can MegaStim handle 12V input?

[Tronman]

coyoteboy wrote:

I have to add to the warning that was mentioned earlier about
open-circuit voltage - two of the 12v wall-warts I tested last night
were throwing out nearly 20v with no load Shocked Looks like ive got a
use for that old AT power supply after all...

<snip>

Hey, those make great power supplies for Amiga 500s! ;-) Except they
are bigger than a Mac Mini..

Bolton

'What do you mean, Megatunix won't run on a 512K Amiga with KS/WB
1.3??!!' Bloatware!

Posted by email.

[minty9277]

You can use an ATX power supply, if you link the green cable to black earth, it tells the PSU to switch on.

Ian

[coyoteboy]

Well spotted Ian. They are my favourite source of power for all my elec projects when testing - nice clean voltage at 12 and 5 - ideal for logic level and automotive (without noise) testing.

[coyoteboy]

I'd just like to add:

http://web2.murraystate.edu/andy.batts/ps/POWERSUPPLY.HTM

[lmacneill]

I'd just like to add:

http://web2.murraystate.edu/andy.batts/ps/POWERSUPPLY.HTM

What a cool link! I'm going to builld one right away -- it'll come in handy for far more than just my MegaSquirt project...

For MS testing, I have a 2-amp 12-volt regulated power supply... It puts out precisely 12.00 volts as measured by my DVM, from zero load all the way to its 2-amp limit. Very well-reguated, indeed, and it has a built-in, resettable circuit-breaker that pops if you accidentally exceed its 2-amp current-limit. But it was an expensive piece of equipment (around $100, if I'm remembering correctly) that I've owned for more than 10 years... Didn't buy it just for this MS project, that's for sure... Honestly, I can't remember exactly why I bought it, but it's been handy to have...

[levcat]

Convert-a-Computer-ATX-Power-Supply This article saved me some time and money with all those 9v batteries.

[Robin]

Hi I would like to know if I can use a car battery to hook up to my stimulator for testing? It is 12 volt and 300 amp cranking power..

[racingmini_mtl]

You could use a car battery but if you do, put a low amperage fuse (about 1A) between the battery and the stim. A battery can provide a huge current that will fry the components and board if there is something not right with the assembly. I may even start a fire.

Jean