1. http://www.talkingelectronics.com/projects/OP-AMP/OP-AMP-1.html Op-Amp (Operational Amplifier)

2. Inside of an op-amp… How many transistors do you see?

3. What is an op-amp?

4. Comparator

5. Op-Amp (Comparator) and LDR

6. Voltage follower (V out = V in )

7. An op-amp draws very little current (has an almost infinite input impedence) which makes it very useful in voltage dividers.

8. Amplifier (Gain = 2)

9. Amplifier (Gain = 5.55)

10. Unipolar and Bipolar supply

11. Inverter (Gain = -1) 1k

12. Inverting Amplifier (Gain = -2) 1k 2k

13. Uses of Op-amps: 1.Voltage follower (buffer) 2.Comparator 3.Non-inverting amplifier 4.Inverting amplifier 5.Schmitt Trigger 6.Differentiator 7.Integrator 8.Summing Circuits 9.Current-to-Voltage Converter 10.Logic Gates

15. Offset Null

16. TDA2822 Dual Power Amplifier

17. TDA2822

18. Inside of a TDA2822