23 step attenuator - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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 21st May 2007, 10:42 AM   #1
diyAudio Member
 
Join Date: Apr 2007
Default 23 step attenuator

i have learned a lot from the devoted members of this forum. i have also read some good things about the vishay 23 step 90+ resistor attenuator. my question. i have seen some really good military grade switches on the web and wondered if a step attenuator made from one of them might be quite nice. they do not have 23 switching modes but 11-18 in the area we use most would work right??? now how far apart do you normally space the resistor values.
  Reply With Quote
Old 21st May 2007, 10:54 AM   #2
tbr is offline tbr  Switzerland
diyAudio Member
 
Join Date: Dec 2003
Location: Swiss Pampa
Well, I would suggest 3dB is the max. step you can conveniently use. With an 11-step att. this would lead to 30 dB attenuation, if you make the steps even bigger at the ends maybe some more.

With the 18-step one it should already vork well, using 2dB steps in the middle and increasing the steps towards the last 3 or 4 least loudest steps.

Take care that the switches don't have too much conducting material in the signal path, high current units are not the best choice here...
__________________
Thomas
  Reply With Quote
Old 21st May 2007, 12:33 PM   #3
diyAudio Member
 
Join Date: Apr 2007
i had read that the vishay switch in the 23 step unit was not of the best quality for repeated use. some of the ceramic switches made for the aerospace industry look to be very well made, inexpensive surplus and compact. i would need a 4 pole unit i assume for stereo use??? how do you suggest i configure the grounds???
  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
24 Step Attenuator poynton Parts 1 9th January 2008 07:26 AM
step attenuator conundrum tl507083 Parts 5 7th May 2007 03:40 PM
Series step attenuator Ipanema Solid State 14 17th November 2006 09:32 AM
Alps step attenuator kmtang Tubes / Valves 5 30th May 2005 11:51 AM
DIY 40 step attenuator, anyone interested in such??? Magura Parts 64 20th August 2004 03:25 AM


New To Site? Need Help?

All times are GMT. The time now is 11:44 PM.


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