2 PSU sharing the same Power transformer?

rvrazvan · 10th July 2011, 03:49 PM

Will i have any beneffits from havind two separate PSU(one for each channel) sharing the same power transformer? I want to build a dual mono amp.
I have two similar transformers(shape, power rating), one 220v/220v and one 220v/6.3v. I can rebuild them if it is necessary, but i will lose time doing so.

rvrazvan · 11th July 2011, 10:08 AM

up up up

DF96 · 11th July 2011, 10:10 AM

If they share a transformer secondary then they are not separate PSUs. You can separate the outputs, but you probably can't separate the grounds. If you want to build two fairly separate PSUs from one transformer then you need two separate secondary windings.

Original Burnedfingers · 11th July 2011, 10:33 AM

Two mono supplies means a power transformer for each channel. This means a transformer for high voltage and transformer for filament. it does not means sharing one transformer for high voltage and another transformer for filament needs. I have (2) mono block Quicksilver amplifiers. Each are independant units. There is no cross talk with dual supplies that you have sharing the power supplies.

10th July 2011, 03:49 PM	#1
rvrazvan diyAudio Member Join Date: Jul 2010	2 PSU sharing the same Power transformer? Will i have any beneffits from havind two separate PSU(one for each channel) sharing the same power transformer? I want to build a dual mono amp. I have two similar transformers(shape, power rating), one 220v/220v and one 220v/6.3v. I can rebuild them if it is necessary, but i will lose time doing so.

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11th July 2011, 10:08 AM	#2
rvrazvan diyAudio Member Join Date: Jul 2010	up up up

11th July 2011, 10:10 AM	#3
DF96 diyAudio Member Join Date: May 2007	If they share a transformer secondary then they are not separate PSUs. You can separate the outputs, but you probably can't separate the grounds. If you want to build two fairly separate PSUs from one transformer then you need two separate secondary windings.

11th July 2011, 10:33 AM	#4
Original Burnedfingers diyAudio Member Join Date: Nov 2002	Two mono supplies means a power transformer for each channel. This means a transformer for high voltage and transformer for filament. it does not means sharing one transformer for high voltage and another transformer for filament needs. I have (2) mono block Quicksilver amplifiers. Each are independant units. There is no cross talk with dual supplies that you have sharing the power supplies.

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