Quick transformer question

[Windcrest77]

For these Antek torroids, would I hook the yellow and white together to make a 200-0-200 center tap transformer? I'll use the variac.

http://www.antekinc.com/content/AS-1T200.pdf

 

[Tjj226]

Yes, yellow and white go together to form your center tap.

 

[rayma]

Make absolutely certain (with an ohm meter) that the two wires you connect together are from different windings. Otherwise a winding will be damaged and ruin the transformer.

 

[Windcrest77]

Thanks I was gong to run a few volts ac with the scope to double verify the phases of each winding.

 

[rayma]

Great idea. To be safe you can use a signal generator set to 60Hz, with 1k resistor in series.
The colors will be correct for phase, but sometimes which pair make up one winding isn't so clear.

 

[Windcrest77]

Yes, yellow and white go together to form your center tap.

After asking this I decided to make the power supply fully dual-mono for L/R channels, rather than the shared CT supply full-wave the schematic specifies. Since this torroid has two secondary wingdings I'll just use a bridge and CLC on each and have two isolated supplies for each stereo channel. With no extra space needed for another transformer. Same for the DC filaments. Might be better separation I suppose (theoretically).

Come to think of it I kind of like having two identical secondary's rather than a center tapped transformer. You have more options, use them separately, in series for a CT, or in parallel to increase the current rating.

I'll have to rework the voltages for a bridge.

 

[Tjj226]

After asking this I decided to make the power supply fully dual-mono for L/R channels, rather than the shared CT supply full-wave the schematic specifies. Since this torroid has two secondary wingdings I'll just use a bridge and CLC on each and have two isolated supplies for each stereo channel. With no extra space needed for another transformer. Same for the DC filaments. Might be better separation I suppose (theoretically).

Come to think of it I kind of like having two identical secondary's rather than a center tapped transformer. You have more options, use them separately, in series for a CT, or in parallel to increase the current rating.

I'll have to rework the voltages for a bridge.

Let me know how that goes, I have considered doing the same thing a few times.