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Power Supplies

Posted on Friday, April 23, 2010 in Electrical Equipment

Why do some electronics still come with bulky power supplies?

I just bought a small, portable home audio station for my iPod and to isten to the radio and it has a bulky power supply serving as an intermediary between the audio station and the outlet. Why can't the audio station plug directly into the wall?

That bulky power supply is a transformer...Transformers are used to decrease the amount of power coming to your iPod station thing from 120volts to somewhere between 5-12 volts (it will say exactly what the output is on the bulky box).

This box also changes the type of current from AC (alternating current) like we use in our houses, to DC (direct current) which is the type of current made by batteries

All of this is housed in an inline box or box mounted on the outlet, instead of putting it in the unit itself...it's more convinient, cheaper to make, and easier to design this way.

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Bring on the comments

  1. synthesizers says:

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