On Sep 5, 4:25*pm, Phil Addison wrote:
Any suggestions for a source of illuminated light switch as a reminder
that the light it feeds is still on? We have a loo under the stairs with
the light switch on the outside and it sometimes gets left switched on
so the fan remains running (as well as the light being on). I don't want
to fit a clunky 20Amp DP mains switch like thishttp://www.fastlec.co.uk/mk-20a-dp-switch-bottom-flexneon-k5423d1whi-...
or thishttp://www.fastlec.co.uk/mk-20a-dp-switch-water-heater-k5423whwhi-p-5...

What I really want is a basic light switch like thishttp://www.fastlec.co..uk/mk-10a-1g-sp-1-way-plateswitch-k4870-whi-p-5...
but with a neon indicator incorporated. I can't find such a thing, the
nearest being thishttp://www.tlc-direct.co.uk/Products/DT2503A.htmlbut
it works the wrong way round - the illumination is 'on' when the switch
is 'off' - its so you can find the switch in the dark. I suspect the
wiring could be reversed, but as it's intended to show up in the dark it
may not be bright enough for use in a *lighted area.

I also found thishttp://www.fastlec.co.uk/mk-neon-locator-200250v-50hz-k3041-p-496.html
which is an illuminated section that sits between the switch and the
back-box. Again I'm not sure if its bright enough and it seems a bit of
an overkill.

I'm considering modifying a standard light switch by drilling a hole
into which a small neon or LED is fitted. There is some safety
consideration here so wonder if there is suitable double insulated
neon/led available. Failing that I think I need to create some kind or
perspex window in the switch with the neon/led behind it.

Any thoughts?

Phil


Cnnected from L to E a neon on a 220k resistor will add in the region
of 0.7mA. An ultrabright LED can be run off much less than 1mA with
decent light output. And if you run it from a CR dropper the power
diss would be even tinier. The LED would need a rectifier of course.


NT