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Power Jack expert help needed

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Pete:
Hi Ben and Amber, you will probably find that PJ use the same transformer for both 220 and 110 volt versions.
It most likely has two windings that are parallelled for 110 volt, and connected in series for 220 volts.
As far as changing the frequency goes, I can't say about that, it is most likely a software setting. Or it could be a change of crystal oscillator.
You would need to read the many posts on this site about PJs or have a look at the Back Shed site for info there.
Alternately the voltage could be sorted by feeding the output of the inverter into a step down transformer.
The frequency will still be a problem.
Good luck
Pete

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