Breaking News
Comments
Newest First | Oldest First | Threaded View
nhawryluk
User Rank
Rookie
re: Piezoelectric fans and their application In electronics cooling
nhawryluk   10/25/2011 9:31:00 PM
NO RATINGS
I have seen these work. They are efficient. I would like to have some cubic in of air per $ figures compared to fans. My biggest question is the vibration frequency, resonance and harmonics. What kind/how much structure borne noise is generated. Do these have to be isolated fromt he chassis to prevent SBN transfer?

GREAT-Terry
User Rank
CEO
re: Piezoelectric fans and their application In electronics cooling
GREAT-Terry   7/5/2011 4:41:59 AM
NO RATINGS
The question is whether such a movement of air can carry heat away from the target better than a rotational fan. More data should be shown. I also agree with katgod that the vibration stuff tends to break over time. How reliable this kind of fan can be?

Gayatri Kumar
User Rank
Rookie
re: Piezoelectric fans and their application In electronics cooling
Gayatri Kumar   6/12/2011 10:42:35 AM
NO RATINGS
Intresting to know how the sound is suppressed when it is vibrating. Wind is constant motion of air a particular direction. How this back and forth movement is imparting force on air particles in one direction only ?

Bob Lacovara
User Rank
Rookie
re: Piezoelectric fans and their application In electronics cooling
Bob Lacovara   6/8/2011 4:08:22 PM
NO RATINGS
PZ operated devices aren't new, nor are fan applications. For all sorts of interesting stuff, see the "Measurements Specialties" site. One of the interesting characteristics of piezo materials is that they tend to be voltage-operated. Another is that both "stiff" devices (lithium tantalate) and "flexible" devices (polymer piezo) materials are widely available. Ultrasonic transducers have been made for decades with both types. Now, some questions: how much power per how much air moved? And what is that ratio for a conventional rotating fan? How do they do for weight? Would like to see some numbers.

katgod
User Rank
Rookie
re: Piezoelectric fans and their application In electronics cooling
katgod   6/8/2011 3:02:59 PM
NO RATINGS
The part that is bending seems destine to break, I wonder what the longest duration for one of these fans with a reasonable output has been?

prabhakar_deosthali
User Rank
CEO
re: Piezoelectric fans and their application In electronics cooling
prabhakar_deosthali   6/7/2011 3:12:56 PM
NO RATINGS
This invention, when developed fully may lead to what would be called as static fans, fans without any rotating parts. And that kind of a thing would a revolutionary one , just those pulsating blades of your ceiling or a table fan!

inakito
User Rank
Rookie
re: Piezoelectric fans and their application In electronics cooling
inakito   6/7/2011 7:12:26 AM
NO RATINGS
It may work but a very smart power consumption of chip to be cooled. Fan shold have a inteligent control (not always on) and an storage energy for fan may be needed.

agk
User Rank
Rookie
re: Piezoelectric fans and their application In electronics cooling
agk   6/6/2011 11:13:15 AM
NO RATINGS
By reading this article i remember my hand fans. Whenever there is a power cut we use hand fans now and then. This device can replace hand fans if these prove to be highly energy efficient.

_hm
User Rank
CEO
re: Piezoelectric fans and their application In electronics cooling
_hm   6/6/2011 3:28:28 AM
NO RATINGS
This is a good concept. But cooling may not be proper application. It may be useful for other applications.



EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Tiny Kickstarter MCU Board Provides 'Smart Fusion' for IoT Systems
Max Maxfield
2 comments
Just a few minutes ago as I pen this words, I received an email from my chum Mike Hibbert, who is a columnist for the computer and electronics hobbyist magazine Everyday Practical ...

EDN Staff

11 Summer Vacation Spots for Engineers
EDN Staff
20 comments
This collection of places from technology history, museums, and modern marvels is a roadmap for an engineering adventure that will take you around the world. Here are just a few spots ...

Glen Chenier

Engineers Solve Analog/Digital Problem, Invent Creative Expletives
Glen Chenier
15 comments
- An analog engineer and a digital engineer join forces, use their respective skills, and pull a few bunnies out of a hat to troubleshoot a system with which they are completely ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
46 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)