Mastech Multimeter MS8264 (Manual 30-Range + Temperature)

January 31, 2012 web Measurement Tool

The MS8264 is a newly released model from Mastech and there is no full review available yet. Here is a short summary of the product:

Mastech’s MS8264 is a 30-range (manual) digital multimeter with a full range of features including all the usual functionality and then some; AC/DC Voltage and Current, Capacitance, Resistance, Frequency, Temperature and other features. In short it can be considered an entry-level professional model or a proper product for hobbyists and DIY’ers.

It’s also highly affordable considering the feature set, which also includes back lighting, data hold and a resettable fuse instead of the regular replaceable fuse that renders the unit useless in case you don’t have a spare on hand. It also comes with test leads that have capped tips and shrouded plugs, a K-Type Temperature probe and a multi-functional socket. A 9V battery is pre-installed and it naturally comes with a user manual.

Features:

Conforms to the IEC1010-1 standard CAT III 600V and CAT II 1000V
SMT application
Display: 1999 counts
Automatic indication of functions and symbols
Diode test
Continuity test
Auto power off
Resettable fuse inside
Data hold
Back light

Specifications:

DC Voltage: 200m/2V/20V/200V±0.5%, 1000V±0.8%
AC Voltage: 2V/20V/200V±0.8%, 750V±1.2%
DC Current: 20mA±0.8%, 200mA±1.5%, 10A±2.0%
AC Vurrent: 2mA±1.0%, 200mA±1.8%, 10A±3.0%
Resistance: 200/2k/20k/200k/2MΩ±0.8%, 20MΩ±1.0%, 200MΩ±5.0%
Capacitance: 20n/200n/2μ/20μF±4.0%
Frequency: 20kHz±1.5%
Temperature: -20°C ~ 1000°C
hFE: 1~1000

Features:

Conform to the IEC1010-1 standard CAT III 600V and CAT II 1000V
SMT application.Display: 1999 counts.Data hold .Back light
Automatic indication of functions and symbols .Diode test.
Continuity test.Auto power off.Resettable fuse inside.
Temperature: -20°C ~ 1000°C

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Security IP Cameras Can Be Seen Everywhere

January 31, 2012 admin Camera & Photo

Nowadays, you can see security camera everywhere like the hustle and bustle streets, crowed stores, quiet road, even some home yards. When human being enters the industrial era, problems and issues flood and become more complex.

When we refer to the bank, people are easy to think of the surveillance cameras and safeguards wandering around. There is still certain bravery to take money from the bank under the surveillance. Money is always enchanted and the ever topic. Here shows you the video security camera for bank use. In the bank, there are more than one security cameras. To be exactly,there is one video camera in each corner and the important place. In this way, all the images can be recorded clearly. Andall of the cameras are working together all the time even though nobody is there. Usually we can see that there is a big screen that displays all the sceneries from different angles and corners. This is known as a panning room. Another potential criminal place is around the ATM. There are equipped with the security camera, too. Places with money are indispensible to add more security camera to keep close watch with the atmosphere around.

The supermarket is the place that welcomes video camera. Frequently, supermarket is the place spammed with people. It is difficult to watch some shoplifters. Video security camera does a great favor to reduce the heavy load of artificial observation. It saves more manpower and material resources. Other places like shopping malls, department stores and so on are the same situation. They prefer the surveillance camera. In the public place where are flowed by people, they are usually equipped with security video for the sake of safety.

As to some home yard, it is not rare to see that security camera is on duty. For some villas and high-class apartments, they are all under the suspect of the security camera. Some give it a vivid name the electronic eye. For the one reason, it is not expensive to purchase one. Another one is that the insecurity society. It is available to make full use of this gadget to safeguard our life.

After all, all the gadgets can be accessible for most people. Then you can see the video security camera everywhere. The prevailing is due to the broad application and accessibility. More items can be seen at ChargerBuy.com.

