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Tony's latest traffo DIY build
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Old 25th October 2020, 11:41 AM   #1031
Kay Pirinha is online now Kay Pirinha  Germany
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If there's really a rectifier, I'd short it's diodes by applying wire bridges appropriately.
Best regards!
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Old 25th October 2020, 12:21 PM   #1032
daniboun is offline daniboun  France
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Quote:
If there's really a rectifier, I'd short it's diodes by applying wire bridges appropriately.
Best regards!
Thanks but my question is more general : I don't want to modifiy the module, so what is the risk to apply a 30-0-30 VDC to a 20-0-20 AVC on that module with an integrated rectifier ?
Just want to know if it is going to work ? )

Last edited by daniboun; 25th October 2020 at 12:23 PM.
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Old 25th October 2020, 12:54 PM   #1033
TonyTecson is offline TonyTecson  Philippines
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the A3 required +-25 split rails....

two 25volt smps stacked in series, that is what i will use...
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Old 25th October 2020, 12:59 PM   #1034
daniboun is offline daniboun  France
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Quote:
the A3 required +-25 split rails....
As per spec below, recommended Toroidal PSU is 20-0-20 VAC x 2
So thought that 28 VDC SMPS 500W (dual rail) should be OK.

20V AC x 1.4 = 28 V DC


ZEROZONE assembleld Ver 2.0 passe A3 classe A Mono amplificateur carte 30W Amp bricolage (pas de dissipateur thermique) | AliExpress

Last edited by daniboun; 25th October 2020 at 01:09 PM.
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Old 26th October 2020, 01:48 AM   #1035
TonyTecson is offline TonyTecson  Philippines
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your amp shows too many filter caps, so then i doubt that smps is what you need..

looks like toroid traffo is all you need.....

Click the image to open in full size.

Last edited by TonyTecson; 26th October 2020 at 02:10 AM.
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Old 26th October 2020, 08:42 AM   #1036
daniboun is offline daniboun  France
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your amp shows too many filter caps, so then i doubt that smps is what you need..
I know that amigo ) But my question is not what I need but what I risk : In other words : Will the rectifier allow DC current to pass without causing damage to the module? I guess the diode bridge will set the polarity automatically from power inputs ?
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