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# Tag Info

1 vote

### Why are active filters preferred over passive filters?

I think, the most important aspect is that active filters do not need inductors in form of coils. This is because mechanical coils have weight and volume are hard to tune are problematic for ...

### Why are active filters preferred over passive filters?

Passive and active filters each have their domain of superiority. If the interviewer thought that one was definitely 'better', he must have been operating in one of those domains (is the charitable ...
1 vote

### How to apply KVL with current source?

For KCL,  \begin{align*} I_{_\text{L}}+I_{_\text{C}}&=I_1 \\\\ I_{_\text{L}}+C_1\frac{\text{d}}{\text{d}t}V_{_\text{C}}&=I_1 \\\\ I_{_\text{L}}+C_1\frac{\text{d}}{\text{d}t}\left(L_1\frac{\...

### How to apply KVL with current source?

First, The equation in the box is incorrect. Remember that $i_C=C\frac{dv_C}{dt}$. Second, $i_C$ can be substituted from the KCL equation.
1 vote
Accepted

### How to calculate the LC filter output voltage with a specified frequency?

Since you seem to understand complex impedance, and how they will divide, you can use Excel for the calculations. This is a modification of a spreadsheet that I made a long time ago. Thanks to ...
1 vote

### How to calculate the LC filter output voltage with a specified frequency?

The problem you pose is 2nd order. Which is convenient and well-analyzed. In one way, the problem is fairly simple. But before you can say it is so simple, you need to be a little bit comfortable with ...
Accepted

### What is the frequency at which a series RLC circuit stores maximum energy?

The question is, is there any other radian frequency at which the function ' Energy(t) ' peaks greater than that at resonance? I was wrong in my "now deleted" answer and, I should have been ...

### What is the frequency at which a series RLC circuit stores maximum energy?

For a overdamped series RLC, at 0 Hz (DC). That's when energy is stored just in the capacitor. There is no current, so no power is wasted in the R and L.