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Shop on the Internet for Electronics for Christmas Gift

December 1, 2011 admin Business Profile Article

HisGadget.com – Your online shopping superstore for Consumer Electronics & Gadgets. Comparison shopping for the best price.

Want to find Electronics Gift & Gadget? Want to find Hot Price Offer? This year, in the thick of the holiday season, HisGadget.com is dedicated to helping you find creative gift ideas.

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Laptop LCD Screens Quality -Easy to Take

November 20, 2011 web LCD Screen Panle

It is easy to take the quality of LCD screen for granted. But when you consider that you probably spend more time using your LCD monitor than any other component of your PC, you realize that the screen you stare at every day is a vital part of your computer system. What differentiates one LCD from another is image quality. Such parameters as, text readability, sharpness, grayscale range, color quality, or image uniformity are important. However, the most important tool (diagnostic equipment) to evaluate the quality of LCD screen is the human eye.

The variables, such as, the light source, the viewing angle, and the system’s graphics card can have a dramatic effect on an LCD’s performance. Make sure that a display is adjusted to perform optimally, based on the manufacturer-recommended or default settings when possible.

laptop lcd screen

LCD screens often have trouble reproducing all of the levels of the grayscale (the range of grays between true black and true white). When producing a bright white image, many LCD screens oversaturate the grayscale: the lightest grays of the scale are lost in the white background. Oversaturation can also lead to loss of color range – a poor color reproduction of an LCD screen at the brightest end of the scale, closest to white. A color-tracking error occurs when the intensity of red, green, and blue (RGB) does not adjust identically with signal-level changes for LCD screen. This lack of balance between the RGB channels affects color as well as grayscale, but it is most easily identified as a shift in color within shades of gray.

Perfectly uniform backlighting across an LCD’s entire display surface is difficult to achieve. It is not uncommon for an LCD to have bright or dim patches or subtler variations in color intensity, which give the appearance of shading across the screen, or variable color intensity on the LCD display. Additionally, using a dark screen is the easiest way to spot glare and reflection problems, both of which can have distracting effects when you’re viewing an LCD screen.

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Correct Backlight Type For Your New Screen

November 14, 2011 web LCD Screen Panle

All laptops in late 2010 use LCD screens:

LCD screens require a backlight system to operate, there are two backlight systems in use today: CCFL and LED

CCFL – Cold Cathode Fluorescent Light, is an older backlight method, which utilizes a daylight specter fluorescent tube and an inverter which powers it.

LED – is a newer backlighting system which does not use an inverter, and instead of a fluorescent tube it uses a strip of LEDs (Light Emitting Diodes).

So in essence there two types of laptop screens: LCD-CCFL and LCD-LED: these screens are NOT INTERCHANGEABLE.

Laptop manufacturers tailor their system for a particular LCD screen, so it is impossible to install a CCFL screen into a computer outfitted for an LED screen, and vice-versa.

The replacement screen must have exactly the same backlight type as the original (old) screen. Currently there are 2 major types of backlight for notebook LCD screens:

1. CCFL (Cold cathode fluorescent lamp)
a) 1-CCFL – contains 1 bulb
b) 2-CCFL – contains 2 bulbs

2. LED (Light emitting diode)

IMPORTANT! CCFL and LED screens are NOT interchangeable!
The CCFL backlight screens always need a high voltage inverter to power the bulb inside the screen. The LED screens use light emitting diodes to light up the screen. Most of the LED screens today require an inverter as well and the inverters of the two types are completely different. Inverters of the LED screens are attached to the bottom of the screen.

