question on 9vlt.700ma. wall wart

[donald stringer]

 I found this in a thrift store. I was wondering would this be too much voltage if I used it as an supply to power up a string of stomp boxes?  Three of them are boss style and two are dano-minis. Is there a way to wire them up so one pedal doesnt draw more than the other. In my mind I am thinking that a few hundred ma. extra wouldnt hurt anything.

[petemoore]

  {Voltage} 9V isn't 'too much voltage. All your components are [should be] rated for at least 9v in...every stompbox I know of.
  {Ma. / Current} It would take alot of pedals, or pedals with comparitively massive current draw to over-draw/burn out a 700ma. adapter, depending on the pedals of course, unless you've gotALot of opamps or some digital circuits...
  Whether the WWart provides 'ripple free' [9v., 'Very' DC] is another matter, if you notice hum that'd be what to look at as culprit.
  Voltage potential is like 'how hard' it pushes, to be safe, every component running off a 9vdc source should be rated at at least 10vdc., I use caps rated @ 16v or more, and...check the data sheets for your active components...they're rated higher than that in this case.
 
 
 

[BrianJ]

The only problem I can think of is that the voltage may run high without the rated load connected.  If a "9v" wallwart isn't regulated the voltage will (and is supposed to) sag down to it's rated voltage when you near it's rated current draw.  Measure it with a meter, I've seen some sitting at 13v unconnected.

[Rick]

A few hundred extra milliamps is a good thing.
Think of a 12V car battery rated at 700 amps powering your walkman.
The walkman will never draw that much current, but it will run for a long time.

[343 Salty Beans]

I've been wondering about this too...is there such a thing as too much current (mA)? I ask because I plugged a 9V DC, 500mA wall wart into a Boss ME-50B a few days ago, and it refused to work with that adapter, no matter how much I wiggled the barrel around. And it definitely was a working wall-wart...it worked with other pedals.

[Rick]

Does your Boss pedal work with other wallwarts? And is the polarity of the wallwart connector the right one for the pedall (some are center pos, some center neg)? Perhaps the pedal jack is wonky if it doesn't work with any adapters you've tried.

[343 Salty Beans]

well, it worked with my boss adapter until the boss adapter crapped out. I fixed the boss one like 8 times, but there's a break in the wire somewhere in the middle, and I'm too lazy to find it. I guess I'll just have to repair my boss one :/