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Topic: RLC Filter : Series vs Parallel ? (Read 987 times) previous topic - next topic

screw32

In learning about RLC filters, I was wondering if there is an advantage/disavantage to using a series circuit vs a parallel circuit (tank circuit: L and C)? Is one more common than the other?

retrolefty


In learning about RLC filters, I was wondering if there is an advantage/disavantage to using a series circuit vs a parallel circuit (tank circuit: L and C)? Is one more common than the other?


They both have their uses, a lot depends on the impedance level of the source and load. In the arduino world one deals mostly with simple low pass filters for lowering noise for analog inputs or for converting PWM outputs to true analog output voltages.

Lefty


Grumpy_Mike

Not only are there parallel and series but there are other combinations as well, see towards the end of this page:-
http://en.wikipedia.org/wiki/RLC_circuit

The difference is whether you want a short circuit or open circuit (low impedance or high impedance) at the resonant frequency and that depends on the application.

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