Vibration motor

[MrEmbedded]

Hi,
Im currently involved in a product development. The product is comprised of several vibration nodes. Each node shall be controlled with respect to frequency and intensity.

The requirements are:
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Frequency range: 5-400 Hz (might be modified to ~100-250 Hz)
Intensity: Controllable
Size/design: a flat design in preferred, height shall not exceed 15 mm.

Does anyone know a good supplier/retailer of a ready to use module for this purpose?

Kind regards,
mr_embedded

 

[ScottyUK]

'Controllable' conveys nothing about intensity other than you wish to vary it. State your requirement in engineering units as a range from minimum to maximum and maybe someone can help.


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If we learn from our mistakes I'm getting a great education!

 

[MrEmbedded]

I'm sorry if my explanation arises confusion. However am I not interested in a specific change, the product's use is only going to be used to detect a change in intensity. So if it doesn't matter if it's controllable in the range of 0-15 W or 0-15 nW. But, I dont want it to be a fixed intensity, and off and a marked intensity is not good enough either. I want a continuous range. Sorry if this was even more confusing, or if my flawed English makes it not understandable.

Kind regards,
MrEmbedded

 

[Skogsgurra]

Please understand that we cannot possibly hint in any direction from those specifications. Are the 0-15 nanowatts realistic? That is down in thermal noise, more or less.

I doubt if you can find anything prêt à porter. A coil and a piece of Neodym magnet is what comes to mind. There are specialised coil winders that make such things at an amazingly low cost.

Gunnar Englund

http://www.gke.org

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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...

 

[MrEmbedded]

Gunnar Englund,
We are still in an early phase of the product development so there is no specification. I did left the range open and totally unspecified to get answers like the one you gave about a coil and Neodym. Thanks a lot. Just bomb me with suggestions, all solutions are welcome.

Let me redefine my requirement: Not a fix intensity.

Regards,
MrEmbedded