At 03:36 PM 5/12/2005, Lindy Mayfield wrote:
>Is it safe to say then that a ripple or an uneven DC output from an 
>AC to DC converter is due to the omission of some very cheap and 
>simple passive components?  And if so, where they left out just to 
>keep costs down because they aren't necessary when charging a 
>battery or providing the input DC supply like a wall-wart does? And 
>as a hobby electronics person, I can just understand that and add 
>them myself if I really need a more filtered DC output?
>
>(I would like to say I've really learned a lot from this thread and 
>I do really appreciate the time people took to explain things.)

Cheap is all in your definition.
I like to use AC wall warts, because they are significantly less 
expensive than DC output, or filtered/regulated ones.
Plus, I really distrust putting the regulation on the wrong side of a 
long transmission line.

On pretty much anything I've designed, the wall wart will be as 
simple as possible, and the smarts will be in the product.

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