Bad Colpitts osc Waveform
			 
			 
			
		
		
		
			
			   Well, offhand, I don't like the way the base is biased...  That  
transistor will be clamping on the negative voltage swing which probably  
answers why the waveform is so poor. 
 
 
 
   If you make a voltage divider for the base voltage, the transistor  
oscillato ought to give a better waveform. 
 
   Perhaps something like 27K from +12 VDC to the basen, and 9.1 K from base  
to ground. 
 
  This should improve the waveform shape.... 
 
 
                Jim Pennell 
                N6BIU 
 
 
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11:40 Pacific Time Zone 
Jan 21 2007 
 
International Time 
19:40 UTC 
21.01.2007 
 
 
		 
		
		
		
		
		
		
		
		
	
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