That's a 50 Hz transformer. You don't see many of those any more. [ Edit: in consumer goods. ] Transformers only work on fixed AC voltages, in this case 230 V and 19.6 V.
Without a lot of work, the best you could do was a transformer with 2 120 V primary windings, and a double pole double throw switch of some sort that arranges rhe windings in series for 240 V operation, or parallel (with care for the correct phase) for 120 V operation. Sadly, it's all too easy to accidentally use the wrong switch position.
It might be possible to use a wide input DC power supply, providing some 27 VDC (19.6 V x sqrt(2)). A 24 V adjustable output model turned up to maximum might just do. The rectifier will not harm anything, merely dropping a volt or two. But that presumes that nothing is expecting AC. It's a reasonable guess, but not guaranteed.
Last edited by coulomb
on Fri, 13 Jan 2017, 05:25, edited 1 time in total.
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