General Physics II,
University of Alabama
Dr. LeClair
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pleclair
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1:04 AM
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3 comments:
can you solve the problem by breaking the circuit up into 2 individual circuits and then add them together? For example, the first being a resistor and inductor, the inductor would attract the low frequency, so the high frequency would pass. This means it would be a high pass filter? Second filter would be a low pass since it is conductor and conductors like high frequencies. If you add the two parts together to look like the total circuit because the inductor and capacitor are in parallel, they would cancel out. Logically, I can see why, but I can't mathematically prove this. I that the voltage lags 90 degrees behind the current......this is where I get stuck.
You're on the right track. The circuit will hate both high and low frequencies since there is both an inductor and a capacitor to ground, and as a result it will end up liking a middle range of frequencies.
I'm about to create a top-level post with some hints on this one.
Thank you for the in-depth post on the problem. After looking up information on the internet about band pass filters I understand the circuit. It also said that normally 2 RC low pass and high pass filters are put back to back instead of using RLC filter due to it being so bulky on the circuit board. I found that interesting. BTW, is this how you control the volume of the radio??
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