How about this small # toroidal transformer?

bigdogwang · 21st November 2007, 02:07 PM

I see a datesheet of transformer as attach, so small and so big power!
Would you tell me is it a good quality transformer?

487W
Diameter=123
High=57

AndrewT · 21st November 2007, 02:31 PM

3.2kg and 487VA seems about right.
primary wire gauge is very small @ 0.33sqmm carrying 6.4A/sqmm.
secondary wire gauge is just as bad @ 1.3sqmm carrying 6.1A/sqmm.

This transformer is likely to have a fairly high regulation for it's rating and will run a bit hotter than one with more copper.

The low voltage secondaries are just about what is expected of current types.

bigdogwang · 21st November 2007, 03:19 PM

Can I use it for HIFI Machine. Have some trouble?

StevenOH · 21st November 2007, 05:38 PM

The power rating is so high, because it is related to 73 deg. C rise, which means your transformer will be at ~100 degC.
Reduce current consumption in the secondary, and it will be cooler.

bigdogwang · 22nd November 2007, 01:10 AM

The vendor tell me the Plitron transformer is one of the best over the world. As you comment, it seem to ...

If you give it a grade from 1 to 10.
10 is very good, 1 is very bad.
Would you please give your comments?

21st November 2007, 02:31 PM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	3.2kg and 487VA seems about right. primary wire gauge is very small @ 0.33sqmm carrying 6.4A/sqmm. secondary wire gauge is just as bad @ 1.3sqmm carrying 6.1A/sqmm. This transformer is likely to have a fairly high regulation for it's rating and will run a bit hotter than one with more copper. The low voltage secondaries are just about what is expected of current types. __________________ regards Andrew T.

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21st November 2007, 03:19 PM	#3
bigdogwang diyAudio Member Join Date: Nov 2004 Location: sh	Can I use it for HIFI Machine. Have some trouble?

21st November 2007, 05:38 PM	#4
StevenOH diyAudio Member Join Date: Jun 2004 Location: USA	The power rating is so high, because it is related to 73 deg. C rise, which means your transformer will be at ~100 degC. Reduce current consumption in the secondary, and it will be cooler.

22nd November 2007, 01:10 AM	#5
bigdogwang diyAudio Member Join Date: Nov 2004 Location: sh	The vendor tell me the Plitron transformer is one of the best over the world. As you comment, it seem to ... If you give it a grade from 1 to 10. 10 is very good, 1 is very bad. Would you please give your comments?

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