when the system of 110 volts is in vogue in USA and other countries why not in india
216461
My understanding of the 110 volt thing is it was instituted as a (bogus) safety measure in the US and Canada. 220 is better, and cheaper.
132046
A large part of their success, specially India, is due to outsourcing by the United States.  During the 1980's and 1990's companies spent huge sums of money laying fiber optic cable under the Atlantic Ocean and elsewhere.  They anticipated huge demands for broadband.  The demands never quite materialized, and countries like India took advantage of very cheap international communications to set up call centers to handle a range of services from tech support, to accounting to data storage and tedious programming.  Given their cheaper labor rates, it made sense for American companies to outsource work to them.  They were prepared for all of this because they anticipated it and had trained huge numbers of scientist and engineers in comparison to the U.S. An example of the result of all of this is the fact that in 2005, there were over 245,000 Indians answering phones from all over the world or dialing out to solicit people for credit cards or cell phone bargains or overdue bills! Bangalor is one of the cities that has flourished from this new economy.  The Indians are taking English courses, including accents and regional speech.  Soon, you won't be able to tell that you are talking to an Indian. Right now there is a fast food restaurant in Colorado that is routing drive-up orders to a call center in India that processes the order and sends it back to the kitchen.  This cuts about 15 seconds from the time it takes to drive up to the time you leave with your order!  The 15 seconds translates to big money for the restaurant.
616700
hi,nice idea but it posible in india?if u give idea to U.S people they tried these..things.in india u said cell phone what ever tools that govment need it may corrupt.they buy Rs 10 item to 1000.if ur implemented these the system will work  only two days becouse after these mechinary not working properly due to worest of meterial. these system are sutable for rich countries..we have 110 crores of population  data crash  in data bank.\n\nend the correption ?change people mind set not system
549048
because there are a number of issues that have to be resolved.  First of all - electricity is an expensive source of energy as compared to gasoline.  Next you have the performance issues that come with battery and hybrid cars.  Also you have the reliability and life-expectancy issues of the batteries.  (Pay $4,000 every four to five years to replace the batteries.)\n\nAnd finally you have the cost vs. benefit ratio from the consumer's viewpoint.  The fact of the matter is that the added expenses associated with a hybrid car are more than the cost of the gasoline you save with that car.
54657
I happen to be reading a New York Times bestseller called "The World Is Flat" by Thomas Friedman. One thing he talks about is India's emergence as a major source of educated workers mixed with a solid work ethic (of course, he goes into much more detail, including quotes from Indian businessmen running companies with all sorts of ties to the West). \n\nHowever, he does point out that India's infrastructure (power grid, etc) greatly needs to be improved to make a further leap.
11001
well, these systems are different for historical reasons - something was decided on as a standard in one part of the world and something else, at the same time, in a different part of the world.  it's just like driving on the right vs. left.. they're different, and incompatible, and it's a massive pain in the rectum.\n\nbut like driving, changing either system over to the other requires overcoming a massive amount of social inertia and a huge infrastructure cost - everyone would have to replace their appliances/cars, power-distribution systems/traffic signals would all have to be replaced.  and because of the nature of these systems, you cannot "phase in" a change - it would all have to switch at the same time in one ugly go.\n\nfunctionally there is no real difference in using 50 or 60 hz.  \n\nhowever, a different voltage has its advantages and disadvantages.  240V distribution is considerably less safe than 120V - get across 120V and you can be electrocuted for sure, but it's far far more dangerous to be electrocuted by 240V.  so safety is one factor that favors a lower voltage.\n\non the other hand, for a fixed requirement of energy usage, a higher voltage will require a lower current.  this is easy to see if you look at the equation for power in an electric circuit, P = VI.  double the voltage and you halve the current.  \n\nthey tell you not to plug a lot of energy-hungry appliances into a single outlet because doing so increases the amount of current that flows through your household wiring - too much can cause the wire to get hot and melt, possibly starting a fire and certainly causing costly damage.  so a higher voltage power distribution system will be generally cheaper (less current = smaller wires = less material costs - this is part of the reason that long-distance transmission lines are stepped up to 120 kV) and less prone to failures from overloading.  so that is an argument that lends itself to choosing a higher voltage.\n\nso, both have their ups and downs - ultimately i think the choice is pretty arbitrary, but the different standards are going to cripple any movement towards a global society.
294297
Operating 60Hz appliances at 50Hz or viceversa may result in excessive heat buildup in transformers or in certain types of electric motors. \nIf you wish to safely operate 115V 60Hz appliances at 115V 50Hz then the following steps can be attempted: \n\nContact the manufacturer of the appliance. It may be possible to safely operate at 50Hz with the manufacturer's approval. \n\nSee if an alternate 240V 50Hz or 115V 50Hz power supply or electrical motor is available. Some manufacturers sell the same appliance or electric tool in many countries around the world and may be able to retrofit the power supply or electrical motor to 240V 50Hz. Some regions of Japan have 100V 50Hz supplies while others have 100V 60Hz supplies so it is not uncommon for Japanese manufactured electrical devices to have 50Hz solutions. \n\nIt is possible to purchase 60Hz sine wave power systems that take 240V 50Hz on input and produce 115V 60Hz on output. These solutions are generally very expensive, and it is usually more cost effective just to replace the tool or appliance. See here for a high current frequency conversion solution. \nIf these solutions, for one reason or another, do not work then there are only two further choices: dispose of the appliance or tool, or attempt to operate the appliance or tool at 50Hz and in the process potentially create a situation where the power supply or the motors in the appliance or tool are rendered non-operational.
