In most of the United
Kingdom, we are
assured of a stable
240 V mains supply
voltage. In many other
regions, including
some parts of Europe,
that stability is not
always evident.
The circuit described
in this article uses a
bar of LEDS to show at
a glance what the
actual level of the
mains voltage is at any
one moment.
Downloading of this magazine article is reserved for registered users only.
Discussion (0 comments)