Transformer wiring question, series, parallel and center tapped - Page 2

WinCrazy · 6th November 2008, 03:34 PM

Swin1, Because the xformer has 3 wires, you can get ONLY two 16 volt outputs (which may be tied into parallel to provide up to double the possible current or a SINGLE 32 volt out put. You CAN NOT get any 22 volt output !! Also know that the output voltage are *very* approximate. You need to know whether the stated voltages are peak voltages or power-average voltages (RMS).

AndrewT · 7th November 2008, 08:15 AM

ignore post 11.
you cannot parallel a centre tapped to obtain double the current.
You can get a 22Vac output, but it is limited to the current available from the 38Vac tapping. But, it is not isolated from any other output voltage, this restricts what you are able to do with the other tappings.

megajocke · 7th November 2008, 07:58 PM

How do we know the 16-0-16V winding is not a low current one?

Doing what AndrewT suggest, unwrapping the plastic and separating the centertap is best. You can also check wire diameters then to calculate how much current you can draw from the different windings. A milliohmmeter is another possibility.

6th November 2008, 03:34 PM	#11
WinCrazy diyAudio Member Join Date: Nov 2008	*Dealing with AC, not* DC** Swin1, Because the xformer has 3 wires, you can get ONLY two 16 volt outputs (which may be tied into parallel to provide up to double the possible current or a SINGLE 32 volt out put. You CAN NOT get any 22 volt output !! Also know that the output voltage are very approximate. You need to know whether the stated voltages are peak voltages or power-average voltages (RMS).

7th November 2008, 08:15 AM	#12
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	ignore post 11. you cannot parallel a centre tapped to obtain double the current. You can get a 22Vac output, but it is limited to the current available from the 38Vac tapping. But, it is not isolated from any other output voltage, this restricts what you are able to do with the other tappings. __________________ regards Andrew T.

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7th November 2008, 07:58 PM	#13
megajocke diyAudio Member Join Date: Jan 2003 Location: Solna	How do we know the 16-0-16V winding is not a low current one? Doing what AndrewT suggest, unwrapping the plastic and separating the centertap is best. You can also check wire diameters then to calculate how much current you can draw from the different windings. A milliohmmeter is another possibility.

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