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???
09/07/06 18:12
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 		 #123869 - Ah, now I know what you mean!
Responding to: ???'s previous message
Richard, the circuit I showed

http://www.national.com/images/pf...564616.pdf

is NOT the FET buffer!!! It contains the buffer, concretely spoken two of them! The FET-buffer consists of the FET and the one resistor in the source. That's all.

Kai



List of 41 messages in thread
TopicAuthorDate
20 MHz osc.            01/01/70 00:00      
   no answer            01/01/70 00:00      
      by oscilloscope probe            01/01/70 00:00      
         WHAT DERIVATIVE? WHAT VOLTAGE            01/01/70 00:00      
            Why Erik is asking            01/01/70 00:00      
               Do standard i8052's work at 20 MHz?            01/01/70 00:00      
                  who c ares            01/01/70 00:00      
                     Maybe he don't know what a "derivative" is??            01/01/70 00:00      
         ALE probably won't help ...            01/01/70 00:00      
            it will            01/01/70 00:00      
               true enough, but he knows it\'s not oscillating            01/01/70 00:00      
                  you never know            01/01/70 00:00      
                     FET buffer is suited to touch the oscillator pins            01/01/70 00:00      
                        Or a FET probe for your 'scope            01/01/70 00:00      
                           Of course, but expensive...            01/01/70 00:00      
                              Yes, but necessary            01/01/70 00:00      
                                 Dont take it too literaly...            01/01/70 00:00      
                                    quite true            01/01/70 00:00      
                                       we'll never know            01/01/70 00:00      
                                 Ah, now I know what you mean!            01/01/70 00:00      
                                 Low capacitance probes.            01/01/70 00:00      
   That would be tricky...            01/01/70 00:00      
      Well            01/01/70 00:00      
   thanks for all replies,            01/01/70 00:00      
      8259            01/01/70 00:00      
      Operating?            01/01/70 00:00      
      Crystal Types            01/01/70 00:00      
         Xtal            01/01/70 00:00      
            ???            01/01/70 00:00      
               SMS reply            01/01/70 00:00      
                  Only NP0 ceramics must be used!            01/01/70 00:00      
                     I'm curious            01/01/70 00:00      
      Some answers...            01/01/70 00:00      
      no thanks            01/01/70 00:00      
      You really SHOULD respond            01/01/70 00:00      
         So many people SHOULD...            01/01/70 00:00      
            if only they WOULD            01/01/70 00:00      
   Use Inductor            01/01/70 00:00      
      Yes, but at the right place!            01/01/70 00:00      
         so why bother            01/01/70 00:00      
   and why bother #2            01/01/70 00:00      

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