Derek,
It all depends on how and to whom the power supply will be marketed.
Section 15.3(h) and 15.3(i) of the FCC Rules define what is considered a
Class A and a Class B device. The applicable definitions are quoted below:
(h) Class A digital device. A digital device that is marketed for
use in a commercial, industrial or business environment, exclusive of a
device which is marketed for use by the general public or is intended to be
used in the home.
(i) Class B digital device. A digital device that is marketed for
use in a residential environment notwithstanding use in commercial, business
and industrial environments. Examples of such devices include, but are not
limited to, personal computers, calculators, and similar electronic devices
that are marketed for use by the general public.
NOTE: The responsible party may also qualify a device intended to be
marketed in a commercial, business or industrial environment as a Class B
device, and in fact is encouraged to do so, provided the device complies
with the technical specifications for a Class B digital device. In the
event that a particular type of device has been found to repeatedly cause
harmful interference to radio communications, the Commission may classify
such a digital device as a Class B digital device, regardless of its
intended use.
As you can see, the answer to your question depends on the intended use and
market for the power supply.
Hope this helps.
Ghery S. Pettit, NCE
Intel Corporation
-----Original Message-----
From: Derek Walton [mailto:[email protected]]
Sent: Tuesday, November 30, 1999 11:10 AM
Cc: [email protected]
Subject: FCC Class A Digital Device?
Hi,
would I be correct in assuming that for FCC Conducted Emisions, an
"off-line"
Switched Mode Power Supply running at 30 kHz is a Class A digital device?
Thanks,
Derek.
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