Norton, current differencing, amplifiers

Discussion in 'General Electronics Chat' started by hp1729, Nov 25, 2015.

  1. hp1729

    Thread Starter Well-Known Member

    Nov 23, 2015
    Norton amplifiers are current differencing amplifiers as opposed to amplifiers that work on a difference of voltage between the two inputs. The drawing attached shows what the typical simplified examples of both types. The schematic symbol is often the same. Sometimes a Constant Current Source symbol is shown between the inputs, but not always. My ORCAD doesn't show that.
    Usually Nortons can be identified in a circuit by the resistor on the non-inverting input going to +V instead of -V or ground.