Use this tag for circuits that only contain passive components, such as resistors, capacitors, and inductors.
-1
votes
0answers
23 views
LC Dual Mode Resonator Modelling [closed]
I am trying to model an ADS circuit of my Dual Mode Resonator with two LC resonators and Inductively coupled Input output ports in MATLAB. I want to model this circuit and this response in MATLAB:
...
0
votes
1answer
128 views
Circuit RL simumation explanation
I was playing around with a circuit, and I am not understanding its behaviour, it appears to be wrong.
I am using this circuit.
If you close the switch, the current will flow through the inductor, ...
0
votes
2answers
210 views
poles and zeroes
In network theory, there is a theorem which states that all the network functions in S domain can be expressed as the ratio of two polynomials A(S)/B(S). The books define the poles to be the roots of ...
3
votes
3answers
934 views
Behavior of RLC circuit elements at t = 0
I'm wondering what are the behaviors of the inductor, L, and capacitor, C, at t = 0+
Please correct my understanding of the above circuit if I am wrong.
At t = 0, the capacitor acts like a wire. ...
1
vote
1answer
135 views
First Order RL Circuit
In figure 8.21 $$ R_1 = 50 , R_2 = 200 , L = 2 H$$
Voltage is given by $$ V_{in}(t) = V_{s1}u(-t) + V_{s2}u(t) $$ where $$V_{S1} = -10 V , V_{S2} = 20 V$$
a) Find $$ I_L(0^+) $$ and $$ I_L(t)$$ ...
0
votes
0answers
106 views
Y-parameters again
The Y-Parameter model uses the output current and the input voltage as the independent variables and expresses the other two in terms of these variables. But can anyone tell me why exactly do we need ...
2
votes
2answers
119 views
capacitive filter design
I have a question about output capacitor filters.
So I know that a simple capacitor filter would have a single pole response, and this is just a first order filter. Let's say that the value of the ...
3
votes
2answers
192 views
Why do R and C have to be small for differentiator circuit
I'm a beginner studying The Art of Electronics, and on page 25 they introduce the differentiator. Basic circuit like so:
They give the complete equation:
$$
I = C \frac{d}{dt}(V_{in} - V) = ...
-5
votes
1answer
72 views
R L CIRCUIT DESIGN [closed]
IN inductor current lag voltage by 90 if resistance and inductor is series .if laging current goes to resistor what happen .please explain about current from inductor to resistor
1
vote
2answers
206 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 ...
5
votes
3answers
2k views
RC differentiator circuit explaination
This is the circuit of a basic RC differentiator, with the input/output voltage waveforms.
First of all, I don't understand why there is decrease in the output voltage (discharging of charge from ...
6
votes
1answer
525 views
Understanding USB Inrush Current Requirements
In relation to a previous question, I'm trying to understand the USB 2.0 requirements for inrush current. I understand the basic idea, but a few details are still unclear to me. The specification ...
4
votes
1answer
522 views
Thevenin equivalent circuit with current and voltage source
I have the circuit below and I have to calculate complex current i1using thevenin equivalent circuit method:
I tried to follow the rules and open the terminal ...
4
votes
2answers
274 views
Change capacitance or resistance in RC circuit
When tuning an RC circuit you can choose either to tweak the resistance or the capacitance. I was wondering if there are any benefits for choosing one over the other depending on what you are trying ...
4
votes
4answers
556 views
Intuitive explanation for filters
Can anyone provide an intuitive explanation for the filtering action of RC or LC circuits? I know the mathematical treatment involving reactances but I was wondering if that could be explained ...
2
votes
2answers
189 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 ...
1
vote
3answers
1k 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 ...
3
votes
2answers
162 views
Why does my transistor circuit produce a wave?
Could some one explain to me how my circuit works? I accidentally hooked this up while trying to work out an amplifier. I'm thinking there's something like RC resonance going on, but I'm not sure. ...
3
votes
1answer
231 views
Hall effect sensor output type - open collector vs RC
I am about to select a hall effect sensor. Two types are available: one has an open collector (OC) output, the other an RC output. The datasheet states that both are current sinking. But because I ...
5
votes
5answers
1k views
Circuit to remove noise from digital communication line
Carrying on further from my previous post and drilling down to specifics, I am trying to figure out the right way to implement "glitch remover", or "noise remover", using electronics (i.e. not in ...
5
votes
3answers
1k views
Calculate the value of an inductor using an RL or LC circuit
Given an inductor of an unknown (though magnitude-estimatable) value, and a resistor of precisely known resistance, how can one calculate the inductance of the inductor?
Tools I have at my disposal:
...
1
vote
1answer
240 views
Why use a resistor when blocking DC?
This may be a silly question, but I was wondering about the resistor involvement of a DC blocking network employed at frequencies 5MHz to 2400MHz.
Most of the designs I have seen are an RC ...
1
vote
2answers
392 views
How to add an RC filter between a header pin and a ribbon cable
I'm a software engineer diving head-first into the world of embedded systems design and development. This question is basically about "plumbing" -- what's the best way to physically wire up a ...
2
votes
1answer
658 views
PIC 16F84A RC oscillator problems
I'm trying to use an RC oscillator on a PIC 16F84A-20 that I have on a breadboard. The code is supposed to (at this point) simply flip an output back and forth every so often.
I don't need it to run ...
7
votes
5answers
983 views
RC circuit understandings
I am trying to understand the principles of a RC charging / discharging circuit however I'm at loss regarding certain aspects of its operation.
I have a square wave generator giving 0v to 5V levels ...
