Transformer for high power amp

kon_udorn · 5th April 2004, 05:09 PM

Hello,
My amp need 50-0-50 Vac transformer but I have 25-0-25 VAC two units in hand. Does any one has an idea to reach my taget?
Is there any problems if I try this

K-amps · 5th April 2004, 08:07 PM

Looks different.... Shouldnt you connect your "virtual center taps" from the Toroids to the Gnd instead of creating a Quad like gnd from the main caps?

basically the "D" of Toroid 1 will be connected to the "A" of Toroid 2 to make your center tap or gnd....

D

BlackDog · 5th April 2004, 08:32 PM

The transformer wiring looks ok to me (as long as you really are planning to use two bridge rectifires, not one) , but I think you have the bridge rectifiers wired incorretly.

The negative of the top bridge should connect to the positive of the bottom bridge.....

that's all

Steve

kon_udorn · 6th April 2004, 01:21 AM

Hi,
Oh yes, negative of top bridge connected to positive of the bottom one.
How much VA I should get if each one has 350VA?

BlackDog · 8th April 2004, 05:07 AM

Quote:

Originally posted by kon_udorn
How much VA I should get if each one has 350VA?

You will have the equivalent of one 700VA 50-0-50 transformer..

5th April 2004, 08:32 PM	#3
BlackDog diyAudio Member Join Date: Feb 2004 Location: Wellington, New Zealand	Trannies OK, bridges wrong The transformer wiring looks ok to me (as long as you really are planning to use two bridge rectifires, not one) , but I think you have the bridge rectifiers wired incorretly. The negative of the top bridge should connect to the positive of the bottom bridge..... that's all Steve

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5th April 2004, 08:07 PM	#2
K-amps diyAudio Member Join Date: Nov 2003 Location: Indiana	Looks different.... Shouldnt you connect your "virtual center taps" from the Toroids to the Gnd instead of creating a Quad like gnd from the main caps? basically the "D" of Toroid 1 will be connected to the "A" of Toroid 2 to make your center tap or gnd.... D

6th April 2004, 01:21 AM	#4
kon_udorn diyAudio Member Join Date: Apr 2004 Location: Udorn Tani province	Hi, Oh yes, negative of top bridge connected to positive of the bottom one. How much VA I should get if each one has 350VA?

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