A distributed active transformer comprising: a primary winding including: two or more pairs of push/pull amplifiers (106A and 108A, 106B and 108B, 106C and 108C, 106D and 108D); two or more primary winding sections (102A, 102B, 102C,102D), each section having an associated pair of the two or more pairs of push/pull amplifiers and terminating at each end with an amplifier of its associated pair of push/pull amplifiers, each pair of push/pull amplifiers being configured to create an alternating current on the section of primary winding with which it is associated; and one or more switches (110A, 110B, 110C,110D) connected to one push/pull amplifier from the pair associated with a primary winding section of the two or more sections and to one push/pull amplifier from the pair associated with another primary winding section of the two or more sections, the one or more switches being operable to bypass the push/pull amplifier from the pair associated with the primary winding section and the push-pull amplifier from the pair associated with the other primary winding section so as to combine the two sections into a single section; and a secondary winding disposed adjacent to the primary winding for inducing an alternating current in the secondary winding based on an alternating current in the primary winding, the primary winding and the secondary winding disposed on a semiconductor substrate. a primary winding including: two or more pairs of push/pull amplifiers (106A and 108A, 106B and 108B, 106C and 108C, 106D and 108D); two or more primary winding sections (102A, 102B, 102C,102D), each section having an associated pair of the two or more pairs of push/pull amplifiers and terminating at each end with an amplifier of its associated pair of push/pull amplifiers, each pair of push/pull amplifiers being configured to create an alternating current on the section of primary winding with which it is associated; and one or more switches (110A, 110B, 110C,110D) connected to one push/pull amplifier from the pair associated with a primary winding section of the two or more sections and to one push/pull amplifier from the pair associated with another primary winding section of the two or more sections, the one or more switches being operable to bypass the push/pull amplifier from the pair associated with the primary winding section and the push-pull amplifier from the pair associated with the other primary winding section so as to combine the two sections into a single section; and two or more pairs of push/pull amplifiers (106A and 108A, 106B and 108B, 106C and 108C, 106D and 108D); two or more primary winding sections (102A, 102B, 102C,102D), each section having an associated pair of the two or more pairs of push/pull amplifiers and terminating at each end with an amplifier of its associated pair of push/pull amplifiers, each pair of push/pull amplifiers being configured to create an alternating current on the section of primary winding with which it is associated; and one or more switches (110A, 110B, 110C,110D) connected to one push/pull amplifier from the pair associated with a primary winding section of the two or more sections and to one push/pull amplifier from the pair associated with another primary winding section of the two or more sections, the one or more switches being operable to bypass the push/pull amplifier from the pair associated with the primary winding section and the push-pull amplifier from the pair associated with the other primary winding section so as to combine the two sections into a single section; and a secondary winding disposed adjacent to the primary winding for inducing an alternating current in the secondary winding based on an alternating current in the primary winding, the primary winding and the secondary winding disposed on a semiconductor substrate.