One CCFL (also known as “single backlight”) – has been and still is the most popular backlight type in laptop screens. The screen contains one bulb to light it up and has a pair of wires at the bottom finished with one white inverter connector that plugs into inverter board.
See the picture right below:
laptop screen single backlightLCD screen with single CCFL backlight ( CCFL 1-Bulb )

Two CCFL (also known as “dual backlight”) – contains 2 bulbs, has 2 pairs of inverter cables and 2 inverter connectors. This type of backlight is less popular than 1-CCFL and is used in laptop screens of size 15.4-inch and larger.
See the next picture:
laptop screen dual backlightsLCD screen with dual CCFL backlight ( CCFL 2-Bulb )

LED is the new type of backlight which allows the screen to consume less power (which equals longer battery life), does not heat up as much as CCFL based screen, and is thinner and lighter. In LED screens backlight power is supplied in one of three ways: through video connection, through a flat ribbon cable or through an attached inverter. Also note that in LED screens of different resolutions the video connector can be entirely different.
led laptop screenLCD screen with LED backlight ( Backlight Type: LED )

It is usually mentioned in the laptop specifications when the laptop screen has LED backlight.
To determine which backlight type screen is in your laptop you can remove and examine the screen – this is the best way. Alternatively you can check your laptop manual, check specifications online at your laptop manufacturer’s Support section, or contact your laptop manufacturer.
LED screen can never be used to replace a CCFL screen.
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Instructions For Measuring Laptop Screen Size

November 10, 2011 web LCD Screen Panle

Important Note!
It is absolutely necessary to know the SIZE, RESOLUTION and BACKLIGHT TYPE in order to purchase the correct laptop screen.

Certain laptop models come in different screen sizes. For instance, IBM-Lenovo ThinkPad T60 was released with either 15.4″ or 15″ or 14.1″ screen size and these screens are not interchangeable.

It is absolutely imperative that size, resolution and backlight of the original screen are the same as of the selected screen for purchase.

Below are instructions for Measuring laptop screen size

Screen size is measured in inches, diagonally from corner to corner (see below) (1 inch=2.54 cm):

laptop Screen size-2Laptop screens come in many different sizes with new ones being constantly added. Below you can see the most popular ones.

laptop screen size

 

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Plan Now for Thanksgiving- Hot Price & Savings

November 7, 2011 admin Business Profile Article

HisGadget.com – Your online shopping superstore for Consumer Electronics & Gadgets.

Want to find Hot Price Offer? HisGadget.com is kicking off two weeks of savings, typically reserved only for the Thanksgiving, on this seasons’ must-have holiday gifts, including the strongest “hot price” guarantee in the market.

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Ways of Finding Your Screen Resolution

November 4, 2011 web LCD Screen Panle

Laptop screen resolution is measured in horizontal and vertical pixels (ex.: 1024 x 768).
It is important to confirm the screen resolution before submitting an order: the same laptop model can come with different display resolutions.

If a laptop you are ordering a screen for works – turn it on and:

- go to On-line Resolution Check

OR

- for Windows XP, Windows 2000, Windows ME, Windows 98: Right-Click on Desktop -> Properties -> then in Display Properties navigate to Settings
- for Windows Vista and Windows 7: Right-Click on Desktop -> Personalize -> Graphics Options

If a laptop you ordering a screen for is not functional:

- we recommend to pull your defective screen out and google screen model for specifications. You can find the screen model number on the sticker on the back of the screen.

OR

- check your laptop manual under the laptop specifications section if you have one.

OR

- also you may be able to find you laptop specifications on manufacturers website using the laptop serial number, service tag or the model number (in Support section).

One way or another you are looking for something like this (list of known laptop screens resolutions as of April 2011):
Letters on the right are the common abbreviations and can be used as resolution indicators.

2048×1536 (QXGA)
1920×1200 (WUXGA)
1920×1080 (WUXGA) Full HD
1680×1050 (WSXGA+)
1680×945 (WSXGA+)
1680×900 (WSXGA+)
1600×900 (WXGA++) HD+
1600×1200 (UXGA)
1440×960 (WXGA+)
1440×900 (WXGA+)
1400×1050 (SXGA)
1366X768 (WXGA) HD
1280×1024 (SXGA)
1280×720 (SD+)
1280×854 (WXGA)
1280×800 (WXGA)
1280×768 (WXGA)
1152×768 (WXGA)
1024×768 (XGA)
1024 x 600 (WSVGA)
1024 x 576 (WSVGA)
800 x 600 (SVGA, outdated)
640 x 480 (VGA, outdated)

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Knowing the separate components of your laptop’s power supply

November 3, 2011 admin AC Adapter Charger

The first thing that you need to consider when you are looking at your power supply is the power strip that you plug into the wall. This will help regulate the amount of power that goes into your computer and prevent potentially fatal power spikes. Many people think that they can skip this component of their laptop power supply, but once they lose a valuable electronic device due to a power surge, they often never go without.

