Transformer Swap

[mundenez]

Hey all. I'm new here so let me know if I've posted this in the wrong place, but:

I've bought a sparkfun rework station and didn't realise it was 110v. Inside is the transformer in the pic. I was thinking about swapping it with something like this: https://www.aliexpress.com/item/Free-shipping-2PCS-30W-dual-9V-30W2-9V-transformer-power-transformer-Input-220V-50Hz-output-Two/32737943794.html?spm=2114.01010208.3.1.RuhbU9&ws_ab_test=searchweb0_0,searchweb201602_5_10065_10068_433_434_10136_10137_10138_10060_10062_10141_10056_126_10055_10054_10059_10531_10099_10530_10103_10102_10096_10052_10144_10053_10050_10107_10142_10051_10106_10143_10526_10529_10084_10083_10080_10082_10081_10110_10111_10112_10113_10114_10037_10078_10079_10077_10073_10070_10122_10123_10124-10531,searchweb201603_2,afswitch_1,ppcSwitch_5,single_sort_0_default&btsid=e3f5d050-ed8e-4314-9d34-c68b679ffc5e&algo_expid=b9cb994e-8fe6-44e8-a158-c150a7f6a7b4-0&algo_pvid=b9cb994e-8fe6-44e8-a158-c150a7f6a7b4

Any reasons why this would not work?

[amspire]

Does the transformer you currently have have two 110V primary windings that can be in series or parallel?

From the label, it looks like is does have two windings.

[Anks]

That transformer as amspire said can be wired for 115v or 230v AC

[mundenez]

I'll get a better photo. - Makes sense. So I connect the green from one coil into the red of the other and then treat the two remaining as the 220V primary supply?

[amspire]

Probably. You can check with multimeter to check which pairs belong to which winding. If each winding has a red and green wire, and if currently the two reds and the two greens are shorted, then connect a red from one winding to the green of the other.

But sure the board that that connector plugs into doesn't have provision for selecting the voltage? A switch, or there are links on the board? That is what I would expect.

Also if there is a fuse, you can change to half the current.