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Velleman-Kit K2637 Manual page 3

Super mini 2.5w audio power amplifier

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1. Assembly
(Skipping this can lead to troubles ! )
Ok, so we have your attention. These hints will help you to make this project successful.
Read them carefully.
1.1 Make sure you have the right tools:
• A good quality soldering iron (25-40W) with a
small tip.
• Wipe it often on a wet sponge or cloth, to keep
it clean; then apply solder to the tip, to give it a
wet look. This is called 'thinning' and will protect the tip, and enables you to make good connections. When sol-
der rolls off the tip, it needs cleaning.
• Thin raisin-core solder. Do not use any flux or grease.
• A diagonal cutter to trim excess wires. To avoid injury
when cutting excess leads, hold the lead so they can-
not fly towards the eyes.
• Needle nose pliers, for bending leads, or to hold components in place.
• Small blade and phillips screwdrivers. A basic range is fine.
For some projects, a basic multi-meter is required, or might be
handy
1.2 Assembly Hints :
þ Make sure the skill level matches your experience, to avoid disappointments.
þ Follow the instructions carefully. Read and understand the entire step before you perform each operation.
þ Perform the assembly in the correct order as stated in this manual
þ Position all parts on the PCB (Printed Circuit Board) as shown on the drawings.
þ Values on the circuit diagram are subject to changes.
þ Values in this assembly guide are correct*
þ Use the check-boxes to mark your progress.
þ Please read the included information on safety and customer service
*
Typographical inaccuracies excluded. Always look for possible last minute manual updates, indicated as 'NOTE'
on a separate leaflet.
1.3 Soldering Hints :
Mount the component against the
PCB surface and carefully solder the
leads
Make sure the solder joints are
cone-shaped and shiny
Trim excess leads as close as pos-
sible to the solder joint
3

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