Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

20k hz and beyond?
20k hz and beyond?
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 29th September 2013, 06:34 PM   #21
sreten is offline sreten  United Kingdom
R.I.P.
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

Its not difficult to knock up an oscillator with the classic 555 timer chip
that outputs a square wave at 22KHz. Minor extra circuitry to run the
whole thing off a 9V battery, as you only need a switching output to
drive the tweeter, i.e. you don't need an amplifier as such, just
switched 9V at 22KHz with enough current to drive the tweeter.

Long time since I did 555 stuff, you'll have to look it up, I
think an RC combo can be used to set the length of output.

rgds, sreten.
  Reply With Quote
Old 30th September 2013, 01:21 AM   #22
Stuey is offline Stuey  Australia
diyAudio Member
 
Join Date: Mar 2006
Location: Perth, Western Australia
Gee, you guys are nice! I'd have batted the mutt well before this stage. And I own a dog, so I'm not anti-dog. Mind you my dog never barks (literally, except when playing with his mates - the dogs he plays with). Even when someone knocks at the door etc. I couldn't stand it.
  Reply With Quote

Reply


20k hz and beyond?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Most critical frequency response area? 192 Hz to 384 Hz hebrer Full Range 20 11th February 2015 09:00 AM
50 hz motor at 60 hz momin Everything Else 4 22nd August 2008 04:53 PM
need help wana change 60-Hz twin-T notch filter to 279 Hz filter prorms Solid State 0 9th February 2008 11:38 PM
Ultra Low Hz below 15 Hz Richard Moon Class D 6 6th October 2006 04:48 PM
20K pots JoeBob Everything Else 0 13th June 2002 01:22 AM


New To Site? Need Help?

All times are GMT. The time now is 01:04 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki