Computer Hardware Help
Articles To Save You From Computer Hardware Nightmares!
Computer Hardware Help Article:
What Is A Crystal? And How To Test It
Testing CrystalCrystals are quite fragile components because of their construction. Unlike a resistor or capacitor, if you drop one on the ground from a decent height, its 50-50 bet whether it will work again. Testing the crystal is not a breeze either. You cannot just take out your trusty multimeter and plug the crystal in it. In fact, there are three right ways to test a crystal: -
(a) Using OscilloscopeA crystal produces a sine wave when excited. It is appropriate then, to see a waveform representative of a sine wave on the clock pins. If the clock is not functioning properly, replace the crystal. In most cases this should solve the problem since microprocessors are usually very reliable. Check the crystal with power on.
(b) Frequency Counter Frequency Counter can be use to check the frequency of the crystal. The reading must be taken when the equipment power is switch "on". Place the probe of frequency counter to the crystal pin and read the measurement. Be sure that your frequency counter meter has the range that is higher than the crystal frequency you are measuring.
(c) Crystal CheckerWith this method, usually the crystal is placed in the feedback network of a transistor oscillator. If it oscillates and the LED is lighten up, this mean that the crystal is working. If the crystal doesn't work, the LED stays off. Instead of using LED, some other crystal checker uses a panel meter to indicate if the crystal is working or not.
Jestine Yong is a electronic repairer and writer. For more information about electronic repair please visit his website at www.noahtec.com
Related Computer News and Articles From ezinearticles
The LTO-3 ultrium technology is backward compatible with previous versions so the users of ultrium-3 can access the LTO-1 and LTO-2 archives. Therefore, the investment made by the enterprise is secured for the future. Maxell ultrium-3 cartridge can be used in all the LTO tape drives of third generation.
Installing a new hard drive is a pretty simple task and the actual install only takes a few minutes to complete. The first thing to be done in this process is purchase the new hard drive and make sure that it is compatible with your system this can be done by consulting your motherboard manual and your operating systems guidelines on what hard drives are compatible.
Computers play a huge role in educating today's generation. With the necessity of knowing how word processors, internet connectivity, and other software applications work, it is almost a requirement for each student to have their own computer at home.
Buying a computer is not an easy decision. There are a lot of factors to consider other than just the price. You have to consider your needs, the specifications of the computer, aesthetics, and a whole lot more. And when you do get to finally decide on a computer, other decisions come into play, such as picking the best computer accessories.
However, as technology advances, the prices for these smaller and more powerful electronic devices drop. While the prices have not fallen significantly enough for the devices to be considered disposable, within time they just may.
You Can Own This Website!
This website is an example of a new product called article site manager developed especially for people who wish to own Adsense sites or sites to promote their own websites and products but do not have the technical ability to own or maintain a website.
Details about this site and other article sites in different categories can be found at the link below. Prices start at $259 for a complete website like this
Related Computer Hardware Articles:
Power Protection in the Home Theater - Use of Surge Suppressors to Guard Expensive Electronic Gear
All home theater equipment should be equipped with at least some form of surge protection. Surge suppressors represent the most basic form of power protection - a first line of defense for all sensitive electronic gear.
Ink Cartridges & Printing - Poor Print Quality Solutions
* Unlikely, but your paper may need changing due to its deterioration due to its age.
Buying a Plasma or LCD TV FAQs
Q: Does the "plasma" in plasma televisions need to be recharged or replaced over time?
A Review of Refurbished HP Laptops
The HP lines are named Pavilion and Omnibook; the Compaq brand offers the Presario laptop at refurbished rates.
Flyback Transformer-How to Locate the ABL Line
From experienced, usually capacitors shortedand resistor turned into high ohms were the caused of the problem. A video pre-amplifiercan also be defective. To confirm whether is circuit or ic problem, just solder out the contrast pin and switch on the monitor. If the monitor display normal picture (contrast ok)then suspect the abl line circuit. If it remainthe same (dim contrast) replace the videopre-amp will usually solve the problem.
This was the first time that laptops sold more than desktop computers in a single month. Indeed, Current Analysis, an innovative research firm headquartered in Sterling, Virginia, confirmed that laptop sales leapt to 53.3 per cent of the total PC retail market in May 2005.
If you are like me, you have probably owned quite a few personal computers. You are sure to have had the occasional problem, and rushed the machine off to the repair shop. At the time, the cost of repairs may have seemed a bit high in proportion to the original cost of the machine, and you might not have been quite sure what was actually done.
What Tablet PCs Can Do for You
There are two main types of tablet PCs: convertible and slate. Convertible tablets look a lot like normal laptops except the screen can be rotated all the way around and laid down flat across the keyboard. You then input information through the screen using a stylus. Slate tablet PCs include only the screen interface - though they are fully integratable with peripherals like keyboards and mouses, the computer itself does not have them. Both types are viable options, depending on your personal preferences and what you'll be using it for.