Patent ID: 8601948

Claim:
A primary explosive detonator circuit, comprising: a first spark gap circuit coupled to a first lead of the detonator circuit configured to provide stray voltage standoff for the primary explosive detonator; an electric match coupled to the first spark gap circuit having a first lead, a second lead, a first resistor arranged in series with the first lead of the electric match, and a second resistor arranged in series with the second lead of the electric match; a detonation explosive positioned adjacent the electrical match opposite first spark gap circuit, wherein the electric match ignites to trigger the detonation explosive; and at least one first shunt capacitor in parallel with the electric match, the at least one shunt capacitor coupled to a second lead of the detonator circuit and to the first spark gap circuit, wherein the combination of the first spark gap circuit and the at least one first shunt capacitor provides protection from radio frequency (RE) exposure of the primary explosive detonator circuit.