The next thing in line is the AC power adapter. This is another point that helps regulate the amount of power going into your computer. It will also convert the alternating current from your wall socket and turn it into direct current that your computer will use to power the laptop as well as to charge the battery.

The other well-known name for an AC Power Adapter is battery charger or laptop battery charger. This is an important device providing you with laptop mobility and frees you of restriction from using the power cord. Check the link at the end of this article to find the correct AC Power Adapter for your laptop.

Once the power enters your laptop through the female adapter, the point at which your power cord ends and your laptop begins, the power is routed to the computer power board. This piece of hardware serves two functions: one to send power to the mother board; and two to send power to your battery for charging.

Another often overlooked piece of hardware that is part of your laptops power supply is the computer cooling fan. The cooling fan makes sure that your computer doesn’t overheat. Overheating problems will cause your computer to power off at odd times. The processor for your computer is usually the element that will generate the most heat in your computer so if you ever decide to get a stronger processor, it is very important that you check and make sure that the computer cooling fan you have installed in your laptop is strong enough to properly cool your laptop.

See more information on http://www.hisgadget.com

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Matte and Glossy Screen Finish: Almost The Same and Interchangeable

November 2, 2011 admin LCD Screen Panle

Glossy and matte screens are interchangeable, it is only up to your personal preferences which one to pick.

The picture below illustrates the physical dissimilarities between the glossy and the matte screens installed on the same laptop:

Laptop screens with glossy and matte screens are entirely interchangeable since the difference lies only in the type of the screen surface finish.

Conventionally, laptop screens have had a matte, anti-glare finish, to scatter the reflected light. This characteristic, however, has a number of side effects, which include scattering the light from the display and increasing the blur. Additionally, it results in reduction of the contrast ratio, color intensity, and viewing angle.

Glossy screens use optical coating to reduce the amount of reflected external light. Their shiny surfaces reflect more light than matte displays, but they are less reflective than the uncoated glossy displays; reflections of external light sources are not diffused by glossy displays, so certain lighting conditions tend to favor a traditional, anti-glare screen. In controlled environments, such as darkened rooms, or rooms where all light sources are diffused, a glossy display may be more enjoyable for the viewer.

Glossy displays generate increasingly saturated colors, deeper blacks, brighter whites, and sharper images. This makes these types of displays more appropriate for general public use, which commonly uses laptops for viewing photos, watching movies, or browsing the web.

As a side note, in extremely bright conditions, where no direct light is facing the screen, such as outdoors, glossy displays can become more readable than matte displays due to their ability not to disperse the light around the screen.

PS: Alternative glossy screen names by manufacturer

Each laptop manufacturer coined their glossy type screen monicker:

Acer – CrystalBrite
Acorn – Vybrio
AG Neovo – NeoV Optical Filter
Ahtec – Glare
Alienware – ClearView
Apple – Glossy
ASUS – ColorShine
Averatec – AveraBrite
Dell – TrueLife
Everex – DiamondBrite
Fujitsu – CrystalView, SuperFine
Gateway – UltraBrite
HP-Compaq BrightView
IBM-Lenovo VibrantView
LG – FineBrite
NEC OptiClear, SuperShine
Packard Bell – Diamond View
Sager – Super Clear
SONY – XBRITE, XBRITE-ECO, X-black, ClearBright, ClearPhoto LCD
Toshiba – Clear SuperView

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