Hi all, I want to build an energy harvesting circuit using LTC-3588 and piezoelectric. However, I am new to this area. I am wondering if anyone has done this before and can share their circuits and experience me? The LTC-3588 module and piezoelectric that I am using are below:




Any help is appreciated! Thank you!

 

The piezo disk you have is not a good candidate for energy harvesting, you would be lucky to harvest feeble microwatts from this setup.

Check out the link below:

https://www.mide.com/pages/piezo-po...0c458d0b|92a41f89-ef00-41a3-b79f-2d1dfcc43163

Note that the most expensive one ($300!!!) still only cranks out 19 mW- and you know this is a best-case marketing lie as well.

 

Hi Sensacell, Thanks for the reply, I will look into different Piezo Disk. However, in any chance do you know how should I connect them with the LTC 3588? I am trying to build a circuit. Thank you.

 

However, in any chance do you know how should I connect them with the LTC 3588? I am trying to build a circuit.

The manufacturer's data sheet for the LTC3588 shows how to connect the chip and explains everything you need to know in order to use it.

 

The manufacturer's data sheet for the LTC3588 shows how to connect the chip and explains everything you need to know in order to use it.

Thank you! I am able to get up to 2.5V by continues bend the piezo disk.

 

I am also thinking of using Piezo Disk to recharge a battery. Does any of you have any experience about it and willing to share with me? Thank you.

 

I am able to get up to 2.5V by continues bend the piezo disk.

But how much current can you draw from that? 'Very little' is the answer. It will take you forever and a day to charge a battery .

 

But how much current can you draw from that? 'Very little' is the answer. It will take you forever and a day to charge a battery .

I need it to recharge the 6V batteries probably (4*AAA batteries), it doesn't have to have fast recharging speed. It will be used on a device that is continuous vibrating. The device will only be turn on about once per fortnight, a few minutes each time, which only consume very little power, what I want to do is to make sure the device can last long.

 

It will be used on a device that is continuous vibrating. The device will only be turn on about once per fortnight, a few minutes each time

What causes it to vibrate continuously?
Let's do some sums.
Assume each AAA cell has a 1000mAh (i.e. 1Ah) capacity. It therefore stores 1.5 x 1 Watt-hours of energy.
A vibrating piezo disc of the type shown will typically provide a few micro-Watts of energy.... let's be generous and say 10uW.
Therefore to charge one AAA cell fully using the piezo would take 1.5/10^-5 = 150000 hours = ~17 years. However, if your device is on only briefly and occasionally it should be possible to keep the cell 'topped up', providing the device average power consumption is less than the cell's continuous output.

 

Thank you! I am able to get up to 2.5V by continues bend the piezo disk.

hi. may i know how you connect the circuit to get the output up 2.5v?

 

since im also using ltc 3588. i hope u can help me

 

The manufacturer's data sheet for the LTC3588 shows how to connect the chip and explains everything you need to know in order to use it.

Can you re-upload the link for the manufacturer's data sheet?

 

Can you re-upload the link for the manufacturer's data sheet?

Please note that you can find this yourself, simply by doing a Google search on the part number. Searching for "LTC3588" gives a link to the data sheet:


There's no need to ask people for a link to any electronic component's data sheet, when you can easily find it yourself through Google.

Anyway, here it is:

https://www.analog.com/media/en/technical-documentation/data-sheets/35881fc.pdf