forgive the poor sketch but i am wondering if this will give me a negative voltage from a bench supply i am trying to piece together with parts i have lying around?
first thing i guess is would the outputs of the lm2596's be isolated from the dc input? secondly, if i connected say the 5v fixed gnd to the +variable (set to 5v) would that then give me a +5v from the fixed terminal and a -5v from gnd terminal of the variable output? if so what then would be the ground, would it be the connection between fixed ground and the variable +?
first thing i guess is would the outputs of the lm2596's be isolated from the dc input? secondly, if i connected say the 5v fixed gnd to the +variable (set to 5v) would that then give me a +5v from the fixed terminal and a -5v from gnd terminal of the variable output? if so what then would be the ground, would it be the connection between fixed ground and the variable +?