AnTek Transformers: Two separate secondary windings?

FenderBender11 · 16th March 2012, 01:55 AM

Hello,

Does anyone know if AnTek transformers can be used with each secondary winding being used separately. A lot of manufacturers I see say that they either have to be in series or parallel...

I do not see any mention of this on the AnTek datasheets. Do you reckon I could use each secondary winding individually?

I do NOT want to use it as a center tap transformer.

Thanks.

nigelwright7557 · 16th March 2012, 02:02 AM

Yes you can.

FenderBender11 · 16th March 2012, 02:06 AM

Thank you Nigel.

zigzagflux · 16th March 2012, 02:52 AM

Normally, that recommendation is to ensure the user does not attempt to pull full VA out of 1/2 the primary or 1/2 the secondary windings. The core can handle it, but the individual winding likely cannot (or at least will have much poorer regulation than using both). So to be on the safe side, only load each winding to 1/2 of the total VA. You can use both secondary windings individually, but each winding runs at 1/2VA.

FenderBender11 · 17th March 2012, 04:20 AM

Thanks. So for example...

Antek - AN-1212

This would be 12v-1 @ 2.1A and 12v-2 @ 2.1A?

zigzagflux · 17th March 2012, 04:50 AM

No, that's a 100 VA unit, so you can pull 12V-4A out of each winding simultaneously. 12*4=48 VA on each, which is 1/2 the total VA rating of the transformer. The caution is not to try and pull 8A out of one secondary winding, which the copper may not be rated for.

I see in the data sheet they specifically say the copper is oversized, so you probably do have some overload flexibility, but just be aware of the principle.

FenderBender11 · 17th March 2012, 02:00 PM

Oh I see. Sorry for my ignorance. Well that's good. These transformers are quite cheap actually...

Thanks.

16th March 2012, 01:55 AM	#1
FenderBender11 diyAudio Member Join Date: Jun 2011	AnTek Transformers: Two separate secondary windings? Hello, Does anyone know if AnTek transformers can be used with each secondary winding being used separately. A lot of manufacturers I see say that they either have to be in series or parallel... I do not see any mention of this on the AnTek datasheets. Do you reckon I could use each secondary winding individually? I do NOT want to use it as a center tap transformer. Thanks.

16th March 2012, 02:02 AM	#2
nigelwright7557 diyAudio Member Join Date: Apr 2008 Location: Carlisle, England	Yes you can. __________________ http://www.murtonpikesystems.co.uk PCBCAD50 pcb design software.

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16th March 2012, 02:06 AM	#3
FenderBender11 diyAudio Member Join Date: Jun 2011	Thank you Nigel.

16th March 2012, 02:52 AM	#4
zigzagflux diyAudio Member Join Date: Oct 2006	Normally, that recommendation is to ensure the user does not attempt to pull full VA out of 1/2 the primary or 1/2 the secondary windings. The core can handle it, but the individual winding likely cannot (or at least will have much poorer regulation than using both). So to be on the safe side, only load each winding to 1/2 of the total VA. You can use both secondary windings individually, but each winding runs at 1/2VA.

17th March 2012, 04:20 AM	#5
FenderBender11 diyAudio Member Join Date: Jun 2011	Thanks. So for example... Antek - AN-1212 This would be 12v-1 @ 2.1A and 12v-2 @ 2.1A?

17th March 2012, 04:50 AM	#6
zigzagflux diyAudio Member Join Date: Oct 2006	No, that's a 100 VA unit, so you can pull 12V-4A out of each winding simultaneously. 12*4=48 VA on each, which is 1/2 the total VA rating of the transformer. The caution is not to try and pull 8A out of one secondary winding, which the copper may not be rated for. I see in the data sheet they specifically say the copper is oversized, so you probably do have some overload flexibility, but just be aware of the principle.

17th March 2012, 02:00 PM	#7
FenderBender11 diyAudio Member Join Date: Jun 2011	Oh I see. Sorry for my ignorance. Well that's good. These transformers are quite cheap actually... Thanks.