Ring launcher (Advanced)

Item Code: SV543A

Principle and Working:

Ring launcher demonstrates the Lenz’s law and effects of electromagnetically induced currents in a unique setup.
An iron core placed in a solenoid. The ring fits over the coil at some height. When we press launch button on control panel to energize the coil, a large magnetic induction builds-up on the axis of coil, generating oppositely directed induced current in the ring. The two oppositely directed inductions repel, aluminium ring shoots up-to several in air and feet. No effect is seen when using aluminium slit or acrylic ring.
... Transformer principle observed with coil of wire having low voltage lamp, which lights briefly. Overheating of coil is prevented by automatic one-shot timing feature.




  • Launch height and field strength is adjustable of conducting loop.
  • Activation of the circuit by solenoid insertion and thus provides over-current protection.
  • Necessary instruction and precautions are printed on the unit.
  • Separate LED indication for Power and Active status.
  • IR Remote for safe launching.

  • To demonstrate the Lenz’s law and effects of electromagnetically induced currents.
  • Setup : Mains 230 V AC operated, coil turn 768, Fuse rating 30A initial.
  • Rings : Aluminium (with slot & without slot), PVC, dimension OD 60mm ID 52mm, coil with bulb holder.
  • Remote : IR sensor, range 5-8 feet
  • Core : Dia. 30mm, length 305mm
  • 1 Ring Launcher (Advance)
  • 1 Software CD
  • 1 Iron core
  • 1 Adjustment collar
  • 1 Aluminum Ring
  • 1 Plastic Ring
  • 1 Coil with lamp
  • 1 Core holding ring
  • 1 Power cord
  • 1 Remote
  • Electromagnetic induction.
  • Magnetic flux.
  • Faraday laws.
  • Lenz’s law.
  • Eddy current.
  • Self induction.
  • Mutual induction.