# 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.

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### Emulate impedance response using RLC components

I need to emulate measured impedance response of some blackbox using only RLC components. Measurements: ...
51 views

### Question about RLC circuit and struck in a problem, in the calculation getting current as infinity for the given values

Question about RLC circuit and struck in a problem, attached the photo related in the calculation getting current as infinity for the given values.any idea how to move forward
51 views

### Why is the Hybrid-PI model like that?

The BJT and MOSFET can be modeled using the Hybrid-pi model. I only know that the transistor can be modeled with linear elements like that, but I don't know why. There are a lot of things that confuse ...
38 views

### Negative Freqs from FFT in Laplace Circuit Analysis

Do I use the absolute-value of the FFT frequencies when using the Laplace equations for calculating the impedance of an RLC circuit? I'm currently working on something where I need to numerically ...
38 views

### Underdamped RLC with CCCS, calculating capacitor voltage

Referring to "Electrical Circuits" Nilsson/Riedel 10th Edition. I have a classic underdamped RLC circuit with a CCCS (Current Controlled Current Source) with a current multiplication factor ...
52 views

### Colpitts Oscillator Issue

how are you all doing? I have been experimenting with the Colpitts Oscillator and encountered a minor issue that I would like to resolve. Here are the two circuits - the first one is working ...
42 views

### How can you calculate the transfer function of any parallel circuits?

I have now seen a few cases where RC in parallel are used as a Filter or just the famous LC filter. But I am asking my self. How do you calculate the transfer function? Now Kirchhoffs voltage law ...
71 views

### Simple LC circuit implementation

I'm implementing a very simple LC circuit where the power supply is connected to an inductor (of 4 micro Henry specifically), and the inductor is connected through a diode to a capacitor going to ...
28 views

### Initial conditions for this LC-Circuit

I have an upcoming exam in a few days so I'm going trough some problems I found online or in textbooks and just try to solve them. I have one here where I'm not entirely sure about the initial ...
27 views

### Second Order Circuit $\omega_0$, $\omega_d$ and $\alpha$ naming

In 2nd Order Circuits I usually solve them with solving differential equtaions by checking jumps. But today my teacher solved a question by using $\omega_0$, $\omega_d$ and $\alpha$. I think ...
36 views

### Second Order Op Amp RLC Circuit

Is there a way to make an op amp circuit using only RLC and op amps that would make V0 = V1-4V'1 -3V''1 -5V2 possible? Assuming that V1 and V2 are independent sources and considering that the prime ...
26 views

### Phase relationships in AC circuits

Is it wrong to use the mnemonics "ELI the ICE" [ From my understand means if its inductive current LAGS voltage and if its capacitive current LEADS] in understanding the phase relationship of a ...
17 views

### High-Pass Filter Setup

In several designs I've come across the following setup. Design -> RC Network (High Pass) -> Oscilloscope Input: Where SK2 is the SMA connector from the PCB that goes into an oscilloscope. Some ...