561857
Design 1 because it requires the least energy meaning the least risk of getting electrocuted when using a high voltage engine.The users safety must be considered too.
28870
Intially it was ignorance , then it became a matter of convenience...The terminologies did not change..people still refer to it as AC voltage and DC voltage..just like People refer to siemens as mho in some places..It just became a standard term
358302
Electrical cars have been practical and affordable for at least fifteen years in the US. But with lobbying from the rich oil companies, laws and car manufacturers have not had any incentive to work towards them. Ford and Chevy tried, and couldn't make the marketing work to get enough people to buy them. Only with gas prices rising in the US have hybrids even started being fashionable.\n\nSolar cars are not yet practical, in most parts of the US, because of the limited efficiency of solar panels and the fact that many parts of the country do not have that many sunny days per year. It doesn't suit the average commuter if they can't get to work because it is raining.\n\nHowever, if people really started using electric cars, solar powered recharging stations could be added in many parts of the country where feasible. This leaves other forms of electric power production as the source where solar is not as useful.
337931
Third world countries are swiftly changing their mindsets because of globalisation.\n\nToday, India is far more advanced then even the USof A in many fields including, you'll be surprised ..Telemedicine, and cost effective too, and this came to me from a US General I interviewed during a telemedicine conference.\n\nThen many Asian countries have jumped steps, in say mobile communications, S Korea has already started a major shift to 3g technology, while the west still is stuck with older technology.\n\nIn Robotics, Japan is far ahead of the US.\n\nIn another sphere where India is ahead, especially with regards to costs- satellite technology- Indians put up space craft at costs that are a fraction of those in other countries. For example, the Indian Moon mission (it's gonna carry some equipment that the US wants for their own use), or Chandrayan as it is called is scheduled for 2008, will cost just around US$400million, vis-a-vis a similar Apollo mission which cost the US around US$12Billion. The Indian mission is gonna be  lot more sophisticated that the Apollo, including a robotic arm that will test soil samples.\n\nMany Indians based in the US want to return to India, at even a lower pay, and most western mangers consider an India or China stint as a plus in their career records.\n\nSo bud, it's already happening in all fields and businesses.
532284
Dude what your talking about doesn't really exist in the consumer market.  That's like A.I. recongnition electronics and it's still being built and tested.  You'll have to wait a while.
335254
This is a good question.  Many of the electronic devices today use semi-conductor devices that work at low voltages.  However, that has only been the case since the mid-1960's on average.  Prior to this electronic devices used Vacuum Tubes.  These vacuum tubes used very high voltage DC to cause the flow from an cathode to an anode to flow.\n\nUntil the development of the High Voltage semi-conductor or Silicon Diode most electronics circuits used Vacuum Tube Diodes.  These Diodes would allow for current to flow in only one polarity the same as silicon diodes.\n\nAn intermediate high voltage diode between the vacuum tube diode and the silicon diode was the Selenium Diode.  This diode was the first solid state diode; however, they were not very efficient nor were very effective when high currents were required.  However, today selenium diodes are still in use where size is not an issue.  These diodes generally can work with voltages up to about 2000 VAC and currents as high as 100 amps.\n\nGenerally, most high voltage circuits today use silicon diodes with a high Peak Inverse Voltage (PIC).  On average most cost effective Silicon diodes have a PIV of 600 volts DC.  To increase the voltage that diodes can work you can put them in series, or connected one after then other.  This way you can daisy chain several diodes together to achieve a PIV of up to around (3 in a row) or 1800 volts before the capacitance could be a problem.  This same type of diode works at one amp, if you place them in parallel or side by side you can increase the amount of current your bridge can support.  Again I would not recommend using more then 3 semi-conductor or silicon diodes in parallel, or use for rectifying more 3 Amps of voltage.\n\nTo make your Neon Sign DC voltage converter I would recommend using selenium diodes specifically designed for the high voltage you are talking about.  These diodes and semi-conductor diodes are still available from a number of retail suppliers.  If you would like to try a Vacuum Tube diode, similar to the one used in the high voltage section of a Color TV, Ratheon is the only supplier I can recall that still makes vacuum tube diodes.
556116
Wow!\n1. Nuclear, Hydro, Sun, Wind\n2. All over the country\n3. Best to talk to an indian government rep.\n4. refer to 2\nI know for a fact that the government splits the power generation via the state. So you might be better trying to find technical data of india per state.
