The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: email@example.com (carltons)
Subject: Re: help reading datasheet for buzzer
User-Agent: NewsWatcher-X 2.2.3b2
NNTP-Posting-Date: Sun, 13 Oct 2002 02:18:21 GMT
Date: Sun, 13 Oct 2002 02:18:21 GMT
In article <3DA8B723.firstname.lastname@example.org>, Fred Bloggs wrote:
> Karel J. wrote:
> >>I'm trying to select a buzzer for use on a small tone generator board
> >>running at 5V. The board can generate DTMF and well as musical tones
> >>up to about 2.5kHz.
> >>I've found one I like, but I need some info on what the specs mean.
> >>Basically it says: 50Vp-p Max Voltage.
> >>Does this mean that I can run it at 5V but not above 50V?
> >>Datasheet is here if you want to take a look:
> > If you are running at 5 V, you had better look for a buzzer that works at 5
> > volt. they exist with an internal signal generator, and as a "speaker" (t.i.
> > you have to provide them with an squarewave voltage).
> > The one you have selected gives only specs at 10 Vpp at 2500 Hz?
> Wouldn't a bridge drive at 5V Vcc be 10Vpp? The output will be 80dB SPL
> @ 10cm and 2.5KHz, provided the driver can handle 16nF loading. The only
> info missing is the sound response as a function of frequency.
You are right about the bridge circuit. That could give you the required
SPL. The 2500 Hz is probably the resonant freq of this device. These
things are frequency flat like the Afghani mountains. :-) Your bandwith
is probably 400 Hz or so, but this is just a guess from experience.
BTW, 80 dbSPL is not all that loud, but at 2500 Hz it may be sufficient
for the application for most people.
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup