does someone can tell me what is a schottky diode please???? is there a schematic about the new circuit with udpates? because i’m bad and i don’t understand where i have to insert a jumper…  ( the jumper is here to shorcut  one of the diodes???right???)
 
does the last photo represent the first schematic or the second???  i’m not sure but there there ‘s a lot af componant into the box and the second schematic no…
 
francois