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???
02/28/08 16:07
Modified:
  02/28/08 16:14

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#151605 - Exactly, but not only...
Responding to: ???'s previous message
The phase condition is one aspect, the other is the drive level!! Without this high resistance the crystal would have a barbecue as for these quartzes the maximum drive level is only 1µW (microWatt)! Standard HC49U crystals resist up to 1mW, which is thousand times more...

A while ago I have tried to explain this subject here:

http://www.8052.com/forum/read.phtml?id=79811

Kai

List of 13 messages in thread
TopicAuthorDate
Capacitor for 32.768 crystal            01/01/70 00:00      
   Maybe the crystal can needs grounding?            01/01/70 00:00      
      Do never solder the can!!!            01/01/70 00:00      
         Do never solder the can...            01/01/70 00:00      
            So do I...            01/01/70 00:00      
               A berylium copper "touchie" is a good solution            01/01/70 00:00      
   32 KHz Oscilator, Capacitors and Resistor            01/01/70 00:00      
       32 KHz Oscilator, Capacitors and Resistor            01/01/70 00:00      
         Why the 330K resistor is needed            01/01/70 00:00      
            Exactly, but not only...            01/01/70 00:00      
   First Google Search on 32.768KHz oscillators            01/01/70 00:00      
   What micro?            01/01/70 00:00      
   Capacitor for 32.768 crystal            01/01/70 00:00      

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