363749
You will need a plug adapter and a power converter otherwise you will damage you power pack and laptop.\n\nOr the easier option is to buy a new power pack in Australia or buy one that works in Australia before you go (the compatible ones are cheaper than originals).\n\nNot only are the plugs different, but the main's current is also different.\n\nIn the US, the current running in the mains is approx 100-127v/60hz.\nIn Australia, the current running in the mains is approx 220-240v/50hz.\n\nPlease see here: http://en.wikipedia.org/wiki/Image:Map_of_the_world_coloured_by_voltage_and_frequency.png\nhttp://en.wikipedia.org/wiki/Domestic_AC_power_plugs_and_sockets
370427
Unless you are playing with low voltage, please find some other project. 120 Volt or 220 volt is very dangerous.\n\nAny way you will need all the components in same voltage I say get every thing in under 9 volts to make things easy, they must operate in 6 to 8 volt range so you will have voltage to spare. You may not be able to find them readily.\n\nThis is how it works.\n\nClapping sound is picked up by micro phone.\n\nThis produces a signal, that will close an open circuit on a lamp(or any thing that you need to turn on like a bell).\n\nTo make a package, like the one you buy in the store, it took quite a few years to perfect it, and they had experts working on it.. \n\n1.  9 volt battery. few to operate the systems.\n2.  red and black wire.\n3.  9 volt lamp.\n4.   6 volt Micro phone.\n5.   Sound activated switch, 6 volt \n6.   Tapes electrical.\n7.    cardboard to mount every thing.\n8.    cutting tool to make connections.\n9.    Solder iron and silver solder wire.\n10.   Different types of connectors.\n11.   Glue to put components on the board. \n\nEdmund-scientific.com may have a kit, it is on Internet.\n\nBuy the kit and assemble it.
20757
By Lance Ulanoff  \nImagine a world where all your portable devices can be charged and powered simply by placing them on a desktop. Chip manufacturer MobileWise has gone well beyond imagining such a world and this week unveiled "a conductive solution" that it believes can make it all possible.\n\nDuring a mid-day press conference in chilly New York City, MobileWise showed off a handful of functioning prototype powerbases and retrofitted mobile devices that all use the company's new MobileWise chipset and enable "Wire-Free" electric power. One chip, the tiny Adapter Controller, goes inside the mobile device and the other, the Contact Controller, gets built into the power base station. These power bases, which were shown in a wide variety of shapes, sizes and colors, are each covered in an array of gold-plated contacts. The retrofitted mobile devices also have a pair of contracts. With properly configured handheld devices, the bases can, according to company CEO Andy Goren, change any flat surface into a charging/power station.\n\n \n \n \nThe patent-pending technology behind the MobileWise is, on the surface, quite simple. The adapter chip inside the handheld device will, when placed on a base station, receive a very small electrical signal and message from the base controller chip that will power up the adapter chip. The base controller chip will sense for polarity. If there is none (say you place your hand on the base) then it does nothing. If it does find polarity and then a signal from the adapter chip, it will then read information about the voltage level necessary to run the mobile device and begin charging and powering it. Because of the array of contacts—from dozens to hundreds, depending on base size—there's no need to place the device in a special spot or position on the base. In fact, during the demonstration we saw the bases accept multiple devices, charging and powering them all at once.\n\nThe solution is not actually entirely "wire free", however. The base station is plugged into an AC adapter and can deliver up to 30V DC to an individual device. It's also, according to Goren, completely safe, and if any charge were delivered to a person, it would be at the level of a low-voltage battery, virtually imperceptible to humans and certainly not harmful, he added. The final base units will also, he said, be waterproof and protected from electrostatic charges. \n \n \n\n\nDespite calls for MobileWise to manufacture the bases, Goren said the company plans instead on delivering the chipsets to partners who will likely build the adapter chip and proper contacts into their products and OEM the power base manufacturing to another company. MobileWise showed a variety of colors and form factors for the bases.\n\n \n \n \nAcer has already partnered with MobileWise and, according to Goren, may ship a MobileWise-enabled notebook by Q1 of next year. But MobileWise has, it seems, even more intriguing plans on the horizon. The company is already in discussion with a couple of major office furniture manufacturers to build the power array bases and controller chips into furniture. Apparently, these bases are for more than just mobile devices. Properly-equipped televisions, lamps and more could be powered by the bases—Goren even had an HDTV that worked with one of the larger ones. Later next year, MobileWise expects to add data handshake capabilities to the chipset, allowing, once the signal is split, data delivery over the same contacts.\n\nWhile no shipping units currently exist, MobileWise said the adapter chips run roughly $1.25 a piece adding, it said, just a few dollars in manufacturing costs to mobile devices and the base stations could, in units of 100,000 cost roughly $11 to manufacturers. Goren said he expects a mid-sized base (roughly 12 by 18 inches) to sell for $160 street. Not every mobile device will have to be retrofitted, by the way. MobileWise says it expects to see a ha