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Failure detection system for detecting a failure in a power conv

Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent

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Fast power-fail detector for power supplies with energy hysteres

Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent

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Ferroelectric transformer-free uninterruptible power supply...

Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Reexamination Certificate

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Firmware controlled drain-free circuit to allow backup...

Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Reexamination Certificate

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Flexible implementation of distributed DC power

Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent

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Flywheel energy storage system

Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Reexamination Certificate

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Force commutated static isolator circuit

Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Patent

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