Fender low voltage power supply - Page 2

Enzo · 9th January 2012, 11:43 PM

Actually, wire size is about current, not voltage, and the heaters are the highest current draw in the amp. I normally expect the 6VAC winding to be the heaviest wire.

Nigel Goodwin · 10th January 2012, 08:25 AM

Quote:

Originally Posted by Enzo

Actually, wire size is about current, not voltage, and the heaters are the highest current draw in the amp. I normally expect the 6VAC winding to be the heaviest wire.

Exactly, the thickest wire is going to be the heater ones, as that's the highest current - as shown by the thickness of the windings on the transformer.

richardpp · 10th January 2012, 09:58 PM

OK, the heater wiring makes sense now.

Thanks very much to Enzo, and everyone who chimed in.

Best regards,

Richard

maxwedge · 02:05 AM

Looks like someone tried stiffen it up by dumping the tube rectifier and a XLR for the power cord?? B+ is really high (500v??) for a Fender Super which is normally about 450v.

richardpp · 23rd January 2012, 10:11 PM

I think that may have been 500 VDC without power tubes installed. With new tubes and 3 hrs running time it settled down to a typical 460 V. With some older style XLR-type proprietary 250 VAC connector.

11th January 2012, 02:03 AM	#14
maxwedge diyAudio Member Join Date: Jan 2004 Location: CA	Looks like someone tried stiffen it up by dumping the tube rectifier and a XLR for the power cord?? B+ is really high (500v??) for a Fender Super which is normally about 450v. Last edited by maxwedge; 11th January 2012 at 02:05 AM.

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9th January 2012, 11:43 PM	#11
Enzo diyAudio Member Join Date: Sep 2004 Location: Lansing, Michigan	Actually, wire size is about current, not voltage, and the heaters are the highest current draw in the amp. I normally expect the 6VAC winding to be the heaviest wire.

10th January 2012, 09:58 PM	#13
richardpp diyAudio Member Join Date: Nov 2009 Location: Adelaide	OK, the heater wiring makes sense now. Thanks very much to Enzo, and everyone who chimed in. Best regards, Richard

23rd January 2012, 10:11 PM	#15
richardpp diyAudio Member Join Date: Nov 2009 Location: Adelaide	I think that may have been 500 VDC without power tubes installed. With new tubes and 3 hrs running time it settled down to a typical 460 V. With some older style XLR-type proprietary 250 VAC connector.