|23rd July 2010, 10:57 AM||#32|
Join Date: May 2003
Location: Palatiw, Pasig City
time to give this thread a second life....
most likely, the transformer primary had fewer turns than what was required, magnetizing current was probably high....
add to that a high primary voltage and you get a heated transformer.....
the best advertisement for a good audio design is the number of diy'ers wanting to build it after all the years....never the say so of so called gurus....
|23rd July 2010, 11:42 AM||#33|
Join Date: Jul 2004
Location: Scottish Borders
Yes a mains transformer designed for 115/230Vac 60Hz will perform adequately. But has it been designed for universal use?
Will it work within specification if the supply voltage is 120/240Vac?
Will it .... is 127/254Vac (max tolerance of most mains)?
Will it work with 50Hz rather than 60Hz?
Will it still be within specification?
To be classed as a universal transformer it must remain in specification with 127/254Vac 50Hz as the worst case supply voltage.
I would expect it to be labeled:
110/120 or 220/240 Vac 50/60Hz
And for the manufacturer to publish the specification details that apply.
regards Andrew T.
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