How to Build a Magnetic Stir Plate

Step-by-Step Guide

1. 1

   Step 1: Mount the magnet to the PC Fan by gluing the washer to the top of the fan.

   Then place the magnet on top of the washer.
   
   The washer acts as an electromagnetic shield between the magnetic components of the fan and the mounted magnet. , You want the magnet to be as close as possible to the top of the enclosure.
   
   Some people use bolts with nuts and washers to raise the fan from the bottom of the enclose.
   
   NOTE:
   Keep in mind that the weight of the container of liquid may cause the top of the enclosure to sink. ,, Then connect the positive line from your jack to the on/off switch., Review the "LM317T Flowchart" and "Wiring Comments" images, and the LM317T Voltage Regulator Datasheetlink for specific wiring guidelines. , The
   0.1 µF capacitor is required if the distance between the DC power jack is greater than 6" from potentiometer.
   
   The
   1.0 µF capacitor is not necessary but is recommended to reduce transient response., Double check your connections and make sure wires are not touching inappropriately.
   
   Turn your potentiometer about halfway, plug in your 9V or 12V power supply and click the on/off switch if necessary.
   
   If it doesn't work, review the diagrams and try to determine what's wrong., Remove any pieces of wire, solder, or woodchips that may still be in the enclosure.
   
   And, tape any loose wires down as necessary.,
2. 2

   Step 2: Mount the fan to the enclosure.

3. 3

   Step 3: Mount the remaining components (DC power jack

4. 4

   Step 4: potentiometer

5. 5

   Step 5: on/off switch) to the enclosure.

6. 6

   Step 6: Start the basic wiring by adding the positive and negative wiring to the DC power jack.

7. 7

   Step 7: Voltage Regulator Pin Diagram Wire the Potentiometer

8. 8

   Step 8: LM317T Voltage Regulator

9. 9

   Step 9: Resistor

10. 10

    Step 10: and Fan together.

11. 11

    Step 11: Wire the Capacitors if necessary.

12. 12

    Step 12: Double Check & Turn it on.

13. 13

    Step 13: Add electrical tape to exposed wires.

14. 14

    Step 14: FINAL THOUGHTS.The Images do not use the 1.0 µF Capacitor because of the added build cost.

Detailed Guide

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