The input could be any voltage from 100 V to 240 V ac. Each would be adjustable, and each would be isolated both from the others and from the input. Power interface for new 42 V automotive electrical systems. Automobiles will make a transition to a 42 V electrical system soon, but many 12 V parts will still be used. The objective is to design and build an efficient but very inexpensive power electronic converter for 42 V to 12 V, to serve older parts of the system.
Cost is the biggest issue.
Isolation is not required. Computer supply dc backup. Most computer power supplies use forward converter or flyback converter designs. In this project, we make use of this for the design of backup power. This is connected through a diode to the supply dc bus.