Patent 10326306 was granted and assigned to Power Integrations on June, 2019 by the United States Patent and Trademark Office.
Signal transmission circuitry comprises a conductive transmitting coil, a first power supply, a semiconductor switch to reversibly couple the transmitting coil to the first power supply, control circuitry to control the coupling of the transmitting coil to the first power supply by the semiconductor switch, a second power supply coupled to supply power to the control circuitry.