Small shock from pos earth pedal
Posted: 30 Jun 2013, 11:02
Ok I have A level physics (an exam at age 18 in the UK) so have smattering of theory.
I HAVE GOT MY HEAD AROUND POSITIVE EARTH/NEGATIVE EARTH - no problem..
But why do I get a shock from my wah wah when I'm powering it from a mains 9v PSU?
The PSU is in one wall socket, I'm sat holding my guitar which goes into an amp, plugged in to another wall socket.
Obviously this is a low 9 volt shock but I'm surprised I can feel it quite strongly, like an ant bite.
I suppose I'm just making a circuit between the +9v outer case of the wah to guitar based earth via the strings.
But I don't see other people complain of this?
(I have a healthy fear of electric shocks having nearly killed myself age 7)
I HAVE GOT MY HEAD AROUND POSITIVE EARTH/NEGATIVE EARTH - no problem..
But why do I get a shock from my wah wah when I'm powering it from a mains 9v PSU?
The PSU is in one wall socket, I'm sat holding my guitar which goes into an amp, plugged in to another wall socket.
Obviously this is a low 9 volt shock but I'm surprised I can feel it quite strongly, like an ant bite.
I suppose I'm just making a circuit between the +9v outer case of the wah to guitar based earth via the strings.
But I don't see other people complain of this?
(I have a healthy fear of electric shocks having nearly killed myself age 7)