flourescent light are you keeping me up at night?

Started by janus, February 17, 2006, 10:57:02 AM

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janus

Hello,
I've built 3 circuits in the past week(1 easyface, 2 easydrives) and have been pulling my hair out on this hum it's been keeping me up until the wee hours...everything is grounded as it is written in the schematic. I hear the sound of the circuit and it sounds great but It competes with a hum that sounds like a guitar cord with your thumb on it.  Since the wife and kids are sleeping when I work I am running the effect out into a mackie mixer and plugging headphones into the mixer. Three hours of hum going straight in your ears can really turn your brain to mash potatoes. I've tried everything to eliminate it and have check the grounds hundreds of times on all of them. I used the search function today and read about the relationship of flourescent light and hum. I have about a 6ft long 2 bulb one 4 feet above my head, I never thought to turn it off. It's the only light I have used in my workshop. I'm also using a cheap sg copy with laying on the workbench so the pickups are pointing straight up at the flourescent light. I'm stuck here at work and am wondering if anyone has ever solved hum by turning the light off? These are higher gain circuits so I'm hoping that would make it more of a solution. I will go home and try tonight. But I am seriously sleep deprived and at my wits end about the hum and if I heard that someone resolved a hum issue because of the flourescent light I would be a chipper man here at the job. Oddly I have built a bazz fuss with the light above me and had no hum issues whatsoever...
any experiences with this or suggestions appreciated.
brian

Peter Snowberg

QuoteI'm stuck here at work and am wondering if anyone has ever solved hum by turning the light off?

Yes.... more than once. ;)
Eschew paradigm obfuscation

vanhansen

Quote from: Peter Snowberg on February 17, 2006, 11:00:54 AM
QuoteI'm stuck here at work and am wondering if anyone has ever solved hum by turning the light off?

Yes.... more than once. ;)

Same here.  I just got one of those desktop flourescent lamps and this started happening with certain circuits.  Also solved it by turning off both computer monitors in the room.  ;)
Erik

janus