A Swede, perhaps.

John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK

On 2018-03-02 19:50, Jim Hulbert wrote:
Did you get replies from other than humans?

Jim Hulbert

-----Original Message-----
From: Brian O'Connell [mailto:oconne...@tamuracorp.com]
Sent: Friday, March 02, 2018 2:31 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] light flicker

Good People,

Thanks to the humans that replied on and off-line. Much appreciated.

Have also noted that there has been some interesting discussions on the subject 
per the proposed Peoples Republic of California Energy Commission regulations 
for LED luminaires; for example, note this comment to the CEC:

http://docketpublic.energy.ca.gov/PublicDocuments/17-BSTD-02/TN222823_20180302T105129_Kelly_Seeger_Comments_Philips_Lighting_additional_comments_on_N.pdf

Brian


-----Original Message-----
From: Brian O'Connell
Sent: Wednesday, February 21, 2018 2:14 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: light flicker

Does any 60601 collateral standard, address limits for light-source flicker; or 
have any other requirements for the light-flicker frequencies emitted by a 
luminaire? Have noted IEC60601-2-41 but do not have it; does it provide 
light-flicker frequency limits?

Am already aware of the TLA stuff in NEMA77 and IEEE1789, and the IEC61000-4-15 
'flickermeter' stuff. These standards are contradictory, and the IEEE standard 
fails to provide any reference to biophysical data that would provide a 
rationale. And 60601-1 clause 10 does not say much other than the generic 
response that references the RMF.

Thanks,
Brian

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