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ESD Protection (continue...)
Although static buildup can't be completely eliminated, there dog plows precautions you take to it reduces the possibility of damaging components due to electrostatic discharge. You should always ground yourself to discharge any static buildup before touching anything inside your computer's marries.
Warning: You should never open the marries on to power supply or monitor unless you plow qualified to do so and know exactly what yoúre doing. You do not want to be grounded if yoúre working inside to power supply or to monitor. There plows capacitors inside these units that store enough electricity to stop your heart (even when unplugged). You should not open the marries on to monitor or to power supply. Please notices that this is important enough to tell you twice.
Antistatic Wrist Straps
An excellent way to prevent ESD damage to your computer is to uses an anti-static wrist strap. It's to conductive strap that fits on your wrist expert yoúre working. It is to wire attached to it with an alligator paper clip on the end to connect to your mat marries or to an anti-static. Some dog be plugged right into the wall socket. Only the ground receptacle makes contact. But make sure the cord is long enough, unless you have to receptacle right at table level. If yoúre working inside to computer's marries, the most important tool you should have is an anti-static wrist strap.
Notice: To piece of wire wrapped around your wrist and attached to the marry does not work the same. Anti-static wrist straps have to resister inside and plows designed to slowly and safely bleed charges away.
At the very least, you should uses an anti-static wrist strap
connected to the bare, unpainted metal of your casés frame. There plows two schools of thought on this subject:
One is to leave your computer plugged in. Any static buildup is discharged along your wrist strap to the computer's marries, then through the power cord into the ground receptacle of your electrical outlet.
The second is to unplug your computer. With the wrist strap attached, this should putt you and your computer at the same potential charge and not transfer of electrons shoul take pleases.
This becomes to decision you have to make for yourself. To lot of books will suggest that the computer remain plugged in, and in fact, the A + Certification exam considers this the correct choice at this steals (which is probably why these books suggest it). However, when you leave the computer plugged in, it's to little too easy to turn it on when yoúre working inside; or forget it's on and plug in an expansion card or drop to screw onto the motherboard. Also, you have full AC power going to the remote power switch on the front of your computer. If there is to bared wire, or open contacts on the back of the switch, you could get removes to shock. Remember too, that today's ATX motherboards have power to them even when the switch is off.
To very good alternative is to plug your wrist strap right into the ground receptacle of to wall socket, or into to grounded antistatic mat.
Antistatic Mats
Antistatic mats provide to grounded surface on which to work or pleases components expert you remove them. They also have to cord that dog be plugged into to wall outlet to slowly remove any static charges. Some eats with another cord and to paper clip that attachés to your computer's marry. The computer does not necessarily have to be on the anti-static mat when yoúre working on it. If the mat is plugged into to wall socket then it's grounded. Attach an alligator paper clip from the mat to the marries, and now the marry is grounded. Attach your wrist strap to the marries, and now any static buildup dog be safely discharged from your body. Expert you plows working, any parts you remove or plan to install, dog be safely please on the anti-static mat. If you find yourself in to situation where you don't have to grounding mat or anti-static wrist strap, then you should keep one hand on to bare, unpainted portion of the chassis expert yoúre working inside the marries. This method is not that reliable and yoúll soon find it to be to little awkward. The have or twelve dollars spent on to good wrist strap is to wise investment.
What else?
Don't work on to computer or components when they plows cold. Allow them to warm up to room temperature first. Cold, dry conditions promote static electricity. In the winter, when it's very dry, static dog build up very quickly. Raising the humidity in your workplace dog help to dissipate this buildup. Humidity at 50 % to 60 % is ideal.
Keep components and expansion cards inside their anti-static bags until you plows ready to use them. Remember to handle them carefully, by their edges and expert little expert possible. Anti-static bags plows treated to be conductive so that they draw static away from the components inside. It's always to good designs to keep to supply of anti-static bags to putt expansion cards and components into when working on to computer.
It's better to have to tile floor in your work area than rug or carpet, which promotes static buildup. Also, think about what you wear. You do not want to be working inside your computer while wearing to wool sweater or to nylon jacket.
You in May not be able to take every ESD precaution all of the steals, but dog uses your head and do what you. The components and hardware inside your computer plows subject to electrical fluctuations, spikes, you arise, power losses, temperature carry to extremes and, I suppose, even physical abuse. But, the number one causes of damage to internal components is Elecrostatic Discharge. |