"Palindr?me" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> RedFox wrote:
>> <(E-Mail Removed)> wrote in message
>> news:(E-Mail Removed) oups.com...
>>
>>>What makes and models of film projectors? Many of them can be
>>>changed
>>>to run on the other frequency. Some tape recorders can also, e.g. by
>>>moving a belt to a different step on a pulley.
>>
>>
>>
>> Thank you John G, Palindr?me and Furles, for the very helpful
>> comments.
>>
>> My film projector is German made so it should be ok, though I'm not
>> sure how
>> it copes
>> with the frequency change. It's out of my reach at present so I can't
>> look
>> at it. As Furles suggested, I have a DUAL turntable that has a
>> voltage
>> switch 220-110 and a replacement pulley. The tape recorders I have
>> not
>> looked closely at but will soon. With a VCR there is a double
>> problem - the
>> TV format, in addition to the frequency difference. Another of the
>> problem
>> pieces is a Sony receiver that has a plate mark of 110 v, 60 Hz and
>> no
>> change possibility. I asked Sony about 220v 50 Hz and they said to
>> use an
>> AVR, or something like that. I asked what they meant and didn't
>> respond. I
>> did a search and came up with zillions of hits of all kinds.
>> Somehow I had expected fairly inexpensive 220 - 50 Hz => 11- 60 Hz
>> for small
>> items around 20 watts but haven't identified any.
>
> Well, domestic VCRs are effectively obsolete now anyway and new ones
> are very cheap. But I would transfer the tapes to DVDs and move on.
>
> For AVR, read autotransformer. OK, you can get autotransformers with
> switched taps that act as an "Automatic Voltage Regulator" - to allow
> for very variable utilitiy supplies. You probably won't need anything
> that complicated or expensive and a simple 220 > 110 volt
> autotransformer will do. Maplin (UK) have one rated at 100W:
>
> http://www.maplin.co.uk/Module.aspx?...31899&doy=15m8
>
> Note that these do NOT change the frequency - but only the voltage. So
> typically it will change 220-50Hz => 110 - 50Hz
>
> If the Sony receiver is also a mains-driven alarm clock - you will
> have problems. It quite possibly won't keep accurate time. There is
> often a link on the clock board inside that can be made or broken to
> allow for mains frequency (much like the mechanical equivalent of a
> sleeve on a shaft or a pulley change, as I suggested for mechanical
> kit) so it may be possible to fix this - but the link is probably
> soldered and you need someone used to working with asoldering iron on
> electronics, if you aren't.
>
> --
> HTH
> Sue
>
Caution>>>>>>>
AUTOtransformers are not permitted in most 230volt countries because it
is possible to get your 110volt device connected to the 230volt hot and
a tap half way down instead of the neutral and a tap halfway up.
I would be very surprised if they are allowed in the UK but then I do
not know where you or the OP are.
Really the simplest answer to all this is to uy new devices at the new
location. (What a great excuse to update.)
--
John G
Wot's Your Real Problem?
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