Well, after my failed attemps at rearing duck eggs in an incubator due to failiures, I finally cured it.
I got so fed up with loosing my eggs that I sat down with a drink and some paper and drew a design, I then transfered it to pcb and have been testing it on a spare incubator for the last week, works fantasticly.
What it does is if the mains fails it keeps the incubator going with a battery backup which automaticly cuts in.
So hopefully now I can concentrate on rearing my eggs.
OK, I have finished gassing now....