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Dummy Load resistors
Dummy Load resistors
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Old 3rd June 2003, 12:34 PM   #1
JOE DIRTŪ is offline JOE DIRTŪ  Canada
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Default Dummy Load resistors

Now these are what I call Dummy Load Resistors.LOL....they are Dale 8 ohm 225 watt
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Old 3rd June 2003, 01:41 PM   #2
jmateus is offline jmateus  United States
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Default Load resistors

Are they inductive?
I have a pair of similar ones and I can't use them because of
that... They are very unreliable as far as readings on the scope,
they present an inductive load to an amplifier and the waveforms
are unpredictable and not truthful.
JLH 2005, Cyrus and so on...
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Old 3rd June 2003, 02:12 PM   #3
Fusor is online now Fusor  United States
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Dummy Load resistors
I have their little brothers.
These Dales are 100 watt 16 ohm.
Got them for a future Son of Zen.
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Old 3rd June 2003, 02:50 PM   #4
dhaen is offline dhaen  Europe
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Default 20KHz square-wave tests?

Are they inductive?
How much inductance are we talking about here?
A piece of wire has inductance.
I can't imagine any problem within the audio band: Unless you put a core, such as a fixing stud through the middle.

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Old 3rd June 2003, 03:28 PM   #5
Da5id4Vz is offline Da5id4Vz  United States
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Default Non Inductive Speakers?

But most speakers present an inductive load too.

So is the issue with non-inductive dummy loads is to be able to take accurate output readings?

If this is the case, are inductive dummy loads OK if you are just trying to run an amp at power without endangering your speakers and deafening the neighbors?
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Old 3rd June 2003, 09:48 PM   #6
thylantyr is offline thylantyr  United States
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Get some nichrome wire - heating element cores
for home dryers.... stretch the windings for non inductive.
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Old 4th June 2003, 02:15 PM   #7
L Daniel Rosa is offline L Daniel Rosa
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"But most speakers present an inductive load too. "

That's true, but it's easier to add inductance to a non-inductive dummy load than to counter it in a reactive one.
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