Finding theoretical impedance of acoustic transducer

Click For Summary

Discussion Overview

The discussion revolves around the theoretical calculation of impedance for an acoustic transducer based on known parameters of conductance and capacitance. Participants explore the implications of these parameters and the need for additional information to accurately determine impedance.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant asserts that impedance can be calculated from conductance and capacitance, but questions whether these parameters are in series or parallel and what the transducer's equivalent network is.
  • Another participant agrees that impedance can be calculated but emphasizes the need for more information about the transducer, suggesting that inductance may also be significant and questioning the frequency range of operation.
  • A third participant mentions that assumptions made by the data providers regarding the importance of certain parameters could affect the accuracy of the impedance calculation.
  • A reference to electromechanical acoustic circuit analysis is provided as a relevant method in engineering.

Areas of Agreement / Disagreement

Participants express differing views on the sufficiency of conductance and capacitance for calculating impedance, indicating that multiple competing views remain regarding the role of inductance and the need for additional information.

Contextual Notes

Limitations include the dependence on the configuration of the transducer (series or parallel), the potential significance of inductance, and the frequency range of interest, which remain unresolved.

nauman
Messages
98
Reaction score
5
Hi all

If we have an acoustic transducer and values of its two parameters are known, i.e conductance and capacitance, is it possible to calculate impedance using these two parameters?

Thanks
 
Engineering news on Phys.org
Yes.
Are those parameters in series or in parallel ?
What is the transducer equivalent network ?
 
nauman said:
Hi all

If we have an acoustic transducer and values of its two parameters are known, i.e conductance and capacitance, is it possible to calculate impedance using these two parameters?

Thanks
It's hard to say without knowing more about your transducer. Of course we can calculate the impedance from your two parameters (after you answer @Baluncore's question), but is that the actual impedance of the transducer? I suspect that inductance matters too, it usually does. Over what frequency range? Often, if you are working away from resonance, you can ignore some parameters. The people that gave you that data may have made some assumptions about what is important. They may also have designed it to be used at resonance, in which case the resonant frequency and the capacitance will determine the dominant inductance.

So, basically, we need to know more to answer your real question.
 
Last edited:
  • Like
Likes   Reactions: alan123hk

Similar threads

  • · Replies 11 ·
Replies
11
Views
2K
Replies
19
Views
3K
Replies
23
Views
4K
  • · Replies 2 ·
Replies
2
Views
1K
Replies
10
Views
3K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 20 ·
Replies
20
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
9
Views
3K
  • · Replies 1 ·
Replies
1
Views
3K