Sökning: "Axel Djurberg"

Hittade 2 uppsatser innehållade orden Axel Djurberg.

1. 1. Wireless Power Transfer in Cavity Resonator

   Kandidat-uppsats, Uppsala universitet/Fasta tillståndets elektronik

   Författare :Axel Djurberg; Fredrik Forsberg; Anton Lind; Ludvig Snihs; [2021]
   Nyckelord :cavity; resonator; radio frequency; wireless power transfer;

   Sammanfattning : The purpose of this paper is to achieve wireless power transfer inside a resonating cavity, and thereby apply this to charge batteries. The idea is to convert radio frequency waves into direct current, which can charge the batteries. This was done by creating an LC-antenna, which in turn was connected to a rectifier. LÄS MER

3. 2. A Risk Assessment of Common Material Groups with Regards to their Content of Conflict Metals

   Kandidat-uppsats,

   Författare :Andreas Röckert; Holmberg Anders; Axel Nyberg; Jakob Holm Ovrén; Rebecka Lindberg; Viktor Djurberg; [2015]
   Nyckelord :Conflict minerals; Conflict metals; 3TG; Dodd-Frank Act section 1502; manual; functional amount; tin; Sn; tantalum; Ta; Tungsten; W; Gold; Au;

   Sammanfattning : Trade involving tantalum, tin, tungsten and gold, summarized as "3TG", has during the last 15 years, contributed to the armed conflict in the Democratic republic of the Congo (DRC) and surrounding countries. These metals are also referred to as conflict metals or as conflict minerals. LÄS MER