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can this be done ?
can this be done ?
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Old 15th March 2005, 03:08 AM   #1
Diy_Ambitious is offline Diy_Ambitious  New Zealand
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Default can this be done ?

The transformer has 13-0-13 secondaries. I only want one 18v dc single supply. Can I split the 0v of the transformer into 2 wires, use 2 rectifiers and combine the -'s and +'s to get my 18v ?




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Old 15th March 2005, 04:45 AM   #2
Stocker is offline Stocker  United States
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I asked the same question quite some time ago and was directed to a forgotten page on the Elliot Sound Products website explaining various rectifier setups.

But without any external links, just remember that once the secondaries are separated, it's just AC x2, not AC center-tapped. After the rectifiers, the DC tastes the same.
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Old 15th March 2005, 07:07 AM   #3
audiousername is offline audiousername  Australia
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A FWCT (Full-Wave-Centre-Tapped) rectifier like routinely used in valve amps with thermionic rectifiers might do the trick. You should get somewhere around 18V.

Click the image to open in full size.

The image is from the Linear Power Supply Design article on Rod Elliott's site (possibly what Stocker was directed to previously).
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