The Stamp TEG electrical system is coming along really well. Over the last couple months, we've made great progress. All major components have been designed, prototyped, and successfully tested on our bench. We are now working on moving beyond these development prototypes and integrating the whole electrical system into the Stamp device itself.
Our first quick test the night we finished the rough prototype, showing the TEG output being conditioned to 5V.
The electrical system consists of four main areas that allow us to: condition the TEG output, direct it to our storage solution, condition the storage system output, and allow line voltage input (for when you're charging from a wall socket, not from heat). The system is flexible enough to allow us to run in a variety of heat conditions, producing anywhere from 2.5 to 6 volts as raw output. This means that even low grade heat sources can be used to give your phone a boost.
The system is also passively intelligent. That means two things: we've designed it to protect your connected devices and these protections will not consume useful power. The advantage is that more power is going right to your charging device, rather than being siphoned off to run a power management system.
Our charged storage system powering an iPhone
The next challenge is getting this package shrunk and integrated into our device, while maintaining our rigid standards for operation in extreme environments. The electrical system, like the entire device, must remain shock proof, water resistant to large depths, and able to operate in any temperature our customers can. We are on track to have our next generation prototype devices (V2) ready, along with the full electrical system, by the end of year.
- Team Stamp