- #1
grasscut
- 51
- 1
Hi,
im doing a piezoelectric energy harvesting project with a standard harvestings circuit consisting of a full bridge rectifier, smoothing capacitor and a resistive load. I managed to get around 28V after rectification without connecting to a smoothing capacitor and load, but when i added a LED parallel to the smoothing capacitor, my voltage instantly falls to around 2.4V and remains the same. Can someone tell me why will my supply voltage from the piezoelectric dropped so much when a LED load is added?
any kind of help would be really appreciated! thanks
im doing a piezoelectric energy harvesting project with a standard harvestings circuit consisting of a full bridge rectifier, smoothing capacitor and a resistive load. I managed to get around 28V after rectification without connecting to a smoothing capacitor and load, but when i added a LED parallel to the smoothing capacitor, my voltage instantly falls to around 2.4V and remains the same. Can someone tell me why will my supply voltage from the piezoelectric dropped so much when a LED load is added?
any kind of help would be really appreciated! thanks