Ok Thank you !
So, its 3 zener diodes, 1n5223b
3LED, and one 100ohm res.
What do you advise me to use for the other diodes ?
I have some 1n4148, its fine?
An other question about the output, what is the number 4? I just dont mind and just use a mono jack socket?
Sorry for those noobs question, and Thk you for your advices !
Ben.