Month: July 2015

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Open-Source Induction Furnace Design Log 1

*NOTE: This is not a final design yet*

I along with a team started this project in the fall of 2014 and it is almost complete. The goal is to melt aluminum and steel for researching metal alloys. I don’t even know where to begin on this project because there are so many parts and systems. I guess I will start with a block diagram. This design is based off an instructable by Bayley Wang.

Continue reading “Open-Source Induction Furnace Design Log 1”

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100W LED Driver V2 Design Log 1

This second version of the led driver will improve the design of version 1.

  • The connectors feature a quick disconnect capability
  • A 5A mini-blade fuse on the +48V side has been added for extra safety
  • The BOM cost has been reduced
  • Current selection will now just require a jumper change, way better than soldering/de-soldering resistors
  • This version will feature an isolated PWM input to avoid any ground issues from the controller to the 48v supply
  • The current selection ranges will now be 3.0A,3.5A, and variable from 0A – 3.5A using a potentiometer
  • The controller was changed from the TI LM3409HV to HV9910CSG from Microchip
  • The PCB design program was switched from Eagle to KiCad. Continue reading “100W LED Driver V2 Design Log 1”