Embedded Files
Students will build and wire a power supply based on pre-manufactured components. They will need to measure components, design a case, crimp, solder and organize the cables and assemble the parts into the case. The final product is a current and voltage controllable power supply with a USB charging connector.
Learning Outcome: Designing case and assembling components .
Materials 2019:
- Banggood: AC 100V-240V DC 24V 4A 96W Power Supply Charger Converter Adapter, $7.7 for 1
- MonoPrice: Power Cord - NEMA 5-15P to IEC-320-C5, 18AWG, 10A, 3-Prong, Black, 3ft, $1.7 for 1
- Banggood: Winners® 5A DC Adjustable CNC Step Down Power Supply Constant Voltage Current LCD Screen Module - 1, $16.31 for 1
- Banggood: 5Pcs Dual USB Output 6-24V To 5.2V 3A DC-DC Step Down Power Charger Module Converter, $8.32 for 5
- Banggood: DANIU 10 Pairs 4mm Terminal Banana Plug Socket Jack Connectors Instrument Light Tools Black and Red, $3.39 for 10 pair
Total Costs without housing and wires: $27.72
Materials 2018:
- Power supply S-240-24 : Input 110/220VAC, Output: 24V, 10A.
- Please adjust the output of the power supply to not exceed 24V.
- USB voltage step down converter KSZ-3R33S: Input max 24V, Output 5V, 3A.
- Dual Banana Plug receptacle
- Power Cord receptale with fues
- Power cord
- Banana to alligator clip cables
You will need Inkscape or Solidworks to make the attachement plants.
If you decide to make a box one of the best and easiest Box Generators is on www.festi.info/boxes.py The Electronics Box module creates a solid box with removable lid.
There are many other approaches listed here: http://www.instructables.com/id/The-Ultimate-Guide-to-Laser-cut-Box-Generators/
You can use the Inkscape plugin Tabbed Box Maker (https://github.com/paulh-rnd/TabbedBoxMaker) to create the tabs but you will need to install it on your own computer. The files in the box generator package need to be installed in "Inkscape\share\extensions" . If you installed Inkscape from the Windows App store you need to follow these guidelines to find the location of the extension directory: http://www.thewindowsclub.com/windows-8-metro-apps-folder-location )
If you work with Solidworks it is useful to create templates for the slots and tabs and apply those to the 2D drawing before creating a 3D plates. Examples for 1/4 inch sheets and 8-32 screws are here: https://drive.google.com/file/d/1c4HW8tbbmE0gRn-6V00Mx_snPP-9eFi3 Unfortunately our sheets are 1/8 inch in thickness.
Assignment
Assignment
Create and enclose or attachment plate holding all parts. Wire then correctly. Please measure dimensions accurately and cut MDF sheets first before you use more expensive materials such as acrylics or plywood.
How to design and use T slots for square nuts are shown below. The dimensions on the right are for 1/4 inch plywood and number 8 screws. It will need to be adapted to the materials used for your case. Please make sure the through holes for the screws are holes not NOT slots.
Turn In & Grading
Turn In & Grading
Your team will need to create a programmable power supply.
Report abuse