Equipment Resources

Making a Simple Metal Detector

2008-11-18T03:36:00.000-08:00

Want to known making a simple metal detector? How to find secrets behind this little stuff and turnout to be simple project one can make at home. And You finally understood that metal detector were "Useful" !! Here's the basic principle.

Metal detectors have two oscillators. One is tunable and the other is "Fix" with a loop. Both are "Tuned" at same frequency. Outputs from this two oscillators are then mixed in a mixer which produces only the difference. Means, if both oscillators are at the same frequency, there is nothing heard in the speaker.

To start with, you need to "Zero beat" both oscillators or say "Null" them while keeping your detector in the free air, away from metal objects. Use the tuning control provided for this purpose.

Once this is done, start placing detector around metal objects and you will notice that "Zero beating" is getting disturbed and an audio tone from the speaker is heard. Wow, the detector has found a metal and its working!! Authorized by Nina Gajjar

HP Notebook 6930p with 24-Hour Battery Life

2008-11-10T08:51:00.000-08:00

Hewlett-Packard says it has achieved a mobile-computing milestone by getting the HP EliteBook 6930p to operate continuously for 24 hours on a single battery charge. The laptop used in the test is, however, rather different from those consumers would pick up at the store, at least for now.

The machine's equipped with high-end components including Intel solid-state hard drives (SSDs), a mercury-free LED display, and an optional ultra-capacity battery.

The cream-of-the-crop components played a crucial role in making the 24-hour battery life possible. HP says the Illumi-Lite LED display, by itself, boosts battery run time by up to four hours compared with traditional LCD displays, and the Intel SSD provides up to a 7 percent increase in battery life compared with traditional hard drives. CNET News Article.

HP EliteBook 6930p

5 Sites for Computer Repair Online

2008-11-10T01:22:00.000-08:00

Five sites on internet that offer online computer repair accorcding to google search. keyword ""computer repair online where". Each site offers a little difference product and services with difference motto.

Follow are links of online computer repair :

Pcpinpoint.com : The Only Company That Fixes ALL Computer Problems
Online Computer Repair : IF WE CAN'T FIX IT YOU DON'T PAY!
Online Computer Connection : "Veteran Owned" Nationwide Support Satisfaction Guaranteed
FixFlash.com : Computers Problems? We can fix them right now via the internet
Computer Geeks Online : Your Online Computer Remote Repair Center

What they are offered about online computer repair, click link above.

Where Backup Your Blog Content Online

2008-11-09T20:04:00.000-08:00

Backing up your blog was complicated and tedious. BlogBackupOnline provides a free and valuable resource for every blogger to backup their content online; an effortless way to backup, restore, and export your blog.

BlogBackupOnline will continue to provide a FREEMIUM version for their users. The free FREEMIUM service will include initially 5 MB of storage (It's adequate for most blogs). As well, if you blog about BlogBackupOnline, send the link (to support@techrigy.com) and They will double this backup storage space.

The steps for using the BlogBackupOnline's online Backup Services:

Sign up
Register your blog
Your blogs are automatically backed up daily.

How to Design PCB Fast - ExpressPCB CAD Software

2008-11-09T08:33:00.000-08:00

The ExpressPCB CAD software is very easy to learn and use. For the first time, designing circuit boards is simple for the beginner and efficient for the professional. Best of all, its FREE.

ExpressPCB electronics design software includes two applications, one for drawing schematics, the other for Printed Circuit Board (PCB) layout. Both programs are completely free, fully functional and easily installed with a single InstallShield setup program. They run under Microsoft Windows NT, 2000, XP and Vista.

Version: 6.1.4 February 28, 2008 Size: 9.65 MB

Download ExpressPCB for XP, 2000; NT from West-coast server

Download ExpressPCB for XP, 2000; NT from East-coast server

Download ExpressPCB for Vista from West-coast server

Download ExpressPCB for Vista from East-coast server

Learning to use ExpressPCB CAD software is fast because of its standardized Windows user interface. we suggest that you quickly read our two short Quick Start Guides. Look in the Help menu of the ExpressSCH program for the Quick Start Guide on drawing schematics. For circuit board design, read the Quick Start Guide found with the ExpressPCB program. After spending the few minutes to learn one, the other takes almost no time because it works the same way.

More about ExpressPCB CAD Software

What is a Membrane Switch

2008-11-09T07:43:00.000-08:00

Membrane Switch is not a term that is heard often, but it is something that a lot of people see on a daily basis. Membranes switch panels and overlays are found on keyboards, remote controls, and security alarm keypads. They provide simple labels to give directions to the users about the function of each button.

Typical membrane switches incorporates the following layered components :

Graphic presentation layer
Graphic adhesive layer
Circuit board or PCB layer
Adhesive separator layer
Optional second circuit or PCB layer
Adhesive layer

One thing you should know about membrane switch capabilities is its contribution to the durability of the device it covers. Anything that is touch activated is expected to wear down over time, and membrane switches are no different. But they can be replaced when they begin to look worn, so that the actual electronics will not be exposed.

More about Membrane Switches Technology

How Copier Machine Works

2008-11-08T22:51:00.000-08:00

Xerographic and Electrostatic are two main types of copy machines. Both use the same process to make a copy but they each do it in a slightly different way. When you place a page on a copier machine and press the start button the copier starts by using a series of mirrors and lenses to project an image of the page onto the side of a rotating tube.

In a xerographic copier machine, this tube is light sensitive. The picture that is projected onto the tube causes electrostatic charge to collect on the tube in a pattern that matches the page that you are copying. The tube is then coated with a dust called toner which sticks to the charged parts of the tube. A piece of paper is then pressed against the tube and the toner is transferred to the paper. The paper now has a dark image of the original page. This paper is then heated to bake the toner and the copying is done.

This is the same process that an electrostatic copier machine uses except that instead of a light sensitive tube, light sensitive paper is used. The image is projected directly onto the paper which produces a pattern of charge, is coated with toner and baked to produce a final copy.

More about copier machine

How Fax Machine Works

2008-11-08T20:53:00.000-08:00

Fax or Facsimile Transmission, communications system for the electrical transmission of printed material, photographs, or drawings. It is accomplished by radio, telephone, or undersea cable. The essential parts of a fax machine system are a transmitting device that translates the graphic material into electrical impulses according to a set pattern, and a synchronized receiving device that retranslates these impulses and prints a facsimile copy.

In a typical system the fax machine scanner consists of a rotating cylinder, a source projecting a narrow beam of light, and a photoelectric cell. The copy to be transmitted is wrapped around the cylinder and is scanned by the light beam, which moves along the cylinder as it revolves.

The output of the photoelectric cell is amplified and transmitted to the receiving end, where a similar cylinder, covered with specially impregnated paper, revolves in synchronism with the transmitting cylinder. A light of varying intensity moves along the rotation cylinder and darkens the paper by chemically reproducing the pattern of the original. It's a way of the fax machine work.

More about Fax Machine Support

Privacy Policy

2008-11-08T13:58:00.000-08:00

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Our Commitment To Data Security

To prevent unauthorized access, maintain data accuracy, and ensure the correct use of information, we have put in place appropriate physical, electronic, and managerial procedures to safeguard and secure the information we collect online.

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Protecting the privacy of the very young is especially important. For that reason, we never collect or maintain information at our website from those we actually know are under 18, and no part of our website is structured to attract anyone under 18. Under our Terms of Service, children under 18 are no allowed to access our service.

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