voltage

arold19 · 29th December 2002, 03:27 AM

For the Zen variation 4. Nelson propose a 18+18 v so 50V dc.

I just want to know if I can use my transformer 21+21 V so almost 60V dc ?????

MikeW · 29th December 2002, 04:46 AM

You can use it, but modifacations may be needed. The MOSFET 044's are only rated for 55 volts. How many VA is your tranny? If you are going to use for both channels drawing 2 amps a side it will sag a bit. If you have a big enough heatsink you can adjust the zeners to the lower voltage. The last couple of pages of the article gives some advice. I used a 750VA, with a 35 volt secondary. A rectifier for each channel. Under load they only cave out to be 45 volts. Good luck.

GRollins · 29th December 2002, 05:42 AM

Consider a C-R-C combination. Set the size of the resistor to drop the voltage to what you want. It'll give you a quieter rail, as well.
Or you could regulate.

Grey

arold19 · 29th December 2002, 06:14 AM

I am not very good! I don't know what meen "tranny" ?? I will use 2 transformer, one for each channel!! and I have a monster heat sink, no problem for that!!
And I don't know how to set the size of the resistor to drop the voltage ???
can you help me ?? thank you !!!!

arold19 · 29th December 2002, 06:16 AM

under full load, each transformer is 450W maximum !!!!

AudioFreak · 29th December 2002, 06:17 AM

tranny = transformer
I'll assume that you mean 450VA not 450W

arold19 · 29th December 2002, 06:18 AM

on the sheet, it is written 450 w maximum... 500VA maximum

arold19 · 29th December 2002, 06:20 AM

I can use this 2 transformer or it is better to bye two from Plitron ???

AudioFreak · 29th December 2002, 06:33 AM

Ok,

The transformers are 2x21Vac 500VA

Is there a regulation % listed for the transformer?

arold19 · 29th December 2002, 06:36 AM

i don't know !!!!

29th December 2002, 03:27 AM	#1
arold19 diyAudio Member Join Date: Nov 2002 Location: montreal	voltage For the Zen variation 4. Nelson propose a 18+18 v so 50V dc. I just want to know if I can use my transformer 21+21 V so almost 60V dc ?????

29th December 2002, 04:46 AM	#2
MikeW diyAudio Member Join Date: Sep 2002 Location: North of Boston	You can use it, but modifacations may be needed. The MOSFET 044's are only rated for 55 volts. How many VA is your tranny? If you are going to use for both channels drawing 2 amps a side it will sag a bit. If you have a big enough heatsink you can adjust the zeners to the lower voltage. The last couple of pages of the article gives some advice. I used a 750VA, with a 35 volt secondary. A rectifier for each channel. Under load they only cave out to be 45 volts. Good luck. __________________ MikeW

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29th December 2002, 05:42 AM	#3
GRollins diyAudio Member Join Date: Feb 2001 Location: Columbia, SC	Consider a C-R-C combination. Set the size of the resistor to drop the voltage to what you want. It'll give you a quieter rail, as well. Or you could regulate. Grey

29th December 2002, 06:14 AM	#4
arold19 diyAudio Member Join Date: Nov 2002 Location: montreal	I am not very good! I don't know what meen "tranny" ?? I will use 2 transformer, one for each channel!! and I have a monster heat sink, no problem for that!! And I don't know how to set the size of the resistor to drop the voltage ??? can you help me ?? thank you !!!!

29th December 2002, 06:16 AM	#5
arold19 diyAudio Member Join Date: Nov 2002 Location: montreal	under full load, each transformer is 450W maximum !!!!

29th December 2002, 06:17 AM	#6
AudioFreak Warp Engineer On Holiday Join Date: Oct 2001 Location: Queensland, Australia	tranny = transformer I'll assume that you mean 450VA not 450W

29th December 2002, 06:18 AM	#7
arold19 diyAudio Member Join Date: Nov 2002 Location: montreal	on the sheet, it is written 450 w maximum... 500VA maximum

29th December 2002, 06:20 AM	#8
arold19 diyAudio Member Join Date: Nov 2002 Location: montreal	I can use this 2 transformer or it is better to bye two from Plitron ???

29th December 2002, 06:33 AM	#9
AudioFreak Warp Engineer On Holiday Join Date: Oct 2001 Location: Queensland, Australia	Ok, The transformers are 2x21Vac 500VA Is there a regulation % listed for the transformer?

29th December 2002, 06:36 AM	#10
arold19 diyAudio Member Join Date: Nov 2002 Location: montreal	i don't know !!!!

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