PS-28S

The IMSAI PS-28S is a switch-mode replacement for the original linear PS-28 and PS-28U. It is designed around commercial AC/DC enclosed power supplies made by Mean Well.

The PS-28S footprint and connection pads are identical to the PS-28U with the exception of a few additional +8V and Ground pads.

Order from the list below. Be advised that individual parts for the kit are not available to bare board customers unless they are explicitly in the options list. Please check the parts list.

PS-28S

Complete PS-28S kit with manual.

PS-28S-BB

PS-28S bare board without mounting hardware.

Project Status

The PS-28S development is underway.

The anticipated suggested retail price for the PS-28S complete kit is $199. Shipping of the first orders is estimated to be March, 2025.