4 ms·
> The key thing they looked at (and still do look at) is the amplitude/travel distance of the bristle tips, and how that changes under load. It should stay stro
by johnchristopher 3y ago
> The key thing they looked at (and still do look at) is the amplitude/travel distance of the bristle tips, and how that changes under load. It should stay strong under light load, but collapse under heavy load (so that when you mash the thing way too hard into your gums, power transfer stops and your gums don't get brutalized). It's a surprisingly delicate balance.
Isn't that what the pressure sensor is supposed to be for ?
- exmadscientist 3y agoI'm describing the what and why, not the how. The older? better? models don't use or need any pressure sensor, it's all designed in to the resonant motor mechanism. The "new" pressure sensor is 100% marketing.