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Old 15th Jul 2020, 4:55 pm   #4
G6Tanuki's Avatar
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 9,102
Default Re: Polarity swapping wall wart connector leads

In times-past, Maplin sold replaceable "drop-leads" for this sort of thing.

The wall-wart fed a 2-prong socket; there were then leads with a 2-prong plug [reversible] to connect to a range of jack-plugs to fit your desired load.

Similar things are easily found with a bit of Googlism. RS sell a power-supply with the sort of 'in-line-reversible' connector I mean - see

For simpler setups, there are loads of polarity-reversers available - as an example see
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