On Wed, 23 May 2018 16:45:32 +0100
"NY" wrote:

"Martin Brown" wrote in message
news
It primarily effects motors.
Many will run faster on 60Hz than 50Hz so sometimes causing
overload.

A motor designed for 50Hz will run faster but with less torque on
60Hz. It seldom has any problematic effect except on turntables and
clocks.

A motor designed for 60Hz and cut to the bone on price (like some
US kit often is) will die horribly on 50Hz mains since the magnetic
cores wil saturate at around 18ms and become a restive load for 10%
of the cycle.

US mains razors are particularly cheap and nasty designed only for
60Hz.

That's a good point. Equipment sold in Europe is more multi-standard
than US equipment. My sister bought a multi-standard VCR (capable of
recording as well as playing in both NTSC and PAL) before she left to
live in the US for a while, because she'd found that multi-standard
equipment is a lot harder to obtain over there. She wanted to be able
to watch tapes of her favourite programmes that we sent her from the
UK as well as to record US programmes.


There is a place near Chicago that specialises in multi-standard,
multi-country AV equipment. If she needs it, I can dig the name out.

--
Davey.