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What to do if the R-L-C Circuit behaves like this?
It is a series R-L-C Circuit and an oscilloscope was connected to the L-C to find their relationship. The oscilloscope shows that the L C waves are about like < 90 apart. What could be wrong then?
Here is what the oscilloscope shows. The lower amplitude is the inductor and the other is the capacitor. The inductor has a 5mV/Div and the other one has the 5V/Div. The time division is 50 microseconds, they're more like in phase, rather than out of phase by 180.
2 Answers
- billrussell42Lv 79 years agoFavorite Answer
"like < 90 apart" means what?
Exactly how is the scope connected?
- Anonymous9 years ago
In a capacitor "C" the current leads the voltage wave by 90 degrees, in the inductive load, "L" the current lags the voltage by 90 degrees, if the impedance of the two is equal they will exactly cancel each other out and you will get a current wave that is in step with the voltage wave. apparently this is not the case in your situation. one of the impedances is higher than the other, Either the L or the C, but you have not given enough information to tell which one it is.
In the resistive load the current and voltage do not get out of step, and enough of a purely resistive load will drag the whole circuit back towards being in step.
That is all that can be said for certain with the info you offered, sorry.
