An LC circuit is a resonant circuit combining an inductor (L) and a capacitor (C).
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LC-Circuits and Feedback into power supply
I am a medical researcher and I found an effect that I think I understand half way, but not completely and I hope someone more skilled in electrical engineering can clear this up for me. I am a novice ...
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1answer
69 views
What is the physical meaning of an LC circuit having a negative transfer function?
Say you have an ideal LC circuit:
simulate this circuit – Schematic created using CircuitLab
The transfer function of this circuit is a complex voltage divider: $$ \frac{\frac{1}{sC}}{sL ...
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Working of a Choke Filter?
I was reading up on LC filters, and from what I understand, the inductor limits sudden changes in current, and capacitor allows AC to pass through, thus getting a somewhat constant output voltage. How ...
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233 views
Why would I use a transformer instead of one inductor in a crystal set?
I'm reading up on A Simple Radio Receiver. I have a question about this image:
The signal from the antenna (perhaps a few tens of microvolts, or hundreds for a nearby transmitting station) ...
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1answer
173 views
LC filter sizing 50Hz AC to good DC (RMS to DC)
I'm using a LTC1966 for a RMS to DC converter. My capacitor is a 10 µF. When measuring with an oscilloscope, I have a small ripple which I want to remove.
My result from ADC to the program shows a ...
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3answers
246 views
What does the impedance look like around a small resonant loop?
Say I have a hoop of conductor, broken at the top, with a capacitor across the gap. The inductance of the hoop and the capacitance form a series resonant LC circuit:
Now, say this loop is excited ...
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Coupled LC Resonator in MATLAB
I am designing a dual-mode resonator with the following Circuit Model and Frequency Response!
ADS Circuit Model:
Frequency Response:
I need help with the modelling of my circuit model in ...
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3answers
207 views
Recommendation for ADC noise filtering?
I'm using an ADC (adc081c021) with a pretty noisy input:
There is also a 5-second video here:
http://tinypic.com/player.php?v=2ue47cm&s=5
The objective is to detect the two peaks. How could I ...
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364 views
How do I calculate parameters of LC filter from component values?
I have found this schematics and want to know corner frequency and characteristic impedance of this filter. How do I calculate it?
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How to calculate the resonance frequency of a parallel LC circuit with L having a DC resistance?
Here is the parallel LC circuit with inductor having also r:
How can I calculate the resonance frequency?
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150 views
LC circuit poor man theory
Ok, let's suppose we want to explain the resonant frequency of an LC circuit.
By kirchoff laws is not so difficult ending to the equation:
By using the Wolfram alpha engine I end up with the ...
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1answer
620 views
how to calculate value of capacitor and inductor in an high power LC circuit?
I am a new learner of electronic.
I am trying to modified a H-bridge motor driver circuit to control a thermoelectric cooler. Since I want to use PWM to control mosfets ON/OFF duration, in order to ...
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1answer
280 views
LC filter for Vref and Vadc
I'm reading an Atmel Data-sheet and it mentions using an LC filter for the Vref and Vadc pins, when simulating a simple small AC voltage with a 5V offset and using an LC filter with 10uH and 10uF the ...
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4answers
750 views
How do I make a real-world verison of this LC circuit?
I'm trying to build the LC oscillator show on the bottom of this page for some school project and I'm having a bit of problems translating the theoretical circuit into a real-world one.
Here's the ...
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1answer
237 views
Filter Design Preparatory Book Recommendation
It is generally agreed that Zverev's "Handbook of Filter Design" is THE reference work for LC filter design. However, I crack it open, and the first thing he does is head off into lattice filter ...
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2answers
638 views
How do I attenuate 30kHz noise?
I'm trying to design an LC low pass filter to attenuate 30-35kHz noise on a 3.3V signal. It's preferable to attenuate higher frequencies as well. So I designed a filter with L=10u, C=1u (which is ...
