#### Gandledorf

##### New Member

***broken link removed***

And passes a frequency determined as follows:

fr = 1 / 2 * pi * sqrt(L1 * C1)

However I don't remember how to choose R1 for this circuit.

Assuming I want to bandpass the frequency 56kHz, using an 820uH inductor, and a 10pF ceramic capacitor, I get a pass frequency of 55.579kHz, would this be good enough?