CS222290A2 
                (en )
               
            
            
           
          
            1991-10-15 
            
            
           
          Amplifying arrangement 
      
         
        
          
             
              
                JPS6386603A 
                (ja )
               
            
            
           
          
            1988-04-18 
            
            
           
          進行波管増幅器のためのリニアライザ 
        
         
        
          
             
              
                US2120823A 
                (en )
               
            
            
           
          
            1938-06-14 
            
            
           
          Coupling means for thermionic valve circuits 
      
         
        
          
             
              
                KR900007916B1 
                (ko )
               
            
            
           
          
            1990-10-23 
            
            
           
          주파수 변환장치 
        
         
        
          
             
              
                GB496872A 
                (en )
               
            
            
           
          
            1938-12-06 
            
            
           
          Improvements in or relating to thermionic valve amplifiers 
      
         
        
          
             
              
                BE444587A 
                (en, 2012 )
               
            
            
           
          
             
            
            
           
           
         
        
          
             
              
                US3370245A 
                (en )
               
            
            
           
          
            1968-02-20 
            
            
           
          Differential amplifier with common mode rejection 
        
         
        
          
             
              
                GB1558677A 
                (en )
               
            
            
           
          
            1980-01-09 
            
            
           
          Fm to am carrier converters 
      
         
        
          
             
              
                US9257944B2 
                (en )
               
            
            
           
          
            2016-02-09 
            
            
           
          Method and arrangement for driving a microphone 
        
         
        
          
            
             
               
              DAVID  
            
           
          
            
            1960 
            
           
          Analysis of Four~ Frequency Nonlinear Reactance Circuits 
         
        
          
             
              
                GB544175A 
                (en )
               
            
            
           
          
            1942-03-31 
            
            
           
          Improvements in negative feedback thermionic amplifiers 
      
         
        
          
             
              
                US3247462A 
                (en )
               
            
            
           
          
            1966-04-19 
            
            
           
          Balanced paraphase amplifier including a feed forward path 
        
         
        
          
             
              
                US2844667A 
                (en )
               
            
            
           
          
            1958-07-22 
            
            
           
          Cascade transistor amplifiers 
        
         
        
          
             
              
                US3516003A 
                (en )
               
            
            
           
          
            1970-06-02 
            
            
           
          High-gain single-stage a.c. cascode amplifier circuit 
        
         
        
          
             
              
                US2920189A 
                (en )
               
            
            
           
          
            1960-01-05 
            
            
           
          Semiconductor signal translating circuit 
        
         
        
          
             
              
                US3280336A 
                (en )
               
            
            
           
          
            1966-10-18 
            
            
           
          Single resonance photodiode parametric amplifier converter 
        
         
        
          
             
              
                US20210167738A1 
                (en )
               
            
            
           
          
            2021-06-03 
            
            
           
          Amplifier circuit 
      
         
        
          
             
              
                US2109760A 
                (en )
               
            
            
           
          
            1938-03-01 
            
            
           
          Amplifier circuit scheme with pushpull output 
      
         
        
          
             
              
                US2221102A 
                (en )
               
            
            
           
          
            1940-11-12 
            
            
           
          Push-pull amplifier circuit 
      
         
        
          
             
              
                US3195060A 
                (en )
               
            
            
           
          
            1965-07-13 
            
            
           
          Amplitude detecting device 
        
         
        
          
             
              
                USRE26567E 
                (en )
               
            
            
           
          
            1969-04-29 
            
            
           
          Amplifier of the transformer-output
type with regenerative feedback net-
works for reducing low frequency
distortion  
         
        
          
             
              
                BE524847A 
                (en, 2012 )
               
            
            
           
          
             
            
            
           
           
         
        
          
             
              
                US2165769A 
                (en )
               
            
            
           
          
            1939-07-11 
            
            
           
          Distortion-free amplifier circuit 
      
         
        
          
             
              
                BE562085A 
                (en, 2012 )
               
            
            
           
          
             
            
            
           
           
         
        
          
             
              
                BE466969A 
                (en, 2012 )