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Topic: It's electric!!

User: pridelion, Location: Florida

Asked on: Saturday, September 10, 2005 at 8:29 pm EDT
Answered on: Thursday, May 9, 2024 at 12:47 pm EDT

Question: I have outlets and low voltage(12v) cabinet lighting on the same circuit. A radio is plugged in and playing clear...until the L.V. lights are switched on, then the radio beginns to buzzzzz. Solution? Poss. problem?(small 100w transformer hidden in upper cabinet)

Possible Problems



Ground loop

The ground connection between the radio, lighting transformer, and power outlet may be compromised, creating a loop where electrical current can flow through the ground wire and cause interference.


Electrical noise

The transformer used for the low voltage lighting may generate electrical noise, which can interfere with the radio's signal.

Loose connections

Poor electrical connections within the circuit can increase resistance and create interference.

Solutions



Check the ground connections

Ensure the ground wire is securely connected to the radio, lighting transformer, and power outlet. Consider using a multimeter to test for proper grounding.

Use a noise filter

Install a noise filter on the transformer to reduce electrical noise. You can find these filters at most hardware stores.


Tighten loose connections

Inspect all electrical connections within the circuit and ensure they are snug and secure.

Additional Tips:
If possible, unplug the radio and determine if the buzzing occurs without it plugged in. This will help isolate the problem to either the radio or the lighting circuit. Try using a different power outlet for the radio, as the current outlet may have a ground fault. Replace the low voltage transformer if it is old or suspected of being faulty. As a temporary solution, you can try reducing the brightness of the lighting to see if that minimizes the interference. Flag for review

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