Power Supply Unit for a PDP11/45

The power supply for the PDP11/45 consisted of two H7420 power units, each rated at 1KW. Each unit was prewired for removable regulators according to the options installed in the system. The items left to right, top to bottom are :-

There are additional +15V supply units built into the transformer housings (at the far right).

H744 5 volt, 25 amp Regulator Module