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Seminar final


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op amp

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Seminar final

  1. 1. Welcome
  2. 2. Seminar on OP-AMP as Summing Amplifier & Subtractor Presented by: Satwant Singh & Pardeep Kumar
  3. 3. What is OP-AMP ? OP-AMP is a circuit which can perform logical mathematical operations. inverting input non-inverting input V  output V + Symbol of OP-AMP  +
  4. 4. Characteristics of an Ideal OP-AMP <ul><li>Infinite Voltage Gain </li></ul><ul><li>Infinite Bandwidth </li></ul><ul><li>Infinite Input Resistance </li></ul><ul><li>Zero Output Resistance </li></ul><ul><li>Zero Offset Voltage </li></ul><ul><li>Infinite CMRR </li></ul>
  5. 5. Block Diagram of OP-AMP Input Stage Inter- mediate stage Level Shifting stage Output stage Output Input Inverting Non Inverting Emitter follower With constant Current source Complementary Push Pull amplifier Dual input Balanced Output Diff.Amp Dual input Unbalanced Output Diff.Amp
  6. 6. Configurations of OP-AMP <ul><li>Inverting </li></ul><ul><li>Non-Inverting </li></ul>
  7. 7. A summing amplifier sums several (weighted) voltages: Output is Inverted Summing Amplifier
  8. 8. When and R f independent Summing Amplifier
  9. 9. When Summing Amplifier
  10. 10. Experimental Part
  11. 11. Aim : To study applications of OP-AMP as Subtracting and Summing amplifier. Apparatus used <ul><li>OP-AMP designer kit consisting of- </li></ul><ul><li>Inbuilt 741-IC. </li></ul><ul><li>Inbuilt resistors of different values. </li></ul>