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Old 21st November 2012, 08:51 AM   #1
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Default Custom mains EI transformer supplier in US

Please suggest a manufacturer who is willing to make one or two pieces of custom made mains EI transformer with 110 and 120V primar and couple of secondaries. Power is 150VA and no other special demands.
Thanks!
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Old 22nd November 2012, 12:02 AM   #2
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Location: Broomfield, CO
Try;

EDCOR
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Old 22nd November 2012, 02:03 AM   #3
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Try Jack at Electra-Print.com High-Fidelity Audio Tranformers and Tube Amplifiers. I'm not sure if he does power trannies, but does everything else. He made some chokes for me, well made, well priced, and quick.
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Old 22nd November 2012, 02:03 PM   #4
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Post the specs there could be something allready available! E
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Old 22nd November 2012, 02:18 PM   #5
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Primary 110 and 120VAC

Secondaries:
365V - 0 - 365V (150mA)
16V - 0 (3A)
6.3V - 0 (3A)
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Old 22nd November 2012, 02:37 PM   #6
jcx is online now jcx  United States
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a problem with existing designs is the core B operating point - for mass market profit the competition is in how little Iron and Copper they can sell you to make VA specs

I have seen Im go up large factors in 5 % high line V test, even in a "universal" design that should be expected to work at 50 Hz as well as 60

an opportunity with custom design is to dial back core B operating point for less magnostriction, lamination vibration noise, lower primary circulating current
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