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AllegroKnowledgeBase



What the Manufacturers, Distributors,
Importers
and Retailers of electronics
don't want you to know:

Stepping DOWN your Mains Voltage

(which your local power co is doing)
with a step-down mains autoformer
will improve the sound quality.

Audiophiles in Europe are a lucky bunch!
You can operate USA 120-Volt electronics
on 220~240 circuits with the addition
of a step-down AC Autoformer or
Variac (Variable AC Autoformer)
rated for your mains Input voltage
and set to Output 115~120 Volts.
Make sure the Amperage-rating of
the Autoformer or Variac is higher
than the maximum current draw
of equipment you are powering;
the higher the rating, the better.

Some AC Autoformers output voltage
higher than indicated, so TEST the output
voltage with a True-RMS AC voltmeter.

AllegroRule#1:
Assume nothing is correct until you test it.



* Mains Frequency of 50Hz & 60Hz are typically interchangeable;
vintage 1950's~1960's turntables and tape decks with hysteresis-
synchronous
motors that lock to line frequency are exceptions.


* See ReForming Power Supply Capacitors.


   CLICK for The State Of Power 



Mains-Voltage Around The World

COUNTRY

VOLTAGE (V)

FREQUENCY (Hz)

Australia

240 50
Argentina 220 50
Bangladesh 220 50
Bhutan 220 50
Bolivia (La Paz) 110 50
Bolivia (elsewhere) 220 50
Brazil (Salvador/Manaus) 127 60
Brazil (Brasilia/Recife) 220 60
Brazil (Rio/Sao Paulo) 110 60
Chile 220 50
Canada 120 60
Colombia 110 60
Denmark 220 * 50
Ecuador 110 60
Falklands (Malvinas) 240 50
France 230 50
French Guiana 220 50
Germany 220 * 50
Great Britain 230 50
Guyana 110 60
Hungary 220 50
India 220 50
Iceland 220 50
Ireland 220 * 50
Japan 100 50
Kyrgyzistan 220 50
Luxembourg 110 * 50
Madagascar 220 50
Maldives 220 50
Mexico 110 60
Nepal 220 50
Netherlands 230 50
New Zealand 230 50
Norway 230 50
Pakistan 220 50
Paraguay 220 50
Peru 220 60
Philippines 220 60
Poland 230 * 50

Romania

220

50
Spain 127/220 * 50

Sri Lanka

230/240 50
Suriname 110 60
Sweden 230 50
Switzerland 220/240 50/60

Taiwan

110 60
Uruguay 220 50
United Kingdom 230 50

U.S.A.

120 60

former U.S.S.R.

127/220

50

Venezuela

110

60


quid pro quo

AllegroSound
−  Established 1973  −
"love what you listen with"
Los Angeles, California USA
Rick@AllegroSound.com


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AllegroSound et al assumes no responsibility for use or misuse of products, services, info, etc.
design & original content ©AllegroSound, los angeles, california, usa. all rights reserved.


AllegroSound
−  Established 1973  −
"love what you listen with"
Los Angeles, California USA
Rick@AllegroSound.com
telephone 323.960.5014

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design and original content ©AllegroSound, los angeles, usa. all rights reserved.