Patent ID: 7928605

Claim:
A downhole tool assembly, comprising: a plurality of casing sections forming a casing assembly, the casing sections electrically coupled to one another; a plurality of tools within the casing assembly that are electrically coupled to the casing assembly, the plurality of tools including at least a first tool sensitive to a magnetic field, and having at least a second tool disposed on a first side of the first tool; a DC power supply within the casing assembly and having a first polarity of the power supply coupled to each tool of the plurality of tools, the power supply disposed on the second side of the first tool; a switching circuit having an input coupled to the DC power supply, and an output, the switching circuit comprising, a first capacitor, a plurality of switches, at least two of the switches coupled to the capacitor, and a controller coupled to control the switches, the controller operative to control the switches to alternately charge the first capacitor from the power supply and discharge the first capacitor to first and second switching circuit output terminals; and a conductor arrangement comprising at least two conductors, and extending between the switching circuit first and second output terminals, past the first tool, to the second tool.