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dennismiller55

8 Ohm Dummy Load Karma

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With all the tube amps being built I thought I would offer this unused dummy load I have.  This is really useless without some other test equipment.  At a minimum a signal source (oscillator) and some kind of wideband AC RMS meter.  Of course an oscilloscope would be nice also.  

 

If you are thinking about building a small bench with some test equipment and would like this then let me know.

 

This can easily handle 100W with the heatsink.  

 

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14 minutes ago, Nahash5150 said:

 

I like how he has 'M200t' highlighted - in case he forgets.  😛

 

I wonder if Dennis uses a color-coding scheme for his schematics. 🤔

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Hi Dennis, thanks for your generosity.  I could use that, so please count me in.

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Dennis, building the 275 was so much fun that I do want to build a small repair bench. @kve777 just answered my question in another thread about whether I need to discharge my amp to replace some resistors....yep. Please count me in, and I need it post haste. Thanks!!

 

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Thank you for the kind offering Dennis..... Yes... please count me in as well. That's the one piece of test gear I have never had and could certainly use!

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I think this is going to Raven.  She was first to ask.  

 

For the rest of you this is a great DIY project.

 

Here is a great example from Pete Millett > Audio Dummy Load   By the way, Pete has some great TUBE project on his site.

 

There are plenty of 8 ohm power resistors on eBay.  You just need some kind of heatsink.  You can find those on eBay as well or just find some 1/4 inch steel plate.  

 

A Google image search shows some great ideas >  Audio Dummy Load

 

And then Parts Express has ready made loads > 8 Ohm 100W Non-Inductive Dummy Load Resistor

 

Have fun.  

 

*******************************************************************

 

OK, this is back in play.  Nahash will share his with TheRaven. 

 

So I will put all the names in a hat and draw in a few days.

 

Anymore needing some karma?

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Posted (edited)

I have a couple of 200 watt,  7-8 ohm resistors that I will Karma for others here. Since Dennis and his karma is back in, I will let Dennis draw for mine too and I will ship to whoever wins!

FAFBDE7E-4F41-4114-862F-2130CB9A08A7.jpeg

Edited by Dadvw
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