MAINTENANCE OF COMPUTER SYSTEM:

A few factors endanger the PC’s health.

  • Dust
  • Excessive heat
  • Magnetism
  • Stray electromagnetism
  • Power surges, incorrect line voltage, and power outages

HEAT AND THERMAL SHOCK:

You can help your PC’s heat problem in two ways:

  • You can install an adequate fan in the power supply or add an auxiliary fan.
  • You can run the PC in a safe-temperature range.

REMOVING HEAT WITH A FAN:

Some computers like most laptops, don’t require a fan, as enough heat dissipate from the main circuit board all by itself. But most desktops and tower PCs will surely fail without a fan. The more stuff that’s in PC, the hotter it runs. The things that make PCs hot inside include:

  • Chips, memory chips and CPUs in particular, as they have the most transistors inside them.
  • Drive motors in hard drives, floppies, and CD-ROM.
  • Some circuits boards can run quite hot, depending on how they are designed.

REMOVING HEAT WITH A HEAT SINK:

A heat sink is a small piece of metal, usually iron or copper, with fins on it. The heat sink is glued or clamped to the chip. The idea is that the heat sink pulls the heat off and the fan disperses it.

SAFE TEMPERATURE RANGES FOR PCs:

Electronic components have a temperature range within which they are built to work. IBM suggests that the PC, for instance, is built to work in the range of 60 to 85 degrees F. This is the because the circuit boards can run as hot as 125 degrees, but a typical machine may, again, be as much as 40 degrees hotter inside than outside and 125 minus 40 yield 85 degrees, the suggested maximum temperature.

DUTY CYCLES:

Duty cycle is used to describe active versus inactive time for many kinds of devices, although it is (strictly speaking) not correct. Some desktop laser printers, for example, will not run well if required to print continuously.

THERMAL SHOCK:

A PC is warmer inside than outside, changes in room temperature can become multiplied inside a PC. This leads to a problem called thermal shock. Thermal shocks come from subjecting components.

 

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