Design refinements #1

A project log for Second Life UPS

A UPS using refurbished ("second-life") lithium-ion 18650 cells.

EnkiEnki 04/18/2021 at 14:310 Comments

Today I have performed a number of design refinements:

- I rewired the output board to provide 6 x 12V output and 2 x 5V output as the 12V is much more versatile

- I improved the way that the AC 230V power cable attachment to the device, I have an electrical tube fitting instead of the cable just dangling out

- I added a 7812 V regulator to power the AC PSU Fan, powering it from the DC rail directly was working but the high-pitched sound was annoying

All of these have been reflected in the project details.