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


Lamp model view

Lamp model view II

Magnetic closure battery compartment

Turned on lamp


Magnetic lamp on coffee roaster

Lighting on the coffee roaster

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.