[Neophyte]

I was wondering if anyone knew, (and could tell me) how to change a 9 volt wal wart so that I could power multi 9 volt devices. I've built a plug that would enable me to run 5 off of one wart but when everything is everything seems to be not getting enough power. Lights dim sound is fuzzy etc... I'm trying to run a few guitar pedals and my head amp off the same wart @ my computer for recoring etc...

Any thoughts?

 

[PeterR]

There really aren't any mods you could reasonably do to a wallwart. If your's doesn't cut it, get a bigger one, ore use more of them. Or build your own supply. Transformer, rectifier, reservoir cap, there you go. How much current do you need?

 

[L Daniel Rosa]

Hmm. This question gets my brain ponderng (or maybe it's the coffee on an empty stomach). I suppose IF the total VA requirements were subsbantially less than the wall-wart is rated for and IF the voltage requirements are lower than the 9 volts you mentioned you could use a (possibly two stage) step down switcher.

From theory back to reality, you'll probably be disappionted with the mod-wart's performance. If outlet space is at a premium for your gadgets, try a computer power supply- you'll have power to burn and you can hang some linear regulation off that to kill the switching noise.