It may not be important whether you call it an applied part or not. You are not
making a direct electrical connection to the patient. In any case you should
meet the leakage requirement. This should be easy with properly insulated
earphones.
IEC 60950 also addresses this issue and throws in more
I also agree that the headphones are a patient connection.
Hi,
Its been a while since I looked at UL 544, but a few comments.
1. Headphones are an applied part (UL2601-1) or patient connection
(UL544). They come into direct contact with the patient. You can argue
that they are an
Good Day - First, why are you using UL544? Why not use UL2601, based on
IEC601-1 with US deviations? Beware, UL544 UL187 may be used until Jan 1
2003, after that use of UL2601 will be mandatory. Also, As of Jan 1 2005,
all Listed, Classified and Recognized medical and dental products, where
Hi,
Its been a while since I looked at UL 544, but a few comments.
1. Headphones are an applied part (UL2601-1) or patient connection
(UL544). They come into direct contact with the patient. You can argue
that they are an ordinary patient connection (Clause 2.18 of UL544). But,
it is
Yes, I also belive that your equipment has no patient leads and that the
enclosure leakage was performed as part of the power supply. If in doubt
regarding the enclosure leakage, best is to ask the power supply
manufacturer for a complete report.
Why are you using UL544 power supply? This
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