# Simple LM386 Circuit RC Branch Question

Please take a moment to checkout at the LM386 circuit below. The circuit comes directly from the LM386 specifications document:

My question revolves around the output branch consisting of the 0.05 microfarad capacitor and the 10 ohms resistor.

At first I thought that this branch acted as some kind of RC filter but then I realized that on all RC filters (as far as I know) filtering is achieved by taping into the node between the capacitor and the resistor (which is not the case on this branch).

So what is this branch supposed to do? Is it for filtering? Also, what effect does the branch consisting of the 250 microfarad and the speaker has on the output signal? It looks like at the end both branches will combine in parallel and I am having trouble understanding how all these component work together.

Thanks.

• I was once asked if Zobel was spelled with one l or two. "One, of course" since I'd always seen that way. Why the "of course"? I was asked ... without thinking I answered ... "to stop it ringing" – Brian Drummond Sep 15 '15 at 10:32