Electronic tools and their uses are described. Solder is used to join electronic components to circuit boards, with 22 gauge typically used. It contains flux to clean metal surfaces as it melts. Multimeters can measure voltage, current, and resistance in circuits. They have multiple ranges and can test AC or DC. Both analog and digital multimeters are discussed, with digital being less likely to impact the circuit being tested due to their high input impedance.

1. THE MIDDLE TEST
OF ENGLISH II
ARDIANSYAH
2B D3 TEKNIK LISTRIK
2001031039

2. TOPIC:
ELECTRONICS TOOLS
MATERIALS AND
DESCRIPTION

3. INTRODUCTION/OPENING
• Electronic tool means any software, system, electronic functionality or
service, including interactive devices, internet capability, functionality, site or
service hardware, cevice or communications facility

4. CONTENT
SOLDER
• solder is using to joint the electronic component to pcb
• The best size of solder for electronics is 22 swg (swg = standard wire gauge).
Thicker solder (such as 18swg) can be used for larger contacts on switches
and other parts but it requires more care when used for finer work on
stripboard and most PCB joints.

5. • Solder for electronics use contains tiny cores of flux, like the wires inside a
mains flex. The flux is corrosive, like an acid, and it cleans the metal surfaces
as the solder melts. This is why you must melt the solder actually on the joint,
not on the iron tip. Without flux most joints would fail because metals
quickly oxidise and the solder it self will not flow properly onto a dirty,
oxidised, metal surface.
• For general electronics work the best type of soldering iron is one powered
by mains electricity (230V in the UK), it should have a heatproof silicone
cable for safety. The iron's power rating should be 15 till 25W and it should
be fitted with a small bit of 2 till 3 mm diameter.
• Always wash your hands after using solder, this is especially important
with traditional solder because it contains lead which is toxic.

6. Equipment
• Soldering stand
You must have a safe place to put the soldering iron when you are not holding
it. The stand should include a sponge which can be dampened for cleaning the
tip of the iron.
• Desoldering pump (solder sucker)
For desoldering a joint to correct a mistake or replace a component. An ESD
nozzle prevents damage to ICs which can be damaged by static electricity.

7. • lead-free solder

8. Multimeter
• Multimeters are very useful test instruments. By operating a multi-position
switch on the meter they can be quickly and easily set to be a voltmeter,
an ammeter or an ohmmeter. They have several settings, called 'ranges', for
each type of meter and the choice of measuring AC or DC.
• Some multimeters have additional features such as transistor testing and
ranges for measuring capacitance and frequency.

9. • Analogue meters
• Analogue meters take a little power from the circuit under test to operate
their pointer. They must have a high sensitivity of at least 20k volt or they
may upset their circuit under test and give an incorrect reading
• Batteries inside the meter provide power for the resistance ranges, they will
last several years but you should avoid leaving the meter set to a resistance
range in case the lead touch accidentally and run the battery flat.

10. • Digital meters
• All digital meters contain battery to power the display, so they use virtually
no power from the circuit under test.
• This means that on their DC voltage ranges have a very high resistance
(usually called input impedance) of 1M or more, and they are very unlikely to
affect the circuit under test

11. CLOSING
• Many electronics tool not explain yet, and I think two electronics tool before,
solder and multimeter are the most important tool in the electronic.
• And cause the time is limited, I think enough.