Mains Delay

This is helpfull design that I saw in Elektor. It is most simple circuit, low number of elements, works great....

This is the schema

You can use 12v or 24v relays, only some components will have to change. I have used used 56 instead of 10 for resistors R4-R7, so that current is limited to ~1A. Because I use 24v relay I had to change C1 to 220nF. Best thing is if fuse blows, everything will shut down.

Here are to simulations that I did for Diyaudio, for someone that would live in UK where they have 240Vac

Here is my delay...