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In the Forum: Melquiades Amplifier
In the Thread: Planning my DSET
Post Subject: I've started building the power supplies...Posted by anthony on: 12/7/2016
I designed up a steel chassis for both the Fullrange and DSET Melquiades. Here they are screwed together for the first time.
Then I have made sure all the cutting and drilling has been in the correct places by quickly putting the parts in their places. The Fullrange Melquiades will has a separate power supply just in case I take things further and make it three channel. There is plenty of room to add more iron in there. First the bottom shelf...
The DSET power supply is much more hefty with no spare room. The bottom shelf...
...and the middle shelf...
Power supplies are down the bottom, diodes in the middle and chokes are on the top shelf.
The cases are made from steel but the aluminium platforms are used to keep the magnetics at least 20mm from any ferrous material. I have used sorbothane bushings to isolate the individual platforms from the steel chassis in an effort to minimise vibrations. All iron (apart from the toroid for the services supply) are custom wound by a very smart fellow in Melbourne (Lucas Cant from Black Art Audio) and are built on large cores for tight regulation (generally 1% or 2% regulation), low heat gain (no more than 20 degrees) and low impedance.
Everything has been painted or powder-coated since these photos were taken and I am currently building all four supplies in my evenings and whatever spare moments I can grab.
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