Supply converter: demany only the needed power (#577)

ZettaScript

2022-10-20 718a5beda197cd0a775fd41aedfb5b1bbd5d1d8b

 technic/tools/sonic_screwdriver.lua

@@ -86,7 +86,7 @@
      return itemstack
   end,
})
 

minetest.register_craft({
   output = "technic:sonic_screwdriver",
   recipe = {