It's the off-season for #cycling , so I did some measurements for a hub #dynamo and published them on my #blog.

No one on the 'net seems to show how voltage changes depending on load, so I measured that.

Results:
- a dynamo is not a actually well modeled as a current source
- voltage spikes will fry your #electronics , but you can prevent it

https://dorotac.eu/posts/dynamo/

#hacking #BikeTooter #cycling