[RFI] RFI Emissions Standards for LED Drivers / Switching PS.

[Bob Turner]

I purchased the RS-15-12 switcher.  https://www.trcelectronics.com/ecomm/pdf/rs15.pdf.   The metal case looked promising for keeping RF inside the unit.  So far its quiet on HF.  I have not tuned from 6m to 23cm.    The leads from the source/ps to the load and LED light are 6 inches long at the moment.  No noised noticed on HF with a cursory tune up the bands.  Next step is longer leads to the load.

This PS is to replace an internal noisy/small switcher in an outdoor the light housing that currently takes 120v, with an external one with 12v leads running to the housing.  The internal switcher may be removed or simply bypassed.

7 3  Bob
N2SCJ

From: Bob Turner
Sent: Monday, December 14, 2020 12:41 PM
To: Rfi List <rfi at contesting.com>
Subject: RFI Emissions Standards for LED Drivers / Switching PS.

Today I noticed an EMI standard of EN55015 on a power supply.  Does this standard mean much?  Are there others to look for when selecting a switching power supply?  I am using a doorbell transformer for some very low level LED lighting, but it gets warm and if I had a higher current need it would be too small.

This is one example of EMC Emission standards being claimed.  https://www.trcelectronics.com/ecomm/pdf/rs15.pdf.  They list: EN55002 (CISPR32) Class B and a few other standards.   Class B caught my eye, I think that is what home computers need to be while servers, generally destined for data centers can be class A.  Are any standards worth paying attention to when purchasing an LED Driver power supply?

7 3  Bob
N2SCJ