Methods and apparatuses for communicating information are described. A filter within the interior chamber substantially surrounds the pressure regulator, providing a large filter surface area, and hence a low resistance to ink flow. Each tile assembly includes left and right center tiles positioned side-by-side. Additionally, a third channel extends around the inner channel and the first and second oxidizer channels, wherein the third channel is configured to convey at least one of the solid fuel feed or the liquid reactant or moderator to the reaction zone. To reduce the tendency of the leadwire to pull out of the anode due to stresses encountered during manufacturing andor use of the capacitor, the manner in which the wire is inserted is selectively controlled in the present invention. Another end of the clamping member is detachably installed to the fixed end.