Where can I find a piezo stack for a reasonable price?

[lucy_b14]

Hi

I'm planning an experiment in which I will try to generate power from a force applied to some piezo electric material (in fact it will be an impact with the ground).

I think I need to find a piezo stack, but where can I buy such a thing for a reasonable price? Does anyone have any ideas? (I'm not adverse to taking something apart to get hold of the stack)

I've heard of piezo buzzers and loudspeakers, but do these use stacks?

Any pointers would be much appreciated.

Thanks.

 

[berkeman]

Ack, there's a company that used to make piezo film sheets in all kinds of sizes...their name escapes me at the moment. In the mean time...

Google hit list for piezo film sheets:

http://www.google.com/search?source...&rlz=1T4GGLL_enUS301US302&q=piezo+film+sheets

Google hit list for piezo film sheets +"energy harvesting"

http://www.google.com/search?source...S302&q=piezo+film+sheets++"energy+harvesting"

I'll come back and post if I can remember the name of that company...

 

[Redbelly98]

Thorlabs sells a few different piezo stacks. The cheapest is $72:
http://www.thorlabs.com/thorProduct.cfm?partNumber=AE0203D04F

You might try looking on ebay or elsewhere for a lower price, but this gives you a brand and part # to search for.

Thorlabs' other piezo stacks:
http://www.thorlabs.com/newgrouppage9.cfm?objectGroup_ID=61

Good luck,

Mark

 

[berkeman]

Ack, there's a company that used to make piezo film sheets in all kinds of sizes...their name escapes me at the moment. In the mean time...

I'll come back and post if I can remember the name of that company...

Hah! I remembered. Mind like a steel trap!

Kynar Piezo Film. Marketed by Pennwalt Corporation at some point. A quick web search doesn't turn up much, so they might not be in business anymore.