Electro Stimulation Ward > Power Conditioning

EMI from CFL audio file...

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P.I.:
I'm breaking in a pair of Eminence Redcoat musical instrument speakers for a bandmate.  The method I have used for years uses a Variac with the speakers facing each other wired out of electrical phase.  Just for sport I did a quick audio recording with my iPhone of the resultant noise created of the AC audio with and without a SYLVANIA 100-Watt EQ A19 Natural Daylight Light Fixture CFL Light Bulb in circuit.

What you will hear is the noise with the CFL in circuit for about 14 seconds, then without for about 12 seconds, then with and lastly without.

Very telling.  If you have CFLs in your home sound quality will be much better with all of the CFL bulbs and tubes turned off.

Let's the conversation begin...

https://soundcloud.com/user-592693109/sets/cfl-noise-imprint-on-ac

HAL:
Dave,
Did you try it with the new LED style lighting at some point?  That might be interesting as well.

Rich

rollo:
  Wow tha'ts noisy. Cool demo Dave. You Bees right none in my home. Bought a ton before change. Rat dogs.  :duh


charles

P.I.:

--- Quote from: HAL on August 06, 2019, 01:27:04 PM ---Dave,
Did you try it with the new LED style lighting at some point?  That might be interesting as well.

Rich

--- End quote ---
Not yet, Rich.  Those are on my list.  I would imagine the small SMPS in each of them canít be good.  Iíll put the files into a software O-scope, too.

P.I.:

--- Quote from: rollo on August 06, 2019, 05:04:32 PM ---  Wow tha'ts noisy. Cool demo Dave. You Bees right none in my home. Bought a ton before change. Rat dogs.  :duh


charles

--- End quote ---
Good on ya, mate!

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