L3Harris Technologies. has been granted a patent for a circuit designed to ignite and sustain electron discharges. The circuit features an ignitor with a high voltage transformer, a switch, and a reset circuit, along with a sustaining circuit that includes a current source and rectifiers. GlobalData’s report on L3Harris Technologies gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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Circuit for igniting and sustaining electron discharge
The granted patent US12044407B2 presents a circuit designed for igniting and sustaining an electron discharge. Central to this invention is an ignitor circuit that features a voltage transformer with a primary and secondary winding, where the primary includes distinct dot and non-dot terminals. A switch, which receives a driving signal, is connected in series with the primary and a DC source return. The circuit also incorporates a reset mechanism parallel to the primary, a first rectifier linking the secondary to a keeper, and a second node connecting the secondary to a dispenser cathode. Additionally, a sustaining circuit is included, featuring a current source and a second rectifier that connects the current source to the first node.
Further claims detail enhancements to the circuit, such as the inclusion of multiple power sources for the ignitor and sustaining circuits, and specifications regarding the voltage transformer's connection to a DC power source. The patent outlines various winding ratios for the transformer, emphasizing configurations without an output capacitor. The reset circuit is defined by a series arrangement of a diode and a Zener diode, while the switch is specified to be a MOSFET controlled by a controller. The current source is described as an isolated converter, potentially a buck-based converter, with provisions for a DC load that exceeds the expected discharge voltage of the dispenser cathode. Overall, the patent delineates a comprehensive framework for a circuit that effectively manages electron discharge ignition and maintenance.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
