From: jeedom74000@gmail.com   
      
   One more question on electronics if you may (I know this is an optics forum   
   but seeing the huge amount of spam in there, I don't feel so bad, lol)   
   I have tried to increase the gains at various places in my schematics but when   
   doing so it seems the closed loop is actually doing more or less the same,   
   maybe worse, so I have been wondering why and my guess is that it has to do   
   with the Gain Bandwidth    
   Product of the op amp?   
   The spec sheet of the TL074 I am using states a 3MHz Gain Bandwidth Product.   
   If I understand this correctly it means that if I set a gain of 1million, Gain   
   will start decreasing by 3dB at 3Hz, correct? Which could explain why I get   
   the feeling the closed    
   loop is not doing better at high gain. And so my only option would be to   
   cascade more op amps in my circuit?   
      
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