Powering up Project Page 11

This is a shot of the main power supplys rectified output voltage. I put 3 one quarter inch bolts thru the front case for the power supply lugs.The one on the left is the 11.58 volt supplys hotor positive lug the center is a common ground both transformers use this ground lug. The one on the right is the positive lug for the 30 Volt power supply.I'll be addin a 150 volt DC voltmeter along with the other items to make the power supply useful. When under a load I was gettin 23.9 volts @ 12amp. this is the coaster area of this transformer.

OK so I gave up on the Light dimmer idea. Thats because a 15 to 20 amp dimmer switch cost around 40.00 to $100.00 bucks and I learned that they don,t control the actual voltage rather they control the phase. Anyway I bought this 6 amp to 8 amp continuous @ 120 AC panel mount variac off of e-bay. this is new old stock, paid $31.00 plus S & H . May I suggest if you buy a variac from E-Bay try to get NOS (New, Old, Stock.) They are old but brand new, never used, and usually come with wiring instructions.I disconnected one wire from MOT and wired it to one input terminal on the variac the other input wire is a shared connection to the MOT. In other words its a input and a output on the variac. I ran it, via jumper wire to the other input of the MOT. The Brush connection of the Variac runs to the MOT. ( where I disconnected from MOT,for input to variac.) I,m gonna draw a wiring schematic to help clarify wiring details. Anyways this works great for getting a variable power supply. Why use two transformers? Because if the efficiency of the rewound transformer is high enough, you can ideally get 10 amps out of the Mot for every amp input. This is if your rewound transformer is 100% efficient. But no transformer is 100% efficient, so even if my MOT is only 50% efficient then I should safely get 30 to 40 amps from the MOT. (I dont plan to go near this amp range)I could rectify the output from this variac and get around 169 VDC at 6 amps, but I don,t think it would last to long at this output. Oh by the way the e-bay seller has several of these variacs on hand. name is OutofTheBox.