Explain details about Electronic controllers. Error detector, Single mode, proportional mode, integral mode & derivative mode

1. Electronic Controllers

2. Error detection for a system using a
floating power supply

3. Error detection for a system using a
ground based current & differential
amplifier

4. Mercury switch on a bimetal strip
temperature controller

5. Two position controller with neutral
zone made from op amps &
comparator

6. Op amp proportional mode controller

7. Op amp integral mode controller

8. Op amp differential circuit

9. Practical derivative mode op amp
controller