit generate a 180 degree phase shift?
I came across this circuit diagram (attached) with LC components.
It is supposed to produce a 180-degree phase shift. How does this arrangement of these inductors and capacitors achieve that? What is ...
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How does an antenna influence the resonance of a receiver RLC circuit?
I am considering building a remote control device (I haven't decided what to control yet).
My circuit is very simple:
simulate this circuit – Schematic created using CircuitLab
When I close the ...
3
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3
answers
449
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Why does my resistance in the LC tank circuit appear different?
I created a parallel LC tank circuit in LTspice. I want to use the input impedance of the node "A" in the diagram below. For this purpose, I drew the V(a)/I(R3) cross-section, and the ...
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4
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How to analyze the behavior a LC tank based active clock buffer/clock doubler circuit?
I've been studying the reference clock buffer circuit of an HP 5370A time interval counter. It takes in either a 5 MHz or a 10 MHz and always outputs 10 MHz.
Here is the schematic:
There are 3 LC ...
- 312
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Why isn't inductor current remaining same in the following circuit at time t=0?
I am trying to understand inductor behaviour, specifically boosting action provided by them by means of the following circuit.
Initially switch SW2 is closed and SW1 is open.
I expect inductor ...
