I am a high school student and have no experience with piezoelectricity but I’m working on a piezoelectric shoe.
My plan, initially, was to connect piezoelectric transducers in parallel and solder the two end points to a full wave bridge rectifier and the DC current would be used to charge a rechargeable battery pack or the sort.
(Courtesy of the Internet)
But after searching on the internet ive been told that I’d require a separate bridge rectifier for each transducer (because of actuation problems)!!
- Is this true?
- So the following setup wouldn’t work?
Thicker red and black wires from transducers :-
The aim of my project is to create electricity and though the output current may be low, I’m not really concerned about that.
The justification I was given for having separate bridge rectifiers for each transducer was that they can, but don’t always, cancel each other’s power outputs (and this was from a person who has done it, I think he has an instructable on this)
From this link I gather that the piezo elements have to have the same frequency and voltage and should be in phase. I presume the frequency refers to the resonant frequency but frankly I have no idea.
And how would it be possible to modulate all of their frequencies, wouldn’t they be slightly different as pressure is applied to them? I think I am misunderstanding something fundamentally and would like clarification.
Ps: the transducers have the same (resonant) frequency