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In Reply to: RE: Component values to configure a complex load for 8 ohm dummy resistor. posted by rivervalley817 on February 02, 2021 at 21:06:54
Thanks, rivervalley817. That's one of the circuits I considered among others I researched, but it's too complicated/expensive for the particular application. I'm configuring a cable burn-in device (not to be confused with a cable cooker) to provide higher voltage/current over a period of time than typical audio playback within a system, and wanted more than just a dummy resistor to use as the load. Perhaps I've been overthinking the application; not the first time mission creep became involved in a project.
Follow Ups:
a cheap heating pad might give you the circuit you want ... ; )
regards,
I need an audio signal for the purpose I have in mind, not just voltage and current, in and of itself.
you could use an audio signal, no problem
[now I'll make the obligatory 'warm sound joke']
it will imbue the treated cables with a warm sound
[I actually winced typing that too!]
with regards,
Since I'll be burning in a 50 foot length of bulk cable, sometimes up to 100 continuous feet at a time, I may achieve enough inductance by simply coiling the cable up like an air core inductor, and attaching the dummy load at the end.
that's a plan!
jeez, what the heck are you wiring?
regards,
A field recorder into a sound mixer, into a 200 watt at 8 ohms amplifier, out through the cable into an 8 ohm dummy load resistor.4G of audio burn-in tracks played on repeat for a few days should do the job. That way only the solder joints of the finished interconnect cables will need to see initial burn-in time.
Edits: 02/03/21
you're a mother of invention ... so to speak
I'll await your report on the project, sounds cool!
regards,
Only thing left is to affix a dummy load resistor upon a massive aluminum heatsink with whisper fan, with hope that the ATI Amplifier Technologies power amp can hold-up to the strain.
for burn in I'd take it to 16ohms ... it won't hurt the amp
don't get carried away with the volume knob, but still, it shouldn't
regards,
I'll look into using a multimeter to monitor the output level, and make sure there is plenty of overhead to keep things safe and sane.
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