IC for biasing opamp

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

  1. akshay15

    Thread Starter New Member

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


    Sep 20, 2005
    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.