Go Back   Home > Forums > General Interest > diyAudio.com Articles

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
Comment
 
Article Tools Search this Article
Old 23rd October 2010, 07:00 AM  
Zen Mod and Spavleski is offline Zen Mod and Spavleski
diyAudio Member
 
Join Date: Oct 2010
Default The Poor Serbian Man's Optical Attenuator

A gadget made by Spavleski & Zen Mod
Article scribed by Zen Mod



Click here to read the entire article

Last edited by Variac; 2nd April 2011 at 12:15 AM.
  Reply With Quote
23rd October 2010
Manu's Avatar
Manu
diyAudio Member
Dear Sascha & Slobo ...




Great article ...
And a real pleasure to read

Sincerely admirative

Manu
Manu, masked agent of entropy & ZMs Čiko
24th October 2010
snusovic
diyAudio Member
I'm very impressed by the work you have done!

Bravo Majstori!

Poz iz Svedske
24th October 2010
ronwande
diyAudio Member
Neat idea. I have some of these devices so I breadboarded two in series. Enough current through the LEDs (also in series) to make the total resistance 5K more or less. Tap to ground just about 2.5K as expected. Applied 2 volts signal to the pot and measured distortion at the tap. 0.06% distortion at 1 KHz. It is largely third harmonic. This is about ten times the distortion through my home built system from CD all the way through to speaker terminals!

I'll stick with plain old pots, thank you.
25th October 2010
dady's Avatar
dady
diyAudio Member
Fantastic.
Esteban Bikic
13th November 2010
Atilla
diyAudio Member
Time to GB a few boards then
14th November 2010
Variac's Avatar
Variac
diyAudio Editor
Quote:
kudos for at least triple grammar and spell check work ; you boyz are the best

Toughest editing job so far, but the real ZM still shines through I think
23rd November 2010
wabun
diyAudio Member
The BDX53C transistor at power supply section heats up, case worst in split supply whereby it gets heated up tremendously even thru I put up heatsink. CHecked the circuit, all connection properly soldered. Can any one check and share the experience? Thanks
23rd November 2010
spavleski's Avatar
spavleski
diyAudio Member
Shunt supply will put all the current through the BDX53, if there is no load connected (that's the worst case for shunt regulator if we're talking about heating). If there is a load, part of the current will flow through it, and part through BDX53.
25th November 2010
wabun
diyAudio Member
thanks.. understood now
25th November 2010
spavleski's Avatar
spavleski
diyAudio Member
Glad to hear. Cheers.

Comment


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

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
Article Article Starter Category Comments Last Post
poor man's magneplanar tweeters. WrineX Planars & Exotics 31 6th March 2014 04:53 PM
Poor Man's Strad peace brainerd Multi-Way 75 14th August 2012 07:53 PM
Poor man's strad zimjj Multi-Way 3 22nd August 2009 01:12 AM


New To Site? Need Help?

All times are GMT. The time now is 10:12 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