# Tag Info

Accepted

### The Intuition for RLC circuits

[!Quote] by a ConcernedCitizen Resistors are the electrical equivalent of friction and produce losses to remove energy from the system. If you drop a frictionless pendulum to swing it, how long does ...
• 56.9k
Accepted

• 78.3k
Accepted

### Inductor and Capacitor Timer - Strange behaviour: Need help understanding

I'll address myself to the simulator and mathematics, shortly. They match up. That won't answer your last question about what you observed when scoping out a circuit, though. But let's say that your ...
• 11k
Accepted

### Input filter LC for switching power supplies

With these types of filter I find that it's best to assume it will attenuate high-frequency noise based on a 1st order response (as if the inductor were replaced with a resistor) then, you put the ...
• 464k
Accepted

### How can these passive RLC circuits change a sinusoid's frequency?

There is no loss in the system, therefore the startup transient continues oscillating forever. (Due to numerical errors in the transient simulator, it won't actually go forever.) The measurement is ...
• 39.2k

### Using LC filter instead of RC filter in mains powered circuits

LC noise filtering benefits were explained in other answers. This is an addition specific to triacs or thyristors. One reason to use an inductor in series with a triac is that a triac has maximum ...
• 576

### What does the value of reactive power represent physically?

"Reactive power" is one of several possible ways of reconciling the fact that in AC systems, the voltage times the current isn't the average power. The reason rms(V) x rms(I) is not ave(V x I) is ...
• 314k
Accepted

### How to sketch the Bode diagram of the output filter of a Buck converter?

Background Starting with your result and proceeding: \begin{align*} H\left(s\right)&=\frac{R}{R\,L\,C\,s^2+L\,s+R}\\\\ &=\frac{1}{L\,C\,s^2+\frac LR\,s+1}\\\\ &=\frac{\frac 1 {L\,C}}{s^2+...
• 78.3k

### Am I on the right path to solve this RLC-Circuit? (Need to find the voltage at the resistor)

As you could figure out, your source is expressed as a phasor, hence we can assume safely the solution can be expressed with phasors and impedances, in consistency with the requirement of ignoring ...
• 1,427
Accepted

### LT Spice: parallel RLC circuit resonator giving weird frequency response?

This is a likely candidate for show-stopper of the month: - Then, when you fix that you'll realize that a voltage source (V1) is ideal and won't care a damn about C1 and L1 being present i.e. you'll ...
• 464k

### Input filter LC for switching power supplies

That's probably fine. A complete analysis requires much more information (voltage range, amount of ripple and noise, surge conditions if applicable, environmental, etc.), but these data likely don't ...
• 39.2k