Fast current transient suppression in a test system
AssigneeKeithley Instruments, LLC
InventorArthur Sypen
Life of this patent
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Abstract
A current transient suppression circuit includes an inductor electrically connected to a test signal by an input of the inductor, at least one switching device electrically connected to an output of the inductor, and an output of the at least one switching device connected to a shunt path. A method of suppressing current transients in a circuit includes receiving a test signal at an inductor, and when the test signal comprises a current transient, the current transient is received at the inductor, activating at least one switching device electrically connected to the inductor to shunt the current transient away from a device under test.
Claims18
A current transient suppression circuit, comprising:
- an inductor electrically connected to a test signal by an input of the inductor;
- at least one switching device electrically connected to an output of the inductor;
- an output of the at least one switching device connected to a shunt path;
- and
- a bridge rectifier electrically connected to an output of the inductor between the output of the inductor and the at least one switching device.
A current transient suppression circuit, comprising:
- an inductor electrically connected to a test signal by an input of the inductor;
- at least one switching device electrically connected to an output of the inductor;
- an output of the at least one switching device connected to a shunt path;
- and
- a guard circuit between the test signal and the at least one switching device.
A current transient suppression circuit, comprising:
- an inductor electrically connected to a test signal by an input of the inductor, wherein the inductor comprises a primary winding of a transformer;
- at least one switching device electrically connected to an output of the inductor;
- and
- an output of the at least one switching device connected to a shunt path.
A method of suppressing current transients in a circuit, comprising:
- receiving a test signal at an inductor;
- when the test signal comprises a current transient, the current transient is received at the inductor, activating at least one switching device electrically connected to the inductor to shunt the current transient away from a device under test;
- and
- providing a bridge rectifier electrically connected to an output of the inductor to allow bipolar operation.
A method of suppressing current transients in a circuit, comprising:
- receiving a test signal at an inductor;
- when the test signal comprises a current transient, the current transient is received at the inductor, activating at least one switching device electrically connected to the inductor to shunt the current transient away from a device under test;
- and
- providing a guard circuit electrically connected to a source of the test signal.
Dependencies are inferred from the claim text.