Hi Ef.Berlin,
I'm glad you liked the pull-switch idea, i've used it before in awkward situations where electrical solutions became difficult.
Have you considered increasing the value of the smoothing capacitor in the wlan ?
Enough to ride out the brief absence of power.
When i wrote that, maybe i did not explain myself very well.
I will try to clarify what i had in mind.
Sometimes, when one turns OFF electronic equipment,
its little lights will stay on for a short while, and it continues to operate for a
short while.
This is because the working parts inside run on DC, yet the mains supply is AC, so there
will be a rectifier circuit involved, and a smoothing capacitor.
Sometimes the smoothing capacitor is a little bit more than needed, and the unit will
"run-on" briefly after being switched OFF.
That is the smoothing capacitor i meant.
the power supply has its own smoothing capacitor it seems, at least for half a second.
would it be expensive to add a little more protection?
I must say, i am not at all sure what you mean here.
But no, capacitors are not expensive.
Ive rewritten this many times, as i thought i may have the wrong end of the stick.
Making the wireless LAN linger a little longer should enable those relays to do
what you want, just as you originally intended.
Best of luck with it, John