×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Low Voltage Buzz

Low Voltage Buzz

Low Voltage Buzz

(OP)
This concerns Residential 110 vac.
When the low voltage lights are on in the house, any am radio that is plugged in and turned on buzzes like crazy.
They are seperate circuits.
Main power panel is 50' away from the house sub. Each box
has it's own ground(s). This happens whether the ground is
wet or dry.
Thank you,
S

RE: Low Voltage Buzz

This is most likely radiated RFI from the power conversion components in the low voltage lighting.  If you have a small portable radio, walk around and see if you hear the noise and if you can localize it.  

If it is only on the line-powered radios, the noise may be coming in on the power lines.  A ferrite bead or toroid on the power cable right at the radio might help in this case.

But if you here the noise on the portable, there probably isn't much you can do about it without doing some things that could probably not meet NEC and/or void the UL certification of the low voltage lighting system.  

You could try tightening all the wire connections in the low voltage system, but this is a long shot. I don't think grounding setup will make much difference.  

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources