Application of operational amplifier
1. Current source
2. Negative resistance
3. Comparator
4. Subtracter
5. Voltage follower
6. Reverse adder
7. Monostable trigger
8. Active filter circuit
9. Passive filter circuit
10. In phase AC amplifier
11. Reverse proportional amplifier circuit
12. Co directional proportional amplifier circuit
Types of operational amplifiers
1. General purpose integrated operational amplifier
2. High resistance integrated operational amplifier
3. High speed integrated operational amplifier
4. High voltage integrated operational amplifier
5. Power integrated operational amplifier
6. Broadband integrated operational amplifier
7. High precision integrated operational amplifier
8. Low temperature drift integrated operational amplifier
9. Low power integrated operational amplifier
10. High input impedance integrated operational amplifier
11. High voltage and high power integrated operational amplifier
12. Programmable control integrated operational amplifier
The above is the relevant knowledge about the application and types of operational amplifiers. I hope it will be helpful to you.