1. Basic Electricity END

2. 2

3. 3 Cable and wire construction 1. Single core wire. 2. Single core multi-strand wire. 3.Two core multi-strand wire.

4. 4 P VI Power Formula P = V x I V = P / I I = P / V

5. 5 36 watt Bulb How much Current is needed to power the bulb ? P V I P / V = I 36 / 12 = 3 amps 12V

6. 6

7. 7 Types of Fuses Fuse Links

8. 8

9. 9 SWITCHES

10. 10 PRESSURE SENDER

11. 11 TEMPERATURE SENSORS

12. 12 30 87 87a 85 86 Inside a 5 pole Relay 85. Switched 12 volts 86. To earth 30. 12 volt supply 87a. Unswitched 12 volt output 87. Switched 12 volt output RELAYS

13. 13 A standard flasher unit FLASHERS

14. 14 Potentiometer POTENTIOMETERS

15. 15

16. 16 Fuel tank sensor unit 1. Return pipe 2. Potentiometer 3. Float 4. Suction pipe

17. 17 DIODE Symbol for a diode

18. 18 ZENER DIODE

19. 19 A solenoid attached to a hydraulic spool SOLENOIDS

20. 20 PWM Valve Pulse Width Modulating Valve P.W.M. valve

21. 21 Shaft speed sensor

22. 22 Speed And Position Sensors

23. 23 Water in fuel sensor WATER IN FUEL SENSOR

24. 24 Resistance devices RESISTANCE DEVICES

25. 25 Load sensing pin 1. Hollow tube 2. Load sensing core 3. Wire coils 4. Circuit board 5. Wasted section LOAD SENSING PINS

26. 26 Radar gun How Doppler shift works A. Output signal B. Reflected signals

27. 27 How the signal is processed 1. Horn antenna 2. Transceiver 3. Bandpass amplifier 4. Signal processing 5. Output signal generator 6. Buffer amplifier 7. Pulsed signal out

28. 28 A processor showing its pin contacts ELECTRONIC MODULES