Soldering Safety – Soldering Irons are very HOT!

Name:

1. When I am not using the soldering iron, I should return it to the holder because__________________________________________________________

2 I will put a heat mat under the area I am working on because ____________________________________________________________________

3. Good ventilation is important when soldering because _______________________________________________________

4. Only one person should solder at a time and they should concentrate well so that ____________________________________________________________________________________________________

5. I will not touch the soldering iron to see if it is on. Instead, I will ________________________________________________________________________

6. I wear an apron when soldering so that ______________________________________________________________________________________

7. I will clean the iron between each join to make sure ________________________________________________________

8. I can use a crocodile clip between the board and my component to ________________________________________________________________

9. I can snip the excess wires off with wire clips once I am finished because_____________________________________________________________

You have

5 minutes

to discuss the answers with your table.

Draw a soldering iron below:

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.

Marks will be given for the quality of your answers

and for neatness!

SOLDERINGa 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:The join is complete

and will hold in place.

BAD:Not enough solder applied. No join.

GOOD AND BAD ATTEMPTS

BAD:Copper track not

heated long enough. No join.

BAD:Copper track burned

so no current can pass through. No

join.

GETTING YOUR RESISTORS IN THE RIGHT ORDER

Bear in mind – this PCB is shown from the BACK.

Use these colour codes to fill the values on your sheet.

violet

grey

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

R1

R2

R3

R4

R5

R6

R7

R8

R9

R10

R11

VALUENo.red

red red

red

redred

red

brown

brownbrown

brown

brown

brown

brown

blue

orange

orange

orange

orange

orange

orange

orange

orange

orange

orange

violet

black

black

grey

grey

greygreengreen

ELECTRONIC ORGAN RESISTOR CODES

R1

R2

R3

R4

R5

R6

R7

R8

R9

R10

R11

VALUENo.

ELECTRONIC ORGAN RESISTOR CODES

R1

R2

R3

R4

R5

R6

R7

R8

R9

R10

R11

27K

VALUENo.

22K

10K18K15K

15K6.8K

12K12K

10K

82K