B
Brian
- Jan 1, 1970
- 0
Anybody know of some smaller but LOUD buzzers? Self drive, external drive,
not important. Mostly size and output.
not important. Mostly size and output.
Anybody know of some smaller but LOUD buzzers? Self drive, external drive,
not important. Mostly size and output.
Anybody know of some smaller but LOUD buzzers? Self drive, external drive,
not important. Mostly size and output.
Fred said:Which Wal-Mart is the best one to go to in Dayton?
Anybody know of some smaller but LOUD buzzers? Self drive, external drive,
not important. Mostly size and output.
If you want a Piezo in Dayton you go to Mendelson's
http://www.meci.com/ Better yet, go to their store and look at all the
electronics they don't catalog.
If you have a low voltage source you can still get a fair bit of bang byAnybody know of some smaller but LOUD buzzers? Self drive, external drive,
not important. Mostly size and output.
Anybody know of some smaller but LOUD buzzers? Self drive, external drive,
not important. Mostly size and output.
Piezos are the acoustic scourge of the electronics age. Nasty little
things. It's not hard - fun, actually - to make bell, gong, wind-chime,
bird-chirp, explosion, or other more interesting sounds with a speaker.
Anybody know of some smaller but LOUD buzzers? Self drive, external drive,
not important. Mostly size and output.
Spehro Pefhany said:Smaller than *what*? A breadbox? And how LOUD is LOUD to you? 85dbA at
10cm? 105dBA at 30cm?
Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
[email protected] Info for manufacturers:
http://www.trexon.com
Embedded software/hardware/analog Info for designers:
http://www.speff.com
Spehro said:Big hamfest there, no?
Best regards,
Spehro Pefhany
How old are you? Maybe you don't hear so well any more. If so, try toLoud as in as loud as they get. Real screamers. I find alot in that
85-90dB range to be way too quiet.
Have you measured 85-90 dB? These things use a resonant cavity
(Helmholtz resonator) to boost output a lot. If the piezo is even a bit
off-tune with the cavity resonance the output drops considerably.
How old are you? Maybe you don't hear so well any more. If so, try to
find a product with a lower frequency (between 1 and 2 kHz), which is
likely to be more costly because they are made in much smaller
quantities).
Have you measured 85-90 dB? These things use a resonant cavity
(Helmholtz resonator) to boost output a lot. If the piezo is even a bit
off-tune with the cavity resonance the output drops considerably.
Motorola used to make 4 inch piezo tweeters. These work even better.
Even someone with hearing protectors thinks its too loud.
I read in sci.electronics.design that Ken Smith
Yes, we could get around 105 dB SPL at 1 metre anechoic. But they were
not very reliable; in general, not just in that application. And the
linearity was conspicuous by its minuteness. (;-)
Anybody know of some smaller but LOUD buzzers? Self drive, external drive,
not important. Mostly size and output.