Application of power transistor

This article we know that about the application of the power transistor in daily life. The transistor is a three-terminal semiconductors device as well as the current controlled device. Here we list out all the most application of the transistor to better understand this topic. A transistor is mainly used to amplify the small electrical signal and it is also useful in the amplifying circuit. So here we sort out the main application of power transistor for you.

• Used in the signal amplifier device
• Used in a digital as well as the analog circuit as a switch
• Used in power regulator and controller
• Used in Cellular phone
• Used in modern electronic IC 
• The microprocessor includes more than billion of the transistor is used in each chip
• Darlington transistor pair is often used in touch alight sensing device 
• The military also used a transistor as high power radio frequency abilities in radar and handheld  radio waves
• In daily life, we have to use a computer, radios, hearing phones which require good sound quality that needs satisfy using a transistor circuit 

Why transistor is used in daily life application?

• High voltage gain
• Require low power supply voltage for operation
• Smaller size 
• No heating problem during operation 
• Solid state device 
• Mechanically so strong
• Easily portable

Advantages and disadvantages of LCD

The Liquified Crystal Display ( LCD ) is a flat panel display, an electronic visual or video display that uses the light-modulating properties of liquid crystals, which do not emit the light directly. LCDs are used in televisions, computer monitors, instrument panels, aircraft cockpit displays, and signage. 

Nowadays LCDs are most commonly used in DVD players, the gaming devices, the clocks, the watches, the calculators, the telephones replaced by Cathode Ray Tube ( CRT ) in most of the applications. LCDs are available in a wider range of screen sizes compare to CRT display and a Plasma display, also they don't use phosphors, and don't suffer image burn-in. Following characteristics of LCDs possess certain advantages, and because of the latest innovation, they also possess some disadvantages too. In this article, you can check out the advantages and disadvantages briefly. 

Advantages of LCD :

• Slim profile
• No radiation emission from the screen
• Better under brighter conditions because of anti-glare technology
• Lighter in weight with respect to screen size
• Energy efficient because of lower power consumption 
• Brightness range is too much wider produce very bright images due to high peak intensity 
• Produce lower electric, magnetic and electromagnetic fields
• Zero geometric distortion 
• Excellent contrast 
• Low flicker rates 
• An image is perfectly sharp at the native resolution of the panel side
• Number of pixels per square inch is typically higher than any other technology or system
• Not prone to screen burn-in
• It has not affected by an increase or decrease in air pressure 

Disadvantages of LCD : 

• Slightly more expensive than CRT 
• Can't act as a portal to another dimension
• Suffer from a motion blur effect 
• High refresh rate
• Like the backlight ages, it can change colors slightly
• The aspect ratio and resolution are fixed
• Not proficient at producing black or very dark grays colors
• Restricted viewing angles 
• Slow response times 

Explore more information:

1. Advantages and disadvantages of CRT
2.  Advantages and disadvantages of DVD
3.  Advantages and disadvantages of Plasma display
4. Advantages and disadvantages of UPS
5. What are the advantages and disadvantages of LCD Tv

GPRS features

Introduction :

GPRS stands for general packet radio service. This technology allows information to be sent back and also for forth across a mobile network. It is an addition to today's circuit-switched the data and also provide short message services. This article gives advanced GPRS features to know more details about GPRS terms. 

Key features of GPRS :

• It overlays on the existing GSM network to provide high-speed data service depending on the which type of coding method is used. It is possible to have a data rate up to 150 kbps with GPRS.

• The GPRS system has the ability to offer a data speed of 14.4  kbps to 171.2 kbps that allow comfortable internet access.

• GPRS supports point to pint packet transfer service and points to multipoint packet service.

• The operator does not have to replace equipment; rather, the GPRS system is added on top of the existing infrastructure.

• GPRS based networks have a high bandwidth.

• GPRS is designed to support a bursty application like email, traffic, telemetry,  telecommunication, broadcast services, and web browsing.

• GPRS offers a fast connection set up the mechanism to offer a perception of being “always on” connection device. Hence GPRS devices are referred to as the "always connected device”.

• The security services provided by GPRS are users Authentication, user access control, user information confidentiality, user identity security.

• GPRS is the packet data score network of 3G systems EDGE and WCDMA.

• GPRS system is independent of the characteristics of the radio channel. GPRS provides the following types of data services like MMS, SMS, WAP

• 
  

Goals of GPRS :

GPRS is the first step toward an end to end wireless infrastructure as well as communication and has the following goals given below :

• Consistent IP services 
• Open architecture
• Same infrastructure for different air interfaces
• Leverage industry investment in IP
• Integrated telephony and internet infrastructure
• Service innovation independent of infrastructure