[sdiy] Power Supply Supplier (wallwart type)

[Mike Beauchamp]

I'd also open up your spring reverb unit and see what's happening
inside there.. see if there are voltage regulators inside, find their
datasheet and see what minimum voltage they expect. If the regulators
are knocking that 30VAC down to +/- 15V then you should have no
trouble using a 24V adapter for example.


On Thu, Jan 28, 2010 at 9:45 AM, Oren Leavitt <obl64 at ix.netcom.com> wrote:
>
>
> Tim Parkhurst wrote:
>>
>> On Tue, Jan 26, 2010 at 11:04 PM, James R. Coplin <james at ticalun.net>
>> wrote:
>>
>>> My favorite Spring Reverb Unit wallwart just went up in a melted ball of
>>> smelly goo.  Dramatic.  Cracking open the melted husk reveals a
>>> transformer
>>> without any type of fuse.  I'm lucky my house didn't burn down!
>>>
>>> Unfortunately, it is not a standard run over to Radio Shack and pick up a
>>> universal replacement.  It is a 30V AC @ 600ma.  Anyone have a source for
>>> a
>>> "Wallwarts 'R' Us" type of place?  The unit is a single space rack and
>>> there
>>> isn't much room in the case.  I don't think I could wedge a transformer
>>> in
>>> there but I might have to.  I think I'll add a fuse though if I do.
>>>
>>> James R. Coplin
>>>
>>
>>
>> Hey James,
>>
>> I see several AC to AC wall warts at Jameco, but I could only find
>> 24VAC or 36VAC. The 36V unit is just a transformer (#148559). Is there
>> any possibility of running the unit on 24VAC? Otherwise, you might try
>> hunting around at Mouser or Digi-Key.
>>
>>
>> Tim (and I'd definitely add that fuse) Servo
>
>
> Try local thrift stores, too.
> They often have heaps of wall warts, cables, etc... etc... ( and somtimes
> other surprises* :) ) in a bin.
> Usually a buck or two ( USD $1 or $2 ) a peice.
> I don't think I've ever had buy a new replacement wall wart.
>
> I had cordless drill charger wall wart "melt down" recently, too (due to the
> batteries in the drill shorting internally). There was no fuse of any sort
> in that thing either.
>
> *I did find a perfectly good Boss TU-12H chromatic tuner for $2 in one of
> those thrift store bins.
>
> - Oren
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Mike Beauchamp
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