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Old 5th December 2004, 07:19 PM   #11
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I have a loud "pop" everytime a fluorescent light in the next room gets turned on or off.Doesn't matter which amp I'm using,I always hear it.
I've tried: A decent homebrew power filter built in a 6-outlet strip, a R/C (100 ohms .01uf) across the switch,varistors,etc..
It's always there and I can't get it to go away!
The only thing I havn't tried is replacing the fixture,which may happen soon.
Beware of fluorescent lights,and dimmers,they are noisy creatures!

Infact,a few weeks ago a friend was over and we were playing with something on the scope,and we could see noise on the trace from all the dimmers around the house! just a "notch" on the 60hz background noise..the "notch" would move up and down theside of the sine wave depending on the brightness setting of the dimmer.
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Old 5th December 2004, 07:32 PM   #12
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Hi.

I hear this "pop"noise when lights, which are switched by an "Current draw switch"[stromstoßschalter, Eltako, i don't know the right word], are turned on or off

karahara
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Old 5th December 2004, 07:42 PM   #13
Bricolo is offline Bricolo  France
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I had this problem on my computer speakers

try to place a ferrite core around the mains cable, and the same with the input cable (if the cable is thin enough, make some turns around the ferrite)

it worked for me
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Old 6th December 2004, 04:18 AM   #14
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Fix a .068µF/400VAC capacitor across the primary of the tranformer. Try nearby value for best results.

Quote:
I have a loud "pop" everytime a fluorescent light in the next room gets turned on or off
Fix a capacitor of 2/2.5µF/250VAC at the fluorescent light fitting across the mains.

Gajanan Phadte
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