What is the Relationship Between Piezoelectric Materials and Electrical Output?

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Discussion Overview

The discussion centers on the relationship between piezoelectric materials and their electrical output, specifically exploring the maximum electrical output achievable from these materials under applied mechanical stress. Participants inquire about examples, data tables, and operational parameters related to the electrical output generated by piezoelectric materials.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant asks about the maximum electrical output from piezoelectric materials when a force of 1N is applied, seeking specific examples or data tables.
  • Another participant notes that piezoelectric solids produce low-current voltage pulses during deformation but does not provide specific data tables.
  • A third participant references a Wikipedia article on piezoelectricity, suggesting it contains discussions and links to potential data sources.
  • One participant shares a link to a datasheet for a small energy harvesting device, indicating that realistic currents are typically in the range of 50-100µA.
  • Another participant mentions simple linear equations for piezo generators that utilize different methods of applying mechanical stress.

Areas of Agreement / Disagreement

There is no consensus on specific data or maximum outputs, and multiple viewpoints regarding the electrical output of piezoelectric materials remain present.

Contextual Notes

Participants have not provided specific assumptions or limitations regarding the conditions under which the electrical output is measured, nor have they resolved the mathematical relationships involved.

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hello!

what is the maximum of electrism we can get from piezoelectric materials? can you give me some examples, or are there any tables, showing for each gram of piezoelectric material, applied a force of 1N, we get 1 ampere constant(?) current or something?

thanks!
 
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Piezoelectric solids give a low-current voltage pulse as they are deforming. I don't know of any tables.
 
The Wikipedia article on piezoelectricity has discussions. The reference links in the article point to places where you might find the data you seek.
 
This is a typical small 'energy harvesting' device operational parameters.
http://www.mide.com/pdfs/Volture_Datasheet_001.pdf

Expect to see currents in the 50-100uA range with realistic loads.
 
Last edited by a moderator:
This is a reference to simple linear equations for piezo generators using different methods of applying a mechanical stress.

tech2intropiezotrans22.jpg
 

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