EMI Suppression Filters (EMC and Noise Suppression)Noise suppression solutions

LED lighting is now being introduced into offices and homes at an ever faster pace, and its introduction is seen as playing an important role as an energy conservation measure.
However, the noise generated from the LED bulbs used sometimes adversely affects AV equipment and other products in the vicinity of the bulbs. This is why proven noise suppression measures must be taken.

Problems of noise in LED lighting

Conversion from AC voltage to DC voltage at high efficiency × Switching noise generated
(Higher level of radiation noise compared with incandescent bulbs)
Noise standard applicable to lighting equipment × Noise terminal voltage and radiation noise addressed
Ensuring compliance of LED bulbs with noise standards
Cutting-edge Measures to Suppress Noise

Murata’s solutions (example)

When a noise filter made by Murata is used in the DC line immediately after the bridge diode, a maximum noise suppression effect of 25 dB can be expected at 30 MHz to 40 MHz.

Ensuring compliance of LED bulbs with noise standards