IC for biasing opamp

Discussion in 'General Electronics Chat' started by akshay15, Jan 1, 2011.

  1. akshay15

    Thread Starter New Member

    Dec 30, 2010
    9
    0
    what are the IC's used for biasing opamps (both its negative terminal and positive terminal) i.e pin 4 and pin 7.
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    293
    That is not a bias. A single op amp needs electrical power to operate. Pin 4 is the input for the negative voltage, and pin 7 (pin 8 if a dual) is for the positive voltage input. These voltages actually power the internal circuitry.

    A bias is a voltage applied to one input pin - usually the non-inverting one - to give a permanent offset at the output.

    Back to the voltage supplies - the IC's supplying regulated voltages would be, then voltage regulators. They are usually complimentary to one another, so if you use a 7812 to supply a positive 12 VDC to pin 7, you would use a 7912 to supply -12 VDC to pin 4. Google "voltage regulator ics" to learn more about them.
     
    Last edited: Jan 1, 2011
  3. akshay15

    Thread Starter New Member

    Dec 30, 2010
    9
    0
    thanx ,,can you tell me what are the languages a microcontroller understands ?
     
  4. kubeek

    Expert

    Sep 20, 2005
    5,266
    986
    Machine code specific for each microcontroller family, translated from different programming languages using compilers. If you really wanted, you could run Java on a PIC.
     
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