These groups often quotes
WHO statements — that
they’ve evidently not read
—about RF exposure and its
relationship to human health.
WHO states that current
research literature reports no
correlation between long-term
exposure to low-level RF fields
and human health problems.
Meanwhile, studies of smart
meters that use RF links indi-
cate that, when active, they
emit no more RF energy than
a cell phone — often less. Due
to their low duty cycles, their transmitters are typically active for a total of no more than three
minutes per day. Additionally, rarely does one see a homeowner or business operator with their
head pressed against their electric-energy meter. Please send pictures if you do.
The behavior of technical markets, however, is not that different from nontechnical ones,
where perception all too often is reality. The industry has done a poor job in answering either
concern effectively, as frivolous as they may seem to insiders. Most of the utilities’ statements
I’ve found on these topics have appeared either on company or industry-association websites
or in fliers like those that accompany monthly energy bills. Admittedly, mine has not been an
exhaustive search on the subject, but what I’ve found thus far reminds me that if McDonalds
only placed their advertising messages on hamburger wrappers, they’d still be looking forward to
serving their first million.
DC/DC Converters
for Medical Safety
Requirements
www.tracopower.com
• I/O isolation 5000 VACrms
• 2 x MOPP Medical safety according to AAMI/ANSI ES
60601-1:2005(R) and IEC/EN 60601-1 3rd edition
• Low leakage current < 2 μA
• Very high efficiency up to 89%
• Extended operating temperature range -40°C to 85°C
THM Series
3 to 10 Watt
Table 1: U.S. grid power: average, peak, and PAR data, 1993 through
2012 (Data source: Energy Information Administration, US Department of Energy)