An ammonia injection grid covered with sound adsorption material for a selective catalytic reduction system that provides uniform distribution of ammonia to the SCR catalyst in NOX reduction systems and provides noise suppression for heat recovery steam generation systems, packaged boilers, simple cycle catalyst systems and fired heaters for superior operational efficiency. The filter comprises at least one circuit composed of a diode and an inductor connected in series, wherein the diode induces a parasitic capacitance and the circuit is grounded. The double layer capacitor supplies power for maintaining integrity of data during a data transfer occurring in the flash storage device when the power supplied by the power source is disrupted.