Step down transformer for my router to use in india?

Question

I bought a router in USA its power specs are as follows..
Input: 100-120v~0.5A, 50~60Hz
Output: +5.0V---2.5A
The power output in India is 240V so i will obviously need a step down transformer. These transformers have specs of 100W to 15000W, now the question is how many Watts transformer will suite my router's inputs specs.
Please help me select a transformer...
here is a link of these transformers...
http://www.voltage-converter-transformers.com/step-down-transformer.html

Thanks in advance..!!
Cheers, adityaKiran

I though we are supposed to consider the Input specs of the router to select my transformer. I mean the output of my transformer should be in sync with input of my router.
So to put it simply will a 100W...240 to 110v converter (transformer) be sufficient?

Answer 1

It is enough with the 100 w transformer.

Answer 2

5 volts at 2.5 amps is 12.5 watts so pretyt much any transformer that goes from '220' to '110' should work if it's rated at 12.5 W or more. But I'd bet if you check on the 'net you'll find someone who makes a 'universal' input supply that will work from about 95 to 260 volts and put out 5V at 2.5 (or more) amps.


Doug

Answer 3

Transformer is an electric powered gadget which transfers electric powered potential from one coil (customary) to a different (secondary) by potential of the belief of mutual induction. The enter is given contained in the direction of the customary and the output is tapped from the secondary. If the secondary coil has greater variety of turns than that of the customary that's pronounced as "STEP UP" transformer. by using fact , the secondary voltage willbe greater suitable than that of the customary voltage. if it is any opposite direction that's pronounced as "STEP DOWN" transformer. right here the secondary voltage would be under that of the customary. In an proper transformer, the potential enter would be equivalent to the potential output. yet almost that's impossible by using precise transformer losses. somewhat the transformer will improve or decreases the voltage. So the present would be inversely proportional. ie. if the voltage is greater cutting-edge would be decreased. and vice versa.