Actually, yes, you should.  How many times have you
"lost" the original wall wart that came with a
product?  Or put a bunch of gear into a box and when
unpacking, go "hmm, which WW is which?".  In fact,
most WWs don't have an easy way of associating it with
the equipment it came with. Some devices don't even
say what the polarity requirement is.  Its completely
unreasonable to expect the customer to get it right
all the time.

Personally, I always check the polarity requirements
on the product but I'm definitely not the average
consumer.

The guy that blew up his pedal should be totally
p*ssed at the dunlop.  it was their fault for sloppy
engineering (selecting an uncommmon polarity and not
protecting). 

--- Dave VanHorn <dvanhorn@dvanhorn.org> wrote:
> At 06:32 PM 5/12/2005, Jinx wrote:
> > > Cheap is all in your definition
> >
> > > On pretty much anything I've designed, the wall
> wart will be as
> > > simple as possible, and the smarts will be in
> the product.
> >
> >I'm truly disappointed for a customer who
> accidentally and easily
> >blew up a $300 Cry Baby Wah pedal. Dunlop supply a
> wall wart
> >with a -ve tip, all of his other effects pedals use
> the more common
> >+ve tip. You can guess what happened. Sure,
> ultimately his fault
> >but for the sake of a 1c diode........
> 
> So I should burden my product design, for a few
> million devices, to 
> prevent someone from having an accident when they
> plug in my power 
> pack to a different device that it wasn't designed
> for?
> 
> Also, a 1C diode would leave the power pack in a
> state that I 
> couldn't use it in.
> 
> What else should I add in to all five million of my
> power packs, to 
> assure that I have the right voltage output for his
> pedal?
> 
> 
> I'm a great believer in "if it fits, it works, or at
> least it does no 
> harm", but in the world of power packs, the damage
> was done when I 
> was in grade school, by manufacturers who failed to
> see the need for 
> and to establish a standard.
> 
> 
> -- 
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