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运放输入阻抗问题 op1177



		

			

									
					    wonderwall
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 4, 2013 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    
 
    上面的电路中,反相输入阻抗为100K,而同相输入阻抗为200K,是怎么计算出来的啊?
    
									
			        
		
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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