Patent ID: 7176385

Claim:
A system comprising: an electrochemical unit configured to utilize first and second reactants to generate an electrical current; at least one relatively low voltage electrical device operatively coupled to said electrochemical unit; at least one relatively high voltage electrical device operatively coupled to said electrochemical unit; control circuitry operatively coupled to said relatively low voltage electrical device and said relatively high voltage electrical device, wherein said control circuitry comprises a high voltage region and a low voltage region, said high voltage region comprises electrical components configured for operation at higher voltages than electrical components of said low voltage region, and electrical components of said high voltage region and electrical components of said low voltage region are positioned such that, absent EMI shielding structure between said high and low voltage components, a substantial amount of EMI from said high voltage components would be induced in said low voltage components; and an EMI shielding structure configured to define a conductive enclosure about said high voltage region and said low voltage region and a conductive EMI barrier between said high voltage region and said low voltage region.