AVT2741 / 2 B

Magnetic levitation relies on the floating of a metal object in the air. This is possible thanks to the magnetic field invisible to the human eye. One of the most important elements of a device that demonstrates this type of phenomenon is a system that allows the levitating body to be maintained in a specific, fixed position. In AVT 2741/2, the infrared beam creates a barrier obscured by the levitating object. Phototransistors were used as sensors. One of them works with the IRED diode, the other examines the level of external lighting. The system uses a limitation of the current flowing through the electromagnet (can be turned off) and an additional button for convenient switching off the coil.

The device is especially recommended for fans of physics and unusual phenomena

Selected parameters:

• IRED diode
• a set of two phototransistors
• ambient lighting compensation circuit
• current limiter flowing through the electromagnet
• power supply - 12 V
• in the set there is a printed circuit board, a set of elements ( without a mechanical part ) and documentation
  
  Detailed description in
  EdW 12/04