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US 12,719,260 B2Granted
Current transformer sensing with saturation protection
AssigneeHamilton Sundstrand Corporation
InventorsChristopher Blazer, Brian Ross
Life of this patent
Estimating the term…
Abstract
An apparatus includes a transient voltage suppression (TVS) device configured to be coupled in parallel with a burden resistor. The apparatus also includes a switch configured to couple the TVS device across the burden resistor. The apparatus further includes a comparator configured to detect a peak output voltage provided by a circuit, determine whether the peak output voltage meets or exceeds a threshold, and control the switch based on whether the peak output voltage meets or exceeds the threshold.
Claims20
An apparatus comprising:
- a transient voltage suppression (TVS) device;
- a switch configured to electrically couple the TVS device in parallel across a burden resistor;
- and
- a comparator configured to:
- detect a peak output voltage provided by a circuit;
- determine whether the peak output voltage meets or exceeds a threshold;
- and
- control the switch based on whether the peak output voltage meets or exceeds the threshold.
5 more elements
A system comprising:
- a current transformer;
- a burden resistor coupled to the current transformer;
- a transient voltage suppression (TVS) device;
- a switch configured to electrically couple the TVS device in parallel across the burden resistor;
- and
- a comparator configured to:
- detect a peak output voltage provided by the current transformer;
- determine whether the peak output voltage meets or exceeds a threshold;
- and
- control the switch based on whether the peak output voltage meets or exceeds the threshold.
7 more elements
A method comprising:
- detecting a peak output voltage provided by a circuit using a comparator;
- determining whether the peak output voltage meets or exceeds a threshold using the comparator;
- and
- controlling a switch that selectively couples a transient voltage suppression (TVS) device electrically in parallel across a burden resistor based on whether the peak output voltage meets or exceeds the threshold using the comparator.
1 more element
Dependencies are inferred from the claim text.