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EEVblog 1400 - Hard Drive Micro Actuators are AMAZING!

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EEVblog:
Dave takes a closer look the micro actuator used in the 6TB Western Digital RED hard drive.

Brumby:
@EEVblog   Any luck with that laser displacement device you mentioned in YouTube comments??

Kleinstein:
The piezo actuators also work as sensors. So if connected right, the pizos should show a voltage in response to the mechanical force on the tip. This works really nice with the piezo discs from beepers - can be used for small experiments.
Chances are good to see the response the other way around: e.g. scope to the contact and some variable force to the tip.

I would expect the piezos to extend / contract in the longitudinal direction.

dynorat:
Dave nice video i do have a ? what do you know about the  aluminum-air battery would be a battery battery 

EEVblog:

--- Quote from: dynorat on June 20, 2021, 03:22:58 pm ---Dave nice video i do have a ? what do you know about the  aluminum-air battery would be a battery battery
--- End quote ---

Nothing really, sorry.

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