An adapter can include a voltage doubler rectifier, a first stage converter, and a second stage converter. The voltage doubler rectifier can have a switch and can be configured to rectify a received voltage in response to the switch being in a first position, and to rectify and effectively double the received voltage in response to the switch being in a second position. The first stage converter can be coupled to the voltage doubler rectifier and can be a first type of converter. The first type of converter can be either an isolated converter or a non-isolated converter. The second stage converter can be coupled to the first stage converter and can be a second type of converter. The second type of converter can be either the isolated converter or the non-isolated converter. The second type of converter can be different from the first type of converter.
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