9V Mains DC safety question

[maurice]

So I'm testing and debugging my builds with 9v batteries whilst still getting to grips with electronics and I'm discovering that low voltage/drained cells sometimes cause problems as they don't power certain effects, therefore leading me to chase non-existant problems in the circuit.

My question is this...
If I power my circuits with 9V DC power from the mains, am I at risk of shock / physical harm if I touch joints/metal or use an audio probe or multimeter in the wrong place?  Can shorting damage components etc?  OR will the boss adapter/wall wart/transformer just give a minor 9v tingle when touched?

Thanks! And sorry for the basic electronics question, but I'm still learning and really don't want to fry myself!

[italianguy63]

9V DC at the amperage delivered by a 9Vcell or wall wort is not dangerous.  I doubt you could even feel it.

[maurice]

Thanks!  That's the answer I was hoping for

[bluebunny]

Avoid debugging with your tongue (it tingles), otherwise you're good to go.

[kingswayguitar]

i shorted a 9v battery in my finger and it did burn pretty bad
no long term damage though... i think

[PRR]

Use a supply *made for pedals*.

These are sure to be well insulated from the wall wiring.

Also they should be low-buzz, which is another thing you don't want to be debugging pointlessly.

[Will.mendil]

It as already been said but do check the amperage. As RRR said stompbox power supplies do not have a lot of power but if you use a random 9v supply with a high amperage delivery it can be different. I don't have any values in mind though

[greaser_au]

the nice thing about wall-warts is that they are already CE/UL type-approved. No messing around with the mains supply!

david

[deadastronaut]

i use my daisy chain 9v for my breadboarding all the time, no batteries, ..after all its what the pedal will be used with.

fried a few leds, and 10r resistors (they go well ) ...but now i'm a bit more careful about releasing the magic smoke