[sdiy] L7915 - Confusion

[lanterma at ece.gatech.edu]

On Jan 21, 2011, at 5:30 PM, Matthew Smith wrote:

> Just for the record, this is a little +15/-15V 0.6A bench supply I'm putting together with ammeters on both rails for development and debugging purposes.

Speaking of which... I'm working on something similar...

If one wants multiple voltages - say 5V, 9V, 12V, and 15V, in some combination - is it better to "cascade" voltage regulators? (I.e. get 12 V from 15, 9 V from 12 V, 12 V, 5 V from 9, etc.), or "parallel" them (have all the regulators get their inputs from the same original >15V supply)?

- Aaron