I was wondering if you could share how you came up with the power circuit for the chess pieces. I’ve tried looking for resources on wireless power transfer, but I have yet to find a good source of info on it.
I found the same problem when starting on this idea, the circuits you can find are usually very inefficient and can only power a LED. Mostly by experimenting with different drivers, coils and drive frequencies – the signal generator’s driven them at everything from 20khz to 300+ at time ;), it’s been through many shapes and styles of coil, at one point I used a spiral coil that could be etched on a double sised PCB but it wasn’t efficient enough at smaller diameters. Smallest coil I’ve used for nixies was just over 15mm. The driver circuit is the easiest part…..
Lucas
28 Jun 2012I would absolutely love to purchase one of these kits you are assembling. Are you already sold out? What should I do to contact you about it?
Tony
28 Jun 2012Hi,
I’m hoping to post some prices and availability later this evening, once I complete the site move.
Mr. Cruz
29 Jun 2012Hey Tony. Awesome project!
I was wondering if you could share how you came up with the power circuit for the chess pieces. I’ve tried looking for resources on wireless power transfer, but I have yet to find a good source of info on it.
Tony
29 Jun 2012I found the same problem when starting on this idea, the circuits you can find are usually very inefficient and can only power a LED. Mostly by experimenting with different drivers, coils and drive frequencies – the signal generator’s driven them at everything from 20khz to 300+ at time ;), it’s been through many shapes and styles of coil, at one point I used a spiral coil that could be etched on a double sised PCB but it wasn’t efficient enough at smaller diameters. Smallest coil I’ve used for nixies was just over 15mm. The driver circuit is the easiest part…..
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