Some Bull****ting Idiot called wrote:

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PFC is mandated for domestic goods above 20w here.


** No it isn't.

EN 61000-3-2 set some limits on the levels of harmonic current permitted.

http://www.epsma.org/PFC%20Guide_November%202010.pdf

These limits are sufficiently high that the majority of electronic devices intended for domestic use meet the standard with no special correction circuit or device installed.


PFC correction & the ability to run at 120 & 240 without changing
a switch are of course 2 separate things.


** But are closely related since active PFC allows a designer to fairly easily achieve 85VAC to 265VAC operation and which many items already have.

Wide input range SMPS without active PFC exist, but IME are less common.


...... Phil