OK guys, I've seen a lot of threads about this topic. I'm new here, and I wanna start talking about this.
One of the mains goal of this topic will be the design of the circuit and how to save the energy.
Since the Piezoelectric generates AC voltage, the first thing that we have to do is rectified that voltage. I've seen a lot of circuits with diodes. But I found one with Schottky diodes, apparently due to the forward voltage drop. After this, we have to think how to harvest the energy. So the common way is using a capacitor, but we have to keep in mind that capacitors save voltage, not current. So, it should be a way to keep the voltage with a good current. I've searching and I found a lot of circuits with transistors, some others with DC/DC converters. I'll leave a link here to one of them.
http://www.telefonica.net/web2/carloscossio/Harvest%20Energy%20Using%20A%20Piezoelectric%20Buzzer.pdf
The link above use a max 1675, so go and check it out.
My last goal with this project, is at least reach the way how to charge a battery. If I have a mistake, please, correct me. I'm not an expertise in this field. I know about electronics. But I've never though in something like this.
One of the mains goal of this topic will be the design of the circuit and how to save the energy.
Since the Piezoelectric generates AC voltage, the first thing that we have to do is rectified that voltage. I've seen a lot of circuits with diodes. But I found one with Schottky diodes, apparently due to the forward voltage drop. After this, we have to think how to harvest the energy. So the common way is using a capacitor, but we have to keep in mind that capacitors save voltage, not current. So, it should be a way to keep the voltage with a good current. I've searching and I found a lot of circuits with transistors, some others with DC/DC converters. I'll leave a link here to one of them.
http://www.telefonica.net/web2/carloscossio/Harvest%20Energy%20Using%20A%20Piezoelectric%20Buzzer.pdf
The link above use a max 1675, so go and check it out.
My last goal with this project, is at least reach the way how to charge a battery. If I have a mistake, please, correct me. I'm not an expertise in this field. I know about electronics. But I've never though in something like this.