Difference between revisions of "Team:Aachen/Notebook/Construction Manuals/Stirrer"

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=Transistor IRLIZ44N=
 
=Transistor IRLIZ44N=

Revision as of 14:47, 18 September 2015


Materials Required

  • DC - Geared Motor
  • Neodymium magnets
  • Transistor IRLIZ44N
  • custom made 3D Structure
  • diode

DC - Geared Motor

The DC Geared Motor we use is a combination of 4:4:1 gears and a brushed DC motor. The motor is cylindrical, with a diameter just under 25 mm, D shaped output shaft which is 4 mm in diameter and extends 12.5 mm from the face plate of the gear box. This motor unit weighing 95 gms, has a speed of 1400 RPM d and 150 mAmps Current rating at 6V.

Aachen DCMotor.jpg
Geared DC Motor

Magnets and 3D structure

Neodymium cubic supermagnets of size 5 mm are fitted into a 3D structure on the motor, to create a magnetic field for the fish inside the bioreactor. The 3D structure is a platform to be fitted on the DC motor, having cubical holes to fit the magnets in.

Aachen StructureAndMagnet.png
3D Structure with magnets






Transistor IRLIZ44N

Aachen DC Transistor.jpg
Geared DC Motor
It is a single pulse avalanche rated MOSFET in an isolated package. It has a continuous Drain current of maximum 30 Amps and Drain to Source maximum withstandable voltage of 16 volts.





Circuit

The circuit uses a Transistor and a Diode to control the RPM value using a PWM pin from Arduino.

Aachen StirrerCircuit.jpg
Circuit Diagram for Stirrer Control

Assembly Video

Files

The files for the 3D structure can be found here : File:Aachen Stirrer3D.zip

The files for the Debug program can eb found here : File:Aachen StirrerDebug.zip

References