Could be anything, but just remember most voltage supplies these days are
unregulated so they will drop with any load across them.

"alitonto" wrote in message
oups.com...
Hello,
I am trying to work out in particular which component is most likely to
cause a reduced voltage at the supply point to its circuit. I suspect
there is something pulling too much current ahead, becuase when I
disconnect the circuit then the supplied voltage returns to normal
measurement.
Thnsk, Ali