Added optocouplers

Changed OPA77 to AD620

Updated part list

Changed packages, board layout Changed component packages and values to the ones that are available. Moved the heatsink mount back to the PCB,

Added temp sensors

Board layout work PCB is 100x100mm 2 layer 2oz. MOSFETs mounted between a plate and heatsinks, control board mounted under the plate. DUT+ connected directly from binding post to drains, gates and sources connected to PCB with wires.

Board layout work

Created board layout, added info

Changed measurement opamps to OPA77

Added voltage regulators