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Torroid Transformer Hum |
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peterb
Senior Member Joined: 02 Feb 2017 Location: Cornwall Status: Offline Points: 332 |
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Thanks all.
I will carry on searching. (I use buy simple 12V trafos from from Trans-Tronic !!) Peter
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Peter
--------------------------------------- Dual 505-1, Cyrus CD T, DIY 80W MosFet amp and PreAmp, 2xKEF 103.2 |
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peterb
Senior Member Joined: 02 Feb 2017 Location: Cornwall Status: Offline Points: 332 |
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Just to wrap this thread up, the hum has now been eliminated.
The transformer from RS went back and they refunded the cost. I then ordered an Audio quality 300VA transformer from a custom torroid shop in the SE (if you want their name please PM me). I spec'd it with the man who did the winding, a lower flux level, a low mechanical noise high grade core material (30M1H), an Electrostatic screen and lastly a Goss band. All the bells and whistles! The result, perfect silence.....at last. Peter
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Peter
--------------------------------------- Dual 505-1, Cyrus CD T, DIY 80W MosFet amp and PreAmp, 2xKEF 103.2 |
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