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I need to detect the zero voltage for switching on the mosfet .i am currently working on quasi resonant converter.do anyone have an idea on how to detect the zero voltage crossing using simulink blocks?

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Ravikrishna sivakumar 2011-12-1

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采纳的回答： Guy Rouleau

how to detect the zero voltage crossing using simulink blocks.

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Guy Rouleau 2011-12-21

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The Hit Crossing block is designed especially to detect zero-crossing.

http://www.mathworks.com/help/toolbox/simulink/slref/hitcrossing.html

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mahmoud ibrahim 2011-12-20

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you can use switch and make it u=0 http://www.mathworks.com/help/toolbox/simulink/slref/switch.html

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