Magnetic lamp

In today’s magnet application we would like to show you how our customer built a mobile magnetic lamp.


Build your own magentic lamp

These materials were used:

  • 2 x SmCo discmagnet Ø 10.0 x 5.0 mm S280 nickel – holds 2 kg
  • 3 x disc magnets Ø 5.0 x 2.0 mm N40 nickel holds 650g
  • 3 x staples for the lid
  • Wood, variety of your choice, in the dimensions L 14 cm x W 6.5 cm x D 4 cm
  • 1 x 3 watt 700 mA high * power LED with aluminum heat sink
  • 1 x battery compartment with parallel connection for 2 18650 lithium batteries
  • 2 x 18650 lithium batteries
  • 12 volt switch
  • LED driver constant current source (e.g. LD06AJSA)
  • 6 x screws
  • Aluminum sheet strips for LED and holder, as shown in the photo
  • one cable each in red and 1 cable in black
  • Soldering accessories for wiring and fixing

Tools required to build the magnetic lamp:

  • Cordless screwdriver
  • Wood drill 5mm
  • Metal drill 10mm
  • Chisels to hollow out the battery compartment
  • Sandpaper

These steps were taken to create the mobile magnetic lamp made of wood and aluminum:

  • In the housing there are two parallel connected lithium batteries and a constant current source chip, on the front there is a 3-watt LED
  • At the end of the lamp there is an aluminum bracket in which 2 x samarium-cobalt disc magnets have been glued
  • The cover for the batteries is also held closed by magnets
  • Staples are located by this cover
  • The bracket was made of aluminum so that the entire lamp is not magnetic
  • The magnets were attached with the opposite poles, once with the north pole side and once with the south pole side in order to improve the magnetic holding force.