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Introduction to Sensors - PowerPoint PPT Presentation


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Introduction to Sensors . Soldering and Safety Tips. Basic Soldering Tips. Heat Wire with Iron Let Wire Melt Solder (where possible). How to make the perfect solder joint. All parts must be clean from dirt and grease Try to secure the work firmly

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Presentation Transcript
slide1

Introduction to Sensors

Soldering and Safety Tips

slide2

Basic Soldering Tips

  • Heat Wire with Iron
  • Let Wire Melt Solder (where possible)
slide3

How to make the perfect solder joint

  • All parts must be clean from dirt and grease
  • Try to secure the work firmly
  • "Tin" the iron tip with a small amount of solder (Do this immediately with new tips being used for the first time)
  • Clean the tip of the hot soldering iron on a damp sponge
  • Helps to add a small amount of fresh solder to the cleansed tip
  • Heat all parts of the joint with the iron for under a second or so
  • Continue heating, then apply sufficient solder only, to form an adequate joint
  • Remove and return the iron safely to its stand
  • This should only take 2-3 seconds at most to solder the average P.C.B. joint
  • Do not move parts until the solder has cooled
slide4

Troubleshooting Guide

  • Solder won't "take" - grease or dirt present - desolder and clean up the parts. Or, material may not be suitable for soldering with lead / tin solder
  • Joint is crystalline or grainy-looking - has been moved before being allowed to cool, or joint was not heated adequately - too small an iron / too large a joint
  • Solder joint forms a "spike" - probably overheated, burning away the flux
slide5

First Aid

  • In the unlucky even of burns which require treatment, follow these steps:
    • Immediately cool the affected area with cold running water, ice, or even frozen peas for ten minutes
    • Remove any rings etc. before swelling starts
    • Apply a sterile dressing to protect against infection
    • Do not apply lotions, ointments, etc, nor prick any blisters which form later
    • Seek professional medical advice where necessary