Electrical and electronic devices,110 vs 220 volt, NTSC and PAL

In case you want to buy any Electronic/ Electrical/ Cellular phone system for the purpose of Indian use, consider the following points?
There is a difference in Electricity and Video technology in both the countries, following table summaries the difference:

Though there are systems available which works in both the countries, such systems are known as Multi System. For example multi system VCR, multi system TV. Such devices have an in-built converter to take care of such things, which you can set according to the country. There are shops which keep such systems which work in India.

Or alternatively, you can buy convertors which are available separately in almost all the Electronic stores. They convert one kind of video signals (NTSC) to other (PAL) for TV/ VCRs/ Camcorders.

Few systems like Telephone instruments, and Musical Keyboards etc. can work as it is, by only changing the power adapter according to the country. For example, if you have a Cordless Telephone System which uses xDc output in US, can work in India with a 220 volt and x DC output adapter.

Since Mobile phones technology is different, hence can't be used at other places. If at all you want to buy a cell phone to use in India, you should buy a GSM/ 900 phone, which are available in few electronic stores..

Following technical Questions might be helpful.

What is the difference in NTSC and PAL system?

NTSC stands for National Television System Committee. NTSC runs on 525 lines/frame.
PAL (Phase Alternating Line), runs on 625 lines/ frame. PAL is most popular in European countries, except for France. The PAL standard utilizes a wider channel bandwidth than NTSC, which allows for better picture quality.

Why can't a DVD CD bought in US, work on Indian DVD Player?

To protect DVD copyrighting, a special encoding has been introduced on DVD players.

The world DVD market is divided into 6 regions. In any single region, you can only use machines and discs made for that region. If you try to use a disc from one region with a DVD drive or player from another, you'll get an error. Here is the breakdown:

** Buy the multi system code free DVDs, which works across the countries.

What is a DVD, and Why its output is better?

DVD (Digital Versatile Disc) output allows you to take the advantage of picture quality to the fullest extent of your television or monitor. Most full-length movies will fit on one side of a DVD, with up to 500 lines of resolution (compared to VHS' 250) and multi channel audio.

Why some DVD players are much more expensive than others?

The more expensive players offer faster processing, which gives you smooth fast-forward and reverse search, and faster menu response. Some even have separate optical pickups for playing DVDs and CDs, which are suppose to give you better sound.

What are the other technical factors which are useful in understanding DVD players?

According to the DVD specs, all NTSC DVD players have an internal Dolby Digital decoder, but in most cases this decoder only outputs stereo (two-channel) audio. If you want multi channel sound, you can plug a digital connector into an external decoder to get more channels.
Some of the more expensive players have a full internal 5.1-channel Dolby Digital decoder, too. If you have one of these player, you don't need to invest in a Dolby Digital processor, but you do need a processor that will accept multi channel inputs. However, keep in mind that you don't want your DVD players internal decoder to be the only Dolby Digital in your system. Somewhere down the line you'll want a Dolby Digital receiver to take care of processing for other digital sources, such as HDTV. PAL/ NTSC 525/60 (NTSC) or 625/50 (PAL/ SECAM).
Some players will only play NTSC discs, some will only play PAL discs, and some will play both. To play PAL DVD's you need a multi-system code free DVD.