>Hi Rich,
>
>No it's 50Hz.
100V-200V/50Hz motors and transformers run ok as is on 120V-240V/60Hz and
vice-versa. However, 234V/50Hz units would require a special design in
order to be interchangeable with 240V/60Hz.
- I like the Swedish standard of 380v/240v 3-phase. With 380v,
3-phase, large amplifiers would not require heavy Cu mains and mother
filter caps. Automobiles are changing to 42VDC as I write this. Some
European diesel cars are already doing so. BMW will switch to 42v in
'06. When VW switched from 6v to 12v in the 1960s, they almost went to
28V because it was better. On the space station, 170VDC is used.
>Being an ex British colony they have kept much from that
>time. Actually they are one of the few places I'm aware of that use the
>UK square three pin AC plugs and sockets, in addition to UK that is, the
>only other one I know of being Hong Kong.
>
>Actually they are quite a few steps ahead of the rest of the planet in
>some things. Every home has a minimum 256K always on internet connection
>for example.
>
>73's fm Bangkok, where we still have to make do with dial up
>Martin de HS0/G4UQF
>
>
>-----Original Message-----
>From: amps-admin@contesting.com [mailto:amps-admin@contesting.com] On
>Behalf Of 2
>Sent: 29 August 2002 18:56
>To: Martin Sole; 'AMPS '
>Subject: Re: Hetaer volts, was RE: [Amps] Which 3-500Z
>
>
>Maybe Singapore is now in step with most of the planet.
>
>>Rich,
>>'Singapore where they have 100v/200v, 50Hz'
>>Really?, I was there last week and it measured 236V (ish).
>
>Is it 60Hz?
>
>>Seem to
>>remember it's always been about that but I can only go back about 14
>>years. I recall JA as being a nominal 100V though.
>>
>>Never knew they made Henry's in 9V. I go down there every couple of
>>months or so. But I bet there's nothing left to say they were ever
>>there.
>>
>
>>73's
>>Martin de HS0/G4UQF
>>
>>
>>-----Original Message-----
>>From: amps-admin@contesting.com [mailto:amps-admin@contesting.com] On
>>Behalf Of 2
>>Sent: 29 August 2002 05:07
>>To: Steve Katz; Randall DuCharme; AMPS
>>Subject: RE: [Amps] Which 3-500Z
>>
>>
>>The voltage on 1kd-5 and 2kd-5 filaments would be c. 5v in Singapore
>>where they have 100v/200v, 50Hz.. As understand it, both amps were mfg
>
>>in Singapore.
>>
>>>When I had a 2KD5 many years ago, even its filament voltage was too
>>>high with the normal 240V operating primary tap. What were they
>>>thinking? (It was probably just about right for operating in VK with
>>>265V line voltage...) -WB2WIK/6
>>
>>
>>- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
>>www.vcnet.com/measures.
>>end
>>
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>>
>>
>>
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>>
>
>
>- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
>www.vcnet.com/measures.
>end
>
>_______________________________________________
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>Amps@contesting.com
>http://lists.contesting.com/mailman/listinfo/amps
>
>
>
>_______________________________________________
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>Amps@contesting.com
>http://lists.contesting.com/mailman/listinfo/amps
>
- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
end
|