Sorry for the ignorance. I'm trying to figure out how these parts work> 274-374 (Phono Plug) and 274-251(jack) I ordered these two parts from RadioShack and they don't appear to be correct. Maybe the part numbers have changed? The plug doesn't come apart and I see no way to use the Jack with this part.
how would i modify this circuit for, for example, being driven by an Arduino? these devices supply perhaps 40mA max current and do not contain the current-limiting resistor apparently present in the Ocelot.