Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2008-03-25
2008-03-25
Pert, Evan (Department: 2826)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S765010, C702S118000
Reexamination Certificate
active
11685873
ABSTRACT:
An electronic switching apparatus for use in automated test equipment. The electronic switching apparatus includes a transconducting device having source and drain regions where at least one of the source and drain regions is configured to be coupled to a voltage source. A voltage comparison means is coupled to the transconducting device for determining a relative magnitude of voltage applied to the source and drain regions and a multiplexer has an input coupled to the voltage comparison means for selecting a higher of the relative magnitudes of voltage. A gate adder having an input is coupled to an output of the multiplexer and an output is coupled to a gate of the transconducting device. The gate adder is configured to add a fixed voltage to the higher of the relative magnitudes of voltage. A bulk adder having an input is coupled to an output of the multiplexer and an output is coupled to a bulk of the transconducting device. The bulk adder is configured to subtract a fixed voltage from the higher of the relative magnitudes of voltage.
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patent: 6678850 (2004-01-01), Roy et al.
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Pert Evan
Schneck & Schneck
Silicon Test System, Inc.
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