toroid question

NordicNorm · 17th October 2011, 05:58 PM

Howdy!

I have toroid transfo with dual secondaries (120V and 6.3V).

I tried hooking up the 6.3's (blue from one sec. with the green from the other) to make 12.6 V, but I didn't get any values? And the transfo got quite hot?

Before hooking them up together, I did first measure I was getting 6.3 from them.

Where did I go wrong?

Do I also have to connect the two input leads (black and red) together as well? I'm thinking would that give me 230V?

cheers,
Norm

NordicNorm · 17th October 2011, 05:59 PM

Oh, I forgot to provide the link to the transfo:

Antek - AS-05T120

DF96 · 17th October 2011, 06:10 PM

The datasheet is quite clear. You need to identify which winding is which. I assume you understand about the difference between series and parallel wiring?

Did you connect the blue and green together on the same secondary, instead of different ones? A lamp limiter would provide protection in case you get it wrong.

pieter t · 17th October 2011, 06:14 PM

When color codes are correct:

primary (input) blacks together and reds together is for 120 V line (two primaries parallelled);
secondary blue from one with green from the other should give 12,6 V (unloaded voltage will a bit higher though); maybe a wrong color code there.

AndrewT · 18th October 2011, 12:54 PM

There is always a chance, however remote, that the cables are wrongly coded.

Always use a bulb tester until you have convinced yourself that the wiring is correct.

17th October 2011, 05:58 PM	#1
NordicNorm diyAudio Member Join Date: Aug 2010 Location: Canadian Rocky Mountains	toroid question Howdy! I have toroid transfo with dual secondaries (120V and 6.3V). I tried hooking up the 6.3's (blue from one sec. with the green from the other) to make 12.6 V, but I didn't get any values? And the transfo got quite hot? Before hooking them up together, I did first measure I was getting 6.3 from them. Where did I go wrong? Do I also have to connect the two input leads (black and red) together as well? I'm thinking would that give me 230V? cheers, Norm

18th October 2011, 12:54 PM	#5
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	There is always a chance, however remote, that the cables are wrongly coded. Always use a bulb tester until you have convinced yourself that the wiring is correct. __________________ regards Andrew T.

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17th October 2011, 05:59 PM	#2
NordicNorm diyAudio Member Join Date: Aug 2010 Location: Canadian Rocky Mountains	Oh, I forgot to provide the link to the transfo: Antek - AS-05T120

17th October 2011, 06:10 PM	#3
DF96 diyAudio Member Join Date: May 2007	The datasheet is quite clear. You need to identify which winding is which. I assume you understand about the difference between series and parallel wiring? Did you connect the blue and green together on the same secondary, instead of different ones? A lamp limiter would provide protection in case you get it wrong.

17th October 2011, 06:14 PM	#4
pieter t diyAudio Member Join Date: Apr 2009	When color codes are correct: primary (input) blacks together and reds together is for 120 V line (two primaries parallelled); secondary blue from one with green from the other should give 12,6 V (unloaded voltage will a bit higher though); maybe a wrong color code there.

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