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Please help me to find a device with an op-amp application. and what is its role in that device. It could be cheap because we are planning to buy one for our project. ;D Thanks for the help. Godbless.

can you give me the link for the forum please? thanks! lol ;D

Yes sir, we are trying to power up the LED. But the LED is too dim when we apply mechanical forces. We tried 4 transducers in parallel but the LED is still too dim. I searched about Darlington Circuit, is it advisable to use this circuit to increase our current with battery?

@ Hero999 all of our ceramic transducers are in parallel.. We don't really have a schematic.. We just need some advice on how can we increase our current.. ???

We have a small project about piezo electric. We used ceramic transducers and our problem is that the current is too small. Our LED's are dull and not a bright as the normal brightness of LED's. Please lend us some advice on how to increase our current. Does Darlington Circuit really helps improve our current? When we apply force on our transducers we gain the ff. specs: -Voltage ranges from 2V - 40V AC -Current ranges from 1mA-6mA AC We really need some professional advice Thanks! ::)

Is it possible to put a Voltage Doppler to a 6V lead acid rechargeable battery that makes a 12V bulb or anything that lights. DC connection. pls help .. thanks (: And how much is a peizoelectric nowadays?