- #1
lucy_b14
- 18
- 0
Hi
My project involves rectification of a voltage produced by a piezoelectric stack subjected to an impact. The voltage shall be rectified using a full wave bridge rectifier.
I aim to use a capacitor (in position of the smoothing capacitor) to store the energy harvested from the impact (simply because the device must fall from a certain height so it cannot be connected to any measuring equipment during its descent). The capacitor shall be disconnected following impact and connected to a volt meter so stored energy can be calculated.
My question is: does anyone have any suggestion as to how I can calculate required capacitor value? I have no idea of the frequency, current or voltage of the piezoelectric stack output, and these are likely to vary for different impacts.
I do know the voltage and current I require from the rectifier output - if that helps!
Any help would be greatly appreciated
Thanks
L
My project involves rectification of a voltage produced by a piezoelectric stack subjected to an impact. The voltage shall be rectified using a full wave bridge rectifier.
I aim to use a capacitor (in position of the smoothing capacitor) to store the energy harvested from the impact (simply because the device must fall from a certain height so it cannot be connected to any measuring equipment during its descent). The capacitor shall be disconnected following impact and connected to a volt meter so stored energy can be calculated.
My question is: does anyone have any suggestion as to how I can calculate required capacitor value? I have no idea of the frequency, current or voltage of the piezoelectric stack output, and these are likely to vary for different impacts.
I do know the voltage and current I require from the rectifier output - if that helps!
Any help would be greatly appreciated
Thanks
L