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November 01, 2025, 09:42:57 am
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Author Topic: negative rectification  (Read 594 times)  Share 

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kenhung123

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negative rectification
« on: May 25, 2010, 12:01:24 am »
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Why can't we rectify the negative cycle?
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kyzoo

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Re: negative rectification
« Reply #1 on: May 25, 2010, 12:06:27 am »
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Because the negative cycle is below the switch on voltage for the diode (assuming you are talking about using a diode as a rectifier), hence it is "cancelled out" as no current can flow through the diode when the PD across it is less than the switch-on voltage.
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kenhung123

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Re: negative rectification
« Reply #2 on: May 25, 2010, 12:07:09 am »
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Oh right. Thanks champ
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kenhung123

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Re: negative rectification
« Reply #3 on: May 25, 2010, 12:10:47 am »
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Btw, what does CRO ripple voltage show? Is it showing the voltage behaviour cross the capacitor? i.e. it uses AC positive then once the peak is reached, it will discharge for the use of load, then after the AC goes back to postive it will charge again?

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