Methods of low-level voltage amplification

Discussion in 'General Electronics Chat' started by hunterage2000, Jun 10, 2012.

  1. hunterage2000

    Thread Starter Active Member

    May 2, 2010
    400
    0
    Hi, For every book or journal I have looked at, the method for amplifying the difference between two low-level voltages is op-amps, mainly instrumentation amplifiers.

    Can anyone suggest other ways of doing this?
     
  2. #12

    Expert

    Nov 30, 2010
    16,257
    6,763
    You can built the equivalent of an op-amp by using one transistor at a time or one vacuum tube at a time. You can apply the two voltages, one to the base of a transistor and one to the emitter. That would make a difference amplifier.

    Just a couple of ideas.
     
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