Voltage generated by a vibrating coil around a magnet

Click For Summary
The voltage generated by a vibrating coil around a magnet is influenced by the magnetic field, coil geometry, and the amplitude and frequency of vibration. To establish a function for voltage based solely on amplitude and frequency, one must know the magnetic field strength and the coil's characteristics. The discussion also touches on the conversion of sound wave amplitudes and frequencies into electrical signals in dynamic microphones, emphasizing the importance of inertia in this process. Accurate relationships between these variables may require empirical measurements and potentially complex numerical simulations. Understanding these dynamics is crucial for applications in audio technology and electromagnetic systems.
V0ODO0CH1LD
Messages
278
Reaction score
0
Can I get the voltage generated by a vibrating coil around a magnet as a function of the frequency and amplitude of the vibration (given all necessary informations about the coil and magnet)? What would that function be? Also, what information about the coil and magnet would be sufficient and necessary to make this voltage a function of just the amplitude and frequency of the vibration?

Thanks!
 
Physics news on Phys.org
You will need to know the magnetic field produced by the magnet so you can calculate how the flux changes through your coil.
The voltage will be a function of time. The amplitude will depend on the frequency and amplitude of vibration as well as the magnetic field . And geometry of the coil, too.
 
I was actually wondering about the rate of conversion between amplitudes and frequencies of sound waves and electric signals when the conversion is done by a dynamic microphone. Like if I was talking in a certain frequency with a certain amplitude into one of these microphones what would be the voltage measured on the other end (without amplification)? Preferably without talking in terms of decibels, since I want the relationship between frequencies, amplitudes and voltage.. talking in terms of decibels would just be an unnecessary mid-step.

Also, all the information about the magnet and the coil would be that of a magnet and coil inside a regular dynamic microphone (which I can't find references anywhere).
 
V0ODO0CH1LD said:
I was actually wondering about the rate of conversion between amplitudes and frequencies of sound waves and electric signals when the conversion is done by a dynamic microphone.
That rate of conversion should mostly depend on inertia of oscillating masses in the system
 
V0ODO0CH1LD said:
Also, all the information about the magnet and the coil would be that of a magnet and coil inside a regular dynamic microphone (which I can't find references anywhere).
Then I am afraid you will have to measure the voltages in order to find these relationships.
Anyway, it will be probably quite complicated even if you know the fields and you will end up by doing numerical simulations.
 

Similar threads

Undergrad How induction works within a coil (nuances of it)
  • · Replies 6 ·
Replies
6
Views
2K
High School Understanding magnetic flux change during the falling of magnet
  • · Replies 1 ·
Replies
1
Views
2K
High School Antenna induction, oscillating circuit generating EM Waves
  • · Replies 6 ·
Replies
6
Views
2K
Undergrad Electrical characteristics of a solenoid coil
  • · Replies 10 ·
Replies
10
Views
1K
Undergrad Coil Around A Tube - Iron Cylinder Inside Tube - How Many Turns Needed?
  • · Replies 27 ·
Replies
27
Views
3K
Graduate What is Exponent b in Voltage-to-Area Flaw Relationships?
  • · Replies 7 ·
Replies
7
Views
660
Undergrad Quantifying the magnetic force on a magnet moving through a coil?
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Mutual inductance in a transformer
  • · Replies 16 ·
Replies
16
Views
4K
Undergrad Iron core barely boosting field strength
  • · Replies 43 ·
2
Replies
43
Views
7K
Undergrad How Does a Vibrating Sample Magnetometer Calculate Magnetic Moment?
  • · Replies 2 ·
Replies
2
Views
1K