replace power supply with battery question?
my son and i are getting in to electronics so go easy on us, so we have an old set of computer speakers, we have extracted the amp out and want to use it for a battery powered amp for other speakers we are building. (only small speakers for his treehouse),
the power supply was 6v 400ma, so if i wanted to use a 9v battery, do i need a 6v regulator?
it would be great if someone could give us some info on how to do this.
thanks in advance (a confused dad!)