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Anonymous
ANSWERS: 4
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Though I am not a professional, I would say yes. Static electricity can cause permanent damage to integrated circuits. For the few bucks an anti static wristband costs, why take the chance? Use is pretty simple, put it on your wrist and clip the attached lead to a good ground connection on the unit being repaired.
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Yes you can, but there are also other methods. Having an anti static mat on your work surface and grounded works just as well and doesn't "tie" you to the project. I have both methods, but prefer the latter as it give a little more freedom of movement and those wrist staps always have a tendency to become unclipped or caught on something. In any event, having some method of static control is important. Believe it or not, it takes only a static discharge that you could barely detect, to smoke an ICB.
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yes
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With the advent of high-impedance low-current devices (work fast use little power), it was discovered that static charges that built up on your skin could damage the devices. The way to protect them is to either first discharge any static that may have built up before handling them, or to prevent static from building up in the first place. Grounding straps you wear serve both purposes (so long as you put them on before you handle the components). Grounding straps do not tie you directly to ground, but actually have a resister inside so that any charges you may have built up are slowly dissipated rather than create a rapid discharge (spark) when you first put them on or touch something that is already charged, and also so that if you touch something with a high voltage you are less likely to get electrocuted through the strap. Hope this helps..
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