C
Christopher Cole
- Jan 1, 1970
- 0
David,
Making an effective piezo drive circuit is about 10% of the work. The
resonant cavity design and mounting technique of the piezo is the other
90%. You need to know how the piezo will vibrate at your selected
(resonant) frequency. The mounting points should be at the vibrational
nodes of the piezo disc, which may be at the outer edge of the disc, or
somewhere between the edge and the center of the disc. You need to know
how your piezo disc will vibrate. The amount of airspace in your cavity
is also an important factor, as well as the port aperture. In many
ways, it is a lot like speaker enclosure design.
Check out Goldmine Electric, they will send a free driver schematic
if you buy one of their piezo discs:
http://www.goldmine-elec-products.com/prodinfo.asp?number=G9303
(see their 'detailed description' on that page)
They supply their driver schematic with other piezo discs they sell as
well. I have not seen their schematic, myself. I would like to see it.
Take care,
-Chris
Making an effective piezo drive circuit is about 10% of the work. The
resonant cavity design and mounting technique of the piezo is the other
90%. You need to know how the piezo will vibrate at your selected
(resonant) frequency. The mounting points should be at the vibrational
nodes of the piezo disc, which may be at the outer edge of the disc, or
somewhere between the edge and the center of the disc. You need to know
how your piezo disc will vibrate. The amount of airspace in your cavity
is also an important factor, as well as the port aperture. In many
ways, it is a lot like speaker enclosure design.
Check out Goldmine Electric, they will send a free driver schematic
if you buy one of their piezo discs:
http://www.goldmine-elec-products.com/prodinfo.asp?number=G9303
(see their 'detailed description' on that page)
They supply their driver schematic with other piezo discs they sell as
well. I have not seen their schematic, myself. I would like to see it.
Take care,
-Chris
