Well, Isaac led me down a half hour Black Hole at Richtek, following his po=
st in the thread on "RE: [EE] Charger and power circuit for mobile equipmen=
t".

In the process I came across this application note, worth looking at for an=
yone doing mains supplied LED lighting ...

http://www.richtek.com/assets/AppNote/AN022_EN/AN022.pdf

All about minimising light flicker in LED lighting applications.



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