I have built a LC parallel tank circuit, and I am having a problem with it. I have a ground that is placed between two polarized capacitors in series. With the positive leads grounded. And an output on the opposite of the input. The problem I am having is when I connect the ground the input signal shorts out to the ground, and I get no signal on the output. And when I disconnect the ground connection the circuit doesn't filter out the unwanted frequencies. Can someone please let me know what I'm doing wrong. Thanks.