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???
10/23/09 13:46
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#170008 - Depends...
Responding to: ???'s previous message
The answer is: depends on what do you want to measure: presence of a minimum AC voltage, RMS value, peak, etc. And precision.

As the AT89C2051 does not have ADC, you cold only detect presence of AC voltage using, for example http://www.8052.com/forumchat/read/169691 , Kai“s very nice aproach.

Daniel


List of 3 messages in thread
TopicAuthorDate
Measuring of Ac 220v            01/01/70 00:00      
   Search            01/01/70 00:00      
   Depends...            01/01/70 00:00      

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