Schematic

The schematic MUST be used only as ->> a reference, in fact it offers varied experimentation possibilities ->> and can be used as a starting point for several experiments :
PHONE LINE protected in ->> from over current and/or over voltage.
230V ELECTRICAL LINE EMI protection and/or extra tensions protection.

Therefore you will be able to mount or NOT to mount different components, or to experience in the lab the efficiency of your solutions
-->>
So, components to be assembled on board depend from the experiment you want to run.

Download the complete PDF documentation --->> download

Buy the file GERBER for the realisation of the ->> to build the Printed Circuit (PCB) --->> ac-safe_gerber