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US 10,320,187 B2Granted
Apparatus to provide reverse polarity protection
AssigneeAptiv Technologies AG
InventorsWolfgang Voigt, Karl-Heinz Parras
Life of this patent
Estimating the term…
Abstract
An apparatus configured to protect one or more system components from damage due to reverse polarity connection of a power supply comprising a relay located between said power supply and said components, and configured to detect when a power supply is provided with reverse polarity and to consequently switch the relay to an open state to isolate said power supply from said components.
Claims10
An apparatus configured to protect one or more system components from damage due to reversed polarity connection of a power supply, said apparatus comprising:
- a relay located between said power supply and said one or more system components, and configured to detect the reversed polarity connection to the power supply and configured to consequently open the relay to isolate said power supply from said one or more system components, wherein said relay includes a SET coil and a RESET coil each connected to the power supply;
- and
- a first switch connecting the power supply to the SET and RESET coils, said first switch being connected to a detection device for detecting the reversed polarity connection, said first switch configured to be switched on to drive current through the SET and RESET coils to open the relay on detection of the reversed polarity connection;
- and
- wherein the SET and RESET coils are arranged in parallel and connected to said first switch such that the current is driven through the SET and RESET coils in opposite directions so that said SET and RESET coils both act in synergy to open the relay when said reversed polarity connection is detected.
2 more elements
Dependencies are inferred from the claim text.