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???
04/01/08 17:12
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#152849 - impedance answer
Responding to: ???'s previous message
how high impedance should the speaker be?
The speaker (and a series resistor) should provide enough resistnce that the Io max from the datasheet does not get exceeded.

The answer to all your questions are in the datasheet.

Erik


List of 17 messages in thread
TopicAuthorDate
driving a speaker            01/01/70 00:00      
   Amplifier needed            01/01/70 00:00      
      8051 Output port drive current            01/01/70 00:00      
         current            01/01/70 00:00      
            Links            01/01/70 00:00      
               links            01/01/70 00:00      
                  Think about it!            01/01/70 00:00      
         speaker            01/01/70 00:00      
      ... or higher-impedance speaker            01/01/70 00:00      
         impedance            01/01/70 00:00      
            Speakers are what they are ...            01/01/70 00:00      
            impedance answer            01/01/70 00:00      
         piezo            01/01/70 00:00      
            The reason you're in school is to learn            01/01/70 00:00      
               Library?            01/01/70 00:00      
            research            01/01/70 00:00      
               You can use a transistor, but if you read ...            01/01/70 00:00      

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