MegaStim Power Supply(can u use an old computer PSU?)

[newboyneil]

Don't u just hate it when u have read a really useful post, but a month later u can't remember which forum u read it on!!

Anyways somewhere i read about using a psu for an old computer to power the stim, apparently the P9's don't last too long. Can anybody confirm this or point to the post?

Thanks in advance

[newboyneil]

Thanks mike,

Just what i wanted to hear, somebody who has tried and tested this method. Super fast response only put the thread up less than 10mins ago!!

[W113]

To use a PC power supply is a good idea, but maybe a bit of caution is needed.
The 12 V PC cranks out in excess of 5 A so please install a fuse in the supply to the STIM/MS.

Especially when starting up the first time or after hardware mods.
Otherwise you may be unlucky and fry some PCB trace.

A 500 ma fuse in the lead between PC pwr supply and the STIM/MS is a good start, once all is up an running you can do w/o the fuse.

I am lucky enough to have a lab pwr supply with adj current limit, and with my unlimited potential to let out smoke from electronics I try to remember to always start with the CL knob way down at 20 mA and then crank it up!


W113

[newboyneil]

Thanks W113

Will make sure i have the fuse in place!!

These links might be helpful to others....

http://wiki.ehow.com/Convert-a-Computer ... wer-Supply for a very similar guide by the user Abizarl.

http://www.tc.umn.edu/~beck0778/powersupply.html if you are interested.