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.