Do CFL light bulbs cause interference when recording?

2012/10/02 18:19:12

I got to use my Arrisun 5 Hydrargyrum medium-arc iodide light on a furniture store shoot this morning.

It's bright enough to give you a sun burn and only uses 575 watts.

best regards,
mike

2012/10/02 19:00:55

Jonbouy

Well done!

2012/10/02 19:38:48

craigb

mike_mccue

The CFLs have little tiny switching power supplies that take the place of the traditional magnetic ballasts.

The magnetic ballasts are safer, less prone to bursting into flame, and less prone to melting than the switching power supplies, but they spray Electro Magnetic Interference into your audio electronics.

That's why older florescent fixtures have the reputation of adding noise to audio circuits.

The CFLs don't exhibit that problem because the switching power supplies, which produce EMI and RFI as well, are routinely and effectively filtered for the EMI, and sheilded for the RFI protection by the manufacturers.

best regards,
mike

Thanks Mike!

(Can't afford LED's yet... But they are on my radar for the future - unless the world ends in December, then I probably won't care.)

2012/10/03 00:55:28

quantumeffect

I've used tungsten in my son's pinewood derby cars.

2012/10/03 01:36:47

Old55

Since when do lava lamps use CFLs?

2012/10/03 02:04:06

craigb

Old55

Since when do lava lamps use CFLs?

Good point! Deserving of a YHBT.

2012/10/03 06:51:36

Beagle

craig & jan - see post 19

2012/10/03 07:17:33

Jonbouy

Beagle

craig & jan - see post 19

Typical!

Nobody pays attention anymore like they did in the old days.

I blame it on the cumulative effects of all this new-fangled lighting.

It's all gone slightly dimmer.

2012/10/03 07:47:49

jamesg1213

I work by the flickering light of burning martyrs.

2012/10/03 07:55:06

Jonbouy

jamesg1213

I work by the flickering light of burning martyrs.

Do CFL light bulbs cause interference when recording?

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