Power supply circuits incorporating transformers for combining of power amplifier outputs and isolation of load voltage clamping circuits

A power supply circuit comprising:

• a power amplifier configured to receive a direct current (DC) voltage from a first power source and convert the DC voltage to an alternating current (AC) output signal;
• a transformer comprising a first winding, a second winding, and a third winding, wherein the first winding is configured to receive the AC output signal, wherein the second winding is configured to receive an output current based on the AC output signal, and wherein the second winding supplies an AC current to an output terminal and the output terminal supplies AC current to the load via an output filter and wherein the output terminal receives power reflected from the load;
• and
• a rectifier and clamping circuit comprising a plurality of diodes, wherein the diodes are configured to at least two of rectify a voltage across the third winding, clamp a voltage at the output terminal, and return power from the third winding to the first power source or a second power source.

A power supply circuit comprising:

• a means for receiving a direct current (DC) voltage from a first power source and converting the DC voltage to an alternating current (AC) output signal;
• a means for transforming including a first winding, a second winding, and a third winding, wherein the first winding receives the AC output signal, wherein the second winding receives an output current based on the AC output signal, and wherein the second winding supplies AC current to an output terminal and the output terminal supplies AC current to the load via an output filter and wherein the output terminal receives power reflected from the load;
• and
• a rectifier and clamping means including a plurality of diodes arranged to at least two of rectify a voltage across the third winding, clamp a voltage at the output terminal, and return power from the third winding to the first power source or a second power source.