Piezo Tweeter for Dogs - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 16th February 2007, 09:55 PM   #1
diyAudio Member
 
Gold_xyz's Avatar
 
Join Date: Dec 2005
Location: Italy
Default Piezo Tweeter for Dogs

Hi people

I have necessity to build a kit similar to this
http://www.siliconchip.com.au/cms/A_101145/article.html
For the dog of my neighbor. (I cannot sleep anymore )

what type of piezo tweeter can I use?
which is it the maximum power that I can use?

I have to look for datasheet of the manufacturer..
__________________
My English originates from here
  Reply With Quote
Old 17th February 2007, 11:51 AM   #2
Geoff H is offline Geoff H  Australia
diyAudio Member
 
Join Date: Oct 2006
That project used the Motorola CTS Bullet tweeter, KSN1005, which has been discontinued. It was rated at 94dB/watt (ref to 8 ohm) The KSN1038 was the replacement.

Regards,
Geoff.
  Reply With Quote
Old 26th February 2007, 10:37 PM   #3
gychang is offline gychang  United States
diyAudio Member
 
Join Date: Feb 2005
Location: Davis, California
Default Re: Piezo Tweeter for Dogs

Quote:
Originally posted by Gold_xyz
Hi people

I have necessity to build a kit similar to this
http://www.siliconchip.com.au/cms/A_101145/article.html
For the dog of my neighbor. (I cannot sleep anymore )

what type of piezo tweeter can I use?

I have to look for datasheet of the manufacturer..

I have the same problem with the neighbor's dog.

The piezo looks similar to this for $1.44 /each. I used these for my DIY speaker recently and so far impressed.

http://www.partsexpress.com/pe/showd...number=270-011

gychang
  Reply With Quote
Old 26th February 2007, 11:01 PM   #4
diyAudio Member
 
FastEddy's Avatar
 
Join Date: Jun 2006
Location: North Californie
I made something similar for the garden ... to keep the gophers away

It worked fine, the piezo driver sat on, aimed into a piece of 3/4" EMT electrical tubing, driven into the ground 6+ feet. By setting the frequencies a bit higher and making it simply oscilate instead of "warble" ... around 28K Htz., then it didn't bother the dog at all. The theory is that it messes with the gophers' sex life, somehow, so they go away. The ants all went away as well.
  Reply With Quote
Old 27th February 2007, 07:28 AM   #5
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
That's great is it drives away ants!

I could sure use one for m neighbor's yappy dog - all day long. Then I'll chase ants. Does the orginal use a warble tone?
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 28th February 2007, 08:40 PM   #6
diyAudio Member
 
Graham Maynard's Avatar
 
Join Date: Dec 2003
Location: UK
This was built to put beside an open gateway to keep dogs out, and it is still wrongly labelled on this website.

http://www.zen22142.zen.co.uk/Circui.../insecrep.html

Don't get in line with the tweeter. You can't hear it but it feels very unpleasant.
  Reply With Quote
Old 28th February 2007, 10:52 PM   #7
diyAudio Member
 
FastEddy's Avatar
 
Join Date: Jun 2006
Location: North Californie
No warble, just oscilation ..."... simply oscilate instead of "warble" ... around 28K Htz., then it didn't bother the dog at all. ..."

If freq of oscilation is high enough, dogs don't care ... just bugs and gophers.
  Reply With Quote
Old 1st March 2007, 06:35 AM   #8
diyAudio Member
 
Graham Maynard's Avatar
 
Join Date: Dec 2003
Location: UK
Only there as an example !
Puts 24V square across the piezo without transformer.

I had one with three Motorola piezos and LM3900 warble driving a capacitor firing transistor npnp arrangement and step-up transformer (pcb about 1 x1 x2 inches) each but can't find the circuit I developed.
The beats were unbearable.

Was being designed as an airport bird scarer, one box could scare birds up to 1/2 mile.

Motorolas very directional at hf, thus if aimed into a neighbours garden will work over a very narrow range.
  Reply With Quote
Old 1st March 2007, 06:29 PM   #9
diyAudio Member
 
FastEddy's Avatar
 
Join Date: Jun 2006
Location: North Californie
" ... Was being designed as an airport bird scarer, one box could scare birds up to 1/2 mile. ... Motorolas very directional at hf, thus if aimed into a neighbours garden will work over a very narrow range. ..."

Yes they are as are most higher freq. drivers. (If memory serves, something like 15 degrees off axis was max radiated pattern, narrower at higher freq.) = good for local doggie go go getter as it won't interfer too much with the whole neighborhood's other doggies.

Birds!! ... at airports !! I would have thought something more like a recording of the bigger hawks, played back would do it for the little birdies, pigeons, etc. ... and I would imaging you would have trouble with non-omnidirectionallity of the drivers as above = same as for doggies. (Is there a word like non-omnidirectionallity ? ... maybe it should be just "directionality" ...)

[Off topic a little: I have always wanted to record the Hooded Monk Finch ond some other Finch songs ... mostly way above human hearing range, 12K Htz. and up to above 25K Htz. ... digitally, then using some kind of frequency division technic to drop their tunes [play list?] down to a human listenable bandwidth without out losing content, etc. ... anyone every hear about doing anything like this?]
  Reply With Quote
Old 1st March 2007, 07:17 PM   #10
diyAudio Member
 
Graham Maynard's Avatar
 
Join Date: Dec 2003
Location: UK
The bird scarer output was to be mechanically scanned through specified arcs.

Bird song.
There is already a device available for listening to bats in real time. It uses a special microphone plus a frequency changer to shift the frequency range down to audible.

Might be able to do a WebSearch for it.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Piezo tweeter help ivorcally Multi-Way 9 22nd May 2009 01:47 PM
Piezo tweeter to my BIB? gychang Full Range 8 13th November 2006 04:28 PM
piezo tweeter connection biso Multi-Way 5 5th August 2004 09:52 AM
Which value resistor to use with piezo tweeter Bull Multi-Way 0 14th January 2003 08:56 PM
Piezo Tweeter confusion Bull Multi-Way 3 5th December 2002 11:08 PM


New To Site? Need Help?

All times are GMT. The time now is 09:14 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2