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US 2014/0176194 A1Published application
Zero crossing detector using current mode approach
AssigneeMarvell World Trade Ltd.
InventorDavid COUSINARD
Life of this patent
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Abstract
An apparatus includes a signal converter configured to convert a voltage signal into a current signal and an analog digital converter (ADC) configured to convert the current signal to a digital signal. The apparatus also includes a digital processor configured to process the digital signal and generate an output signal that indicates a zero crossing point of the mains voltage signal.
Claims20
A method comprising:
- converting a voltage signal into a current signal, the voltage signal being based on a mains voltage signal;
- converting the current signal into a digital signal;
- and
- processing the digital signal to generate an output signal, the output signal indicating a zero crossing point of the mains voltage signal.
1 more element
An apparatus comprising:
- a signal converter configured to convert a voltage signal into a current signal, the voltage signal being based on a mains voltage signal;
- an ADC configured to convert the current signal into a digital signal;
- and
- a digital processor configured to process the digital signal to generate an output signal,
- wherein the output signal indicates a zero crossing point of the mains voltage signal.
2 more elements
Dependencies are inferred from the claim text.