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

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Tri Dummy Load
Tri Dummy Load
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
Thread Tools Search this Thread
Old 25th February 2009, 01:14 AM   #1
raudio1969 is offline raudio1969  United States
diyAudio Member
Join Date: Sep 2007
Location: N38
Default Tri Dummy Load

I built this dummy load which uses only two resistors per channel and, depending on the position of the toggle switches, can provide three different loads for amplifier testing. In my case, 4 ohms, 8 ohms, and 16 ohms. If both switches are set to the up position, there is 4 ohms. If both switches are set to the down position, there is 16 ohms. If the switches are one up and one down (doesn't matter which), there is 8 ohms. I mounted the resistors (50 watt in my case) to a heat sink and the toggle switches to an aluminum panel, also mounted to the heat sink with standoffs. I found this useful and thought I would share it.

- Richard
Attached Images
File Type: jpg tri_dummy_load.jpg (21.8 KB, 74 views)
  Reply With Quote


Tri Dummy LoadHide 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
Power load, dummy load (pic) luka Power Supplies 43 9th February 2012 02:50 PM
8 ohm dummy load andrewe1 Parts 43 9th May 2011 05:44 AM
dummy load reddish75 Solid State 72 3rd April 2008 01:15 AM
Dummy - load JensRasmussen Solid State 24 23rd February 2007 01:04 PM
Resistors for dummy load? wintermute Solid State 54 3rd February 2004 11:59 AM

New To Site? Need Help?

All times are GMT. The time now is 07:18 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio