- #1
moogull
- 86
- 0
Hello all,
I'm not quite sure if this is a physics question or an EE question because it came up in an electronics design course for physicists with mostly engineering motivation, anyways here goes:
I have an RLC band pass filter with a sinusoidal AC voltage input (Agilent function generator). I am measuring the input voltage with an oscilloscope but it is measuring at around 768mV and not at 1V; the input voltage is attenuated by about a third. Is this being caused by a back EMF produced by the inductor?
I'll try and make a diagram below to show what kind of filter it is:
Basically the capacitor and inductor are in parallel with each other and actually go to ground.
The scope is measuring at Vin,
R = 100 ohms,
L = 100 microHenries,
C = 1 microFarad,
What I am thinking is that the apparent droop that I am seeing on the scope is caused by a back EMF from the inductor, is this what is really happening?
I am interested in knowing the true cause!
I'm not quite sure if this is a physics question or an EE question because it came up in an electronics design course for physicists with mostly engineering motivation, anyways here goes:
I have an RLC band pass filter with a sinusoidal AC voltage input (Agilent function generator). I am measuring the input voltage with an oscilloscope but it is measuring at around 768mV and not at 1V; the input voltage is attenuated by about a third. Is this being caused by a back EMF produced by the inductor?
I'll try and make a diagram below to show what kind of filter it is:
Code:
--------- L -------
Vin----R------|......|----------Vout
----------C-------
Basically the capacitor and inductor are in parallel with each other and actually go to ground.
The scope is measuring at Vin,
R = 100 ohms,
L = 100 microHenries,
C = 1 microFarad,
What I am thinking is that the apparent droop that I am seeing on the scope is caused by a back EMF from the inductor, is this what is really happening?
I am interested in knowing the true cause!
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