# 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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### How to use input/output termination resistors in filters?

NOTICE: I have added another question here that a solution for each one may help for solving the other one. Please look at Fig-1 below. It is a common usage of termination resistors. R1 , R2 work ...
2answers
592 views

### Capacitors and filtering

I noticed that in many audio op-amps, RC constant is designed so that the cutoff frequency is about 16 Hz. I think that's because the human ear responses to frequencies higher than 22 Hz. But I am a ...
1answer
94 views

### A problem regarding connecting the grounds within two seperate circuits

Figure 1 I am trying to design the above circuit for my project to create zero crossing detector as shown in the above figure. This configuration was proposed originally by the member named "...
2answers
930 views

### Hybrid two port network models

Hybrid two port network modelling, as described by the texts, is a topic which enables one to reduce a complicated network into a simple two port network. I guess this is something which must have ...
3answers
7k views

### Finding Resonant Frequency in LC circuit using oscilloscope data

I designed a RLC circuit. I chose L and C such that resonant frequency become 2KHz. L=100mH, C=0.25*10^-6F and I took R to be 100 ohms. Then I generated Bode plot for range 100Hz to 10KHz. Ideally I ...
2answers
434 views

### Passive low-pass filtering question for a transducer output

I'm having ringing-noise from a pressure transducer analog output. Here is the only information about the instrument: http://www.trescal.be/pdf/PPC500_GB_SI.pdf Let me briefly explain the device and ...
1answer
455 views

### Resonance factor of RLC circuit

Say we have a RLC circuit, connected to a source. Say, regarding to the positive side of the source, we have in order, an inductor L, followed by a resistance R and a capacitor C in parallel. So we ...
2answers
242 views

### Settling time for an LR circuit with an AC sine source

How can we mathematically relate the settling time for an LR circuit with an AC sine source? By settling time I mean the time taken for the circuit reaching to steady state from transient state. This ...
2answers
201 views

### How is it possible that an LC Oscillator create a sine wave?

I have a question, for example look at this circuit: 1)How is it possible if this circuit can oscillate, for example taking on the capacitor full charged, and the inductor full discharged, the ...
1answer
264 views

### Finding state equations for an RL circuit with inductors in T configuration?

I'm working on an exercise which asks to "Identify state variables and write apropriate state equations" for the following circuit. simulate this circuit – Schematic created using CircuitLab ...
2answers
662 views

### Pure inductor as load in inverter

In the following inverter a pure inductive load is applied, then from where the starting current will start? (from 0 or -I(peak)). I want to draw the waveform of current through the inductor and find ...