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Glossary of terms you will come across during your Phase 2 training.


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H1 halogen lampThis is a halogen lamp. Because halogen lamps can operate at much higher temperatures, they are brighter (more powerful) than similar bulbs.

Take care when fitting these lamps, never handle the glass envelope directly. When supplied, the lamp is enclosed in packaging, designed to protect the glass envelope whilst it is being fitted.

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H3 Halogen LampThis is a halogen lamp. Because halogen lamps can operate at much higher temperatures, they are brighter (more powerful) than similar bulbs.

Take care when fitting these lamps, never handle the glass envelope directly. When supplied, the lamp is enclosed in packaging, designed to protect the glass envelope whilst it is being fitted.

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H4 HalogenThis is a halogen lamp. Because halogen lamps can operate at much higher temperatures, they are brighter (more powerful) than similar bulbs.

Take care when fitting these lamps, never handle the glass envelope directly. When supplied, the lamp is enclosed in packaging, designed to protect the glass envelope whilst it is being fitted.

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H7 HalogenThis is a halogen lamp. Because halogen lamps can operate at much higher temperatures, they are brighter (more powerful) than similar bulbs.

Take care when fitting these lamps, never handle the glass envelope directly. When supplied, the lamp is enclosed in packaging, designed to protect the glass envelope whilst it is being fitted.

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HacksawA saw used by cp fitters for cutting metal.

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Plant vehicle electrical systems can only use direct current electricity (DC).

Electrical generators used on plant vehicles and machines produce alternating current (AC).

Before this AC can be used, it must first be rectified by using diodes to convert the AC to DC.

Depending on the number of diodes we use, and how we use them, we can get full wave rectification or half wave rectification.

Half wave rectification only makes use of the positive output of the generator. The negative output is not used.

Check out this course project which analyses full wave rectification and half wave rectification.


Contributor: Lorcan McGivney, CP Fitters, January to May, 2012.

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HallThe Hall effect, named after the man who discovered it, describes the effect when a conductor carrying current is subjected to a magnetic field. Under these circumstances, a small voltage is generated at right angles to the direction of current flow. This is known as Hall voltage, Vh.

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The Hall IC is an Integrated Circuit (IC) used in conjunction with Hall sensors. Hall voltages are very small, and ICs are used to amplify them before transmitting them on to an ECU.

Check here for more.

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Ordinary lamps:

Typical headlamp bulbAn incandescent light bulb is a glass envelope filled with gas, with a wire filament inside it. When electricity is passed through the filament, it becomes  white hot. This is heat in the visible range. As the filament burns, byproducts evaporate off it and deposit on the inside of the glass tube. After a certain period in service, the filament either breaks or simply burns away completely, and the bulb burns out.

Halogen Lamps:

Typical halogen lampA halogen lamp is also an incandescent light, but the gas in the envelope is halogen and the filament is made of tungsten. Again, when the lamp is on, the filament gets white hot and begins to burn, but the halogen gas captures the evaporating tungsten and deposits it back on the filament. Thus a halogen light bulb will last quite a lot longer than the average incandescent bulb.

Advantages of Halogens:

  • They operate at much higher temperatures, so they burn brighter (they are more powerful).
  • They glow white hot in operation, at much higher temperatures than equivalent bulbs, so their light is much more natural looking. Conventional incandescent bulbs burn at much lower temperatures and give off more 'yellow' light.
  • Because the halogen gas deposits tungsten back on the filament as it burns, halogens last much longer than equivalent bulbs.

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All data, information, documents, photorgraphs etc. that live in computer memory are lost the instatnt the machine is switched off.
Any data that needs to be kept for further use must be saved to the hard disk.
Any data saved to the hard disk can be retrieved and loaded back into memory (RAM) at any time.
As well as storing data, hard disks also store the computer operating system. In the case of the C.P. Section, this is Windows Professional XP. As well as an operating system, the computer also needs various programs like Word and Excel. The size of hard disks varies-in other words their storage capacity varies. Their physical size stays the same so that the hard disk from one machine can be mounted in another.
Most hard disks connect to the motherboard using the ATA standard (IDE).
Two drives can use the same connecting cable. As long as one is designated Master and the other as Slave, there will be no problems.
As of mid 2006, the new Serial ATA (SATA) standard is now almost universal. It is faster than the ATA standard.
There is only one SATA drive per connection to the motherboard, so there is no need to designate master and slave drives.

Sata disk 1

Sata disk 2

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Please note, if you want to contact the main Training Centre in Baldoyle, you need to ring 01-8167400.


If you want to contact the CP Fitters' Section, you can Contact Us by email, admin@cpfitters.info, or by telephone: 00 353 1 8167543 This number gets you through to the CP Fitters' Section, Baldoyle Satellite Unit.

Our Address is : Construction Plant Fitters' Section, Unit 116, Grange Way, Baldoyle Industrial Estate, Baldoyle, Dublin D13 CA48.
We operate in a satellite unit which is about 300 metres away from the main training centre. You can see the location of this unit here, in Google Maps. You can also Check here for directions to the Baldoyle Training Centre.

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