On 26/02/2014 23:10, Chris Holford wrote:
In article o.uk, Dave
Liquorice writes
snip

Check the size of the smoothing capacitors, IIRC they don't need to
be quite as big at 60 Hz as 50 Hz. Not critical unless this thing is
going to be driven hard, which may cause the supply to have rather
more ripple than intended.

Electrolytic caps are often +50% -20% tolerance so the difference
between 50Hz and 60Hz (17%) is probably not important in this case.

True enough but the tendency of US electronic designers to use cheap and
nasty transformers that are only marginally safe from saturating at 60Hz
is a potentially serious problem for overheating at UK 50Hz.

--
Regards,
Martin Brown