There has been alot of talk about 220V high amp contollers, and I have been talking about building this PWM 220V High amperage controller for some time. So I have it finished, I have done testing with water, while monitoring current flow with an amp probe. Its too cold here to run a mash, and the old lady wont let me do it in the house, so its gonna be a couple months before I can still with it. But I am confident that it works. I have 5 settings in 20% intervals. I have in this one a 25A solid state relay, so it will handle the current most hobby stillers will throw at it. Running wide open my element pulls right around 13A, and my 20% setting pulls 2.5A, 40%-5.1A, 60%-8A, 80%-10.5. I am including pictures of the build and I will post the program I made for the microcontroller. I dont have alot invested considering, and I got most of my stuff from ebay. here is the breakdown:
micro controller: $23
Controller breadboard for circuitry: $8
25A SSR, $20
rotary switch: $4
Box: $4
Heat sink: FREEBIE! (Im sure you can get them cheap, or scavenge from something)
EDIT: Making your own likker.......$PRICELESS!
Some misc. wire, and electrical supplies
Power supply for the micro controller, I hacked an old cellphone charger. The micro controller runs on 6-14Vdc
I installed a 25A relay, but you can put any SSR in its place for lower amperage, if you like. It just needs to be able to trigger with a 5Vdc 20ma signal. The breadboard is the same size board as the controller and piggybacks right to the top of the microcontroller.
You do not have the required permissions to view the files attached to this post.