Power supply modifications

The switching regulator seems to be much better, I just did a bench test with a 0.5a load on the 5v. After 30 minutes, in open air, it didn't get above 35 degrees without a heatsink. I have the new circuit designed and I will try and mill one out tomorrow.

The only other niggle, is when the 12v is off I have to remember to turn it on with a M80 before I set the bed temperature or try and move any axis. I had a quick look at the javascript and presume I could just add a M80 in the right places.

Regards,

Les

EDIT: I just took it up to 950ma and it was only just over 40 degrees.

Edited 1 time(s). Last edit at 05/13/2014 02:40PM by Pointy.

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I got the new PCB made today and it has been working great so far, with the lid off the box and after several hours printing the temperature of the regulator maxed out at 45 degrees, without a heatsink.

I thought it might be a good idea to have a few vent holes in the lid, so I came up with this...



Once I have printed the new lid and fitted it, I will have to do some more testing, but I am hopeful it has fixed the problem.

Regards,

Les

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