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a puzzle to does a battery operated flashlight interfere with radio signal??

i know certain appliances plugged into same electrical circuit can cause interference. but a flashlight??
this is happening in basement where i am installing 3 way switches and replacing receptacles
FrozenWasteland · 61-69, M
Depends on the flashlight. Some flashlights have a switching power supply between the batteries and whatever they use to make light (a bunch of LEDs or a fluorescent tube) to increase the voltage and switching supplies can be electrically noisy. Radio signals are small so it doesn't take much radiated energy to interfere.

If it's an old-fashioned flashlight with only batteries and an incandescent bulb, I have no idea.
1490wayb · 56-60, M
@FrozenWasteland i think you are correct. it is a newer model, very bright flashlight.
Maybe when a torch is switched on it releases a weak electromagnetic field. I'm just guessing.
Northwest · M
You did provide enough details, but my guess is that you scenario involves a TV or radio in the basement, and an LED flashlight.

If this is the case, the problem is that the LED flashlight is using non-EMC (EletroMagnetic Compliant) LED bulb.

The solution is to switch to a flashlight with LEDs that are EMC certified. This could also affect the operation of a computer as well.
Oster1 · M
I do not think it can.
I have no idea, something to do with the Ionosphere?
FreeSpirit1 · 51-55, F

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