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Soldering Safety - PowerPoint Presentation

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					Soldering Safety – Soldering Irons are very HOT!
1. When I am not using the           5. I will not touch the soldering     9. I can snip the excess wires
soldering iron, I should return it   iron to see if it is on. Instead, I   off with wire clips once I am
to the holder because________        will ______________________           finished because___________
_________________________            _________________________             _________________________
_________________________            _________________________             _________________________

2 I will put a heat mat under        6. I wear an apron when               Draw a soldering iron below:
the area I am working on             soldering so that ___________
because __________________           _________________________
_________________________            _________________________
_________________________            _________________________


3. Good ventilation is important     7. I will clean the iron between                 You have
when soldering because _____         each join to make sure ______
_________________________
_________________________
                                     _________________________
                                     _________________________
                                                                               5 minutes
                                                                               to discuss the answers
                                                                                   with your table.
4. Only one person should            8. I can use a crocodile clip
solder at a time and they            between the board and my
should concentrate well so that      component to ______________
_________________________            _________________________
_________________________            _________________________
_________________________
_________________________
                                                                 Name:
Lesson Objectives:
To learn how to solder safely and effectively.
Success Criteria
Must:
Have filled in your table of resistor values and added the first six resistors
to your board, bending the wires over so that they don’t fall off.
Should:
Have soldered the six resistors in place safely and accurately.
Could:
Have completed the soldering task and the soldering safety homework
sheet (NEATLY!).


SOLDERING IRONS ARE DANGEROUS - ANYONE CAUGHT ACTING
STUPIDLY WITH EQUIPMENT WILL AUTOMATICALLY BE GIVEN
AN AFTER SCHOOL DETENTION
               Homework:




   Complete the soldering safety sheet.
For next lesson (Wednesday 7th December).


            Marks will be given
      for the quality of your answers
             and for neatness!
SOLDERING
  a step by step guide.
      ADD YOUR COMPONENT (example shown is a resistor)
by pushing the wires through the holes you have drilled in your PCB.
      ADD YOUR COMPONENT (example shown is a resistor)
by pushing the wires through the holes you have drilled in your PCB.




     Bend over all of the wires you’re not going to solder now.
CLEAN THE POINT OF THE IRON - take away any dirt on a damp
    (not soaking wet) sponge when the iron is heated up.




          This will help your solder to flow properly.
                       ”TIN” THE IRON.
This just means you should melt a tiny bit of solder onto the point.




    Try to avoid breathing in the fumes - they can be harmful.
               HEAT YOUR COPPER TRACK
       by holding the iron’s point on it for 3 seconds.




     If you heat it for too long, the track will burn away.
If you don’t heat it for long enough, the solder will not stick.
TOUCH THE SOLDER WIRE ONTO THE TRACK
 and heat it quickly from above with the iron.
   LIQUIFY JUST ENOUGH SOLDER TO MAKE THE JOIN
              and then pull the iron away.




       Your join should look something like this one.
You should only need a small amount of solder for each join.
    GOOD AND BAD ATTEMPTS




     GOOD:                     BAD:
 The join is complete     Not enough solder
and will hold in place.    applied. No join.
   GOOD AND BAD ATTEMPTS




     BAD:                   BAD:
 Copper track not     Copper track burned
heated long enough.     so no current can
      No join.        pass through. No join.
GETTING YOUR RESISTORS IN THE RIGHT ORDER




                                                 violet
                                                 grey




 Bear in mind – this PCB is shown from the BACK.
 Use these colour codes to fill the values on your sheet.
Lesson Objectives:
To learn how to solder safely and effectively.
Success Criteria
Must:
Have filled in your table of resistor values and added the first six resistors
to your board, bending the wires over so that they don’t fall off.
Should:
Have soldered the six resistors in place safely and accurately.
Could:
Have completed the soldering task and the soldering safety homework
sheet (NEATLY!).
ELECTRONIC ORGAN RESISTOR CODES
No.                             VALUE
R1     red    violet   orange
R2     red     red     orange
R3    brown   black    orange
R4    brown    grey    orange
R5    brown   green    orange
R6    brown   green    orange
R7     blue    grey      red
R8    brown    red     orange
R9    brown    red     orange
R10   brown   black    orange
R11    grey    red     orange
ELECTRONIC ORGAN RESISTOR CODES
No.                        VALUE
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
ELECTRONIC ORGAN RESISTOR CODES
No.                        VALUE
R1                          27K
R2                          22K
R3                          10K
R4                          18K
R5                          15K
R6                          15K
R7                          6.8K
R8                          12K
R9                           12K
R10                          10K
R11                         82K

				
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