BUILDING OF CIRCUIT ON BOARD

This week , we learnt how to make the board circuit manually . As I seen , the process quite complicated but fun . En.Redzuan just showed to us in this class because did not have enough time to all of us do the practical.

EQUIPMENT

1. UV machine
2. PCB drill
3. soldering iron
4. power supply
5. PCB cutter
6. handtools
7. acid ferum chloride
8. sodium

WAYS TO BUILD CIRCUIT ON BOARD

Creating Printed Circuit Boards (PCBs) is easy and fun for the whole family! But read the disclaimer — heat and corrosive chemicals are dangerous ;-) After you’ve prototyped and tested your circuit design, creating a PCB will provide a sturdy and reliable backbone for your circuit and will give your project a professional finished quality.Using PCBs can even help reduce the time you spend building circuits, especially if you are producing multiple units, as you only need to follow a parts placement diagram (there’s no longer any need to worry about specific interconnections)

1. prepare circuit artwork
2. expose the board to UV light by using UV machine ( 60-90 seconds )
3. developing ( use sodium+water to tear off green layer on board )
4. etching ( use acid to tear off copper layer that not going to use )
5. cutting the board to specific size
6. drilling
7. assembling all the component with right terminals of positive and negative
8. soldering the components
9. testing by using power supply
10. submit