-
公开(公告)号：US11979020B1
公开(公告)日：2024-05-07
申请号：US18569021
申请日：2022-06-02
发明人： Yichao Ma
摘要： An apparatus includes an absorption circuit, a control circuit and a hot plug line; an input end of the absorption circuit is connected to an input end of the hot plug line, an input end of the control circuit is connected to the input end of the hot plug line, output ends of the absorption circuit and the control circuit are grounded, an output end of the hot plug line is connected to an input end of a sub-node mainboard, and the input end of the hot plug line is connected to a power supply end of a whole cabinet; the absorption circuit includes a first capacitor; in response to the hot plug line being connected to the power supply end of the whole cabinet, the first capacitor is not powered on; in response to the sub-node mainboard being powered on, the first capacitor is powered on.
-
2.发明公开公开(公告)号：US20240079868A1
公开(公告)日：2024-03-07
申请号：US18201182
申请日：2023-09-14
申请人： Plamen Doynov
发明人： Plamen Doynov
IPC分类号： H02H9/04 , G01R31/12 , G01R31/327 , H02H5/00
摘要： A method and system for suppressing EMP-induced voltage surges due to transient electromagnetic energy disturbance such as a detonation of a nuclear weapon at high altitude generating an EMP (HEMP) comprising E1, E2, and E3 component pulses. Surge protection assemblies are mounted inline, intermediate AC and DC distribution power lines and a plurality of electrical and electronic devices, powered by the lines. The inline mounting of the reconfigurable surge suppression system eliminates any time delay response of the plurality of protecting assemblies and the allowable voltage amplitude level of the protecting assemblies are selected and combined to achieve a predefined desired response time and protection level capacity to react to and mitigate the E1, E2, and E3 components of a complex multi-pulse EMP pulse generated by detonation of a nuclear weapon at high altitude (HEMP). The reconfigurable surge suppressing systems is interoperable with plurality of electrical interfaces.
-
公开(公告)号：US20240063215A1
公开(公告)日：2024-02-22
申请号：US18209090
申请日：2023-06-13
发明人： FANG-WEN LIU
CPC分类号： H01L27/0288 , H01L27/0266 , H01L27/0296 , H01L27/0292 , H02H9/045
摘要： An electrostatic discharge (ESD) protection circuit is provided. The protection circuit includes a MOS transistor and a resistor. The MOS transistor is electrically coupled to a core circuit. The resistor is electrically coupling to a gate of the MOS transistor for creating a bias on the gate to directing an ESD current to a ground when an ESD event occurs on the core circuit. A layout of the MOS transistor is spaced apart from a layout of the core circuit by a layout of a dummy structure. The resistor is formed by utilizing a portion of the dummy structure.
-
公开(公告)号：US11888310B1
公开(公告)日：2024-01-30
申请号：US17412017
申请日：2021-08-25
摘要： Methods and apparatus to monitor the precharging of high voltage circuits are disclosed. In one embodiment, an apparatus includes a switch that selectively enables or disables precharge current to a high voltage circuit based on a switch control signal. The apparatus also includes a comparison circuit that compares a scaled version of a circuit voltage to a reference voltage to generate the switch control signal. In one embodiment, the switch control signal is generated to enable the precharge current when the scaled version of the circuit voltage is greater than the reference voltage.
-
公开(公告)号：US11888288B2
公开(公告)日：2024-01-30
申请号：US17102372
申请日：2020-11-23
发明人： Chang Joon Park , Martin Francis Galinski , Niranjan Achugundla Puttaswamy , Brandon Baxter Harris , Patrick Codd , Barry Thompson
摘要： A system is provided for maintaining a safe operating area while also providing a suitable forward bias voltage to drive a laser diode. The system can monitor a voltage that is applied to a laser diode driver using a threshold that is based on the fabrication process of the laser diode driver. For example, a system can utilize a first threshold for a laser diode driver that is fabricated utilizing a 10 nm process and utilize a second threshold for another laser diode driver that is fabricated utilizing a 20 nm process. The threshold can also be based on a color of the laser or a desired operation mode. The system can monitor a voltage applied to a laser diode using different thresholds while controlling a bleed current to ensure that the laser diode is forward biased while mitigating the risk of silicon breakdown of the laser diode driver.
-
公开(公告)号：US11870246B2
公开(公告)日：2024-01-09
申请号：US16411251
申请日：2019-05-14
发明人： Shishir Goyal , Lokesh Kumar Gupta
IPC分类号： H02H9/04 , G01R19/10 , H02H1/00 , G01R19/165 , H03K17/082
CPC分类号： H02H9/045 , G01R19/10 , G01R19/16571 , H02H1/0007 , H03K17/0822 , H03K17/0826
摘要： A positive overshoot detection circuit comprises a transistor coupled to a current mirror, a reference current source coupled to the current mirror, and a comparator coupled to the reference current source and the current mirror. The comparator output indicates whether the current mirror's current is greater than the reference current source's current. A control input and a current terminal of the transistor are coupled to a clamping circuit. A negative overshoot detection circuit comprises a biasing sub-circuit coupled to a transistor, a resistor coupled to the transistor, and a comparator coupled to the transistor and the resistor. The comparator output indicates whether the transistor is in an on or off state. The biasing sub-circuit is coupled to a clamping circuit. In some implementations, the comparator outputs from the positive and negative overshoot detection circuits are provided to a driver circuit, which modifies its operation.
-
公开(公告)号：US11843244B2
公开(公告)日：2023-12-12
申请号：US17460771
申请日：2021-08-30
申请人： ROHM CO., LTD.
发明人： Akira Aoki
CPC分类号： H02H9/045 , G01R19/0092 , H02H1/0007
摘要： The present disclosure provides a current detection circuit having a high detection precision. The current detection circuit includes: a current output type differential amplifier; a first input resistor, configured to be connected between a first input end of the differential amplifier and a first current sense terminal; a second input resistor, configured to be connected between a second input end of the differential amplifier and a second current sense terminal; an output resistor, configured to be connected to an output end of the differential amplifier; a first feedback current path, configured to allow a first feedback current to flow between the first input end and the output end of the differential amplifier; and a second feedback current path, configured to allow a second feedback current to flow between the second current sense terminal and the output end of the differential amplifier.
-
公开(公告)号：US20230367343A1
公开(公告)日：2023-11-16
申请号：US18350881
申请日：2023-07-12
CPC分类号： G05F1/46 , G01R19/2513 , H04W4/80 , G01R27/16 , H02H9/045 , H02H9/041 , Y02D30/70 , H04W88/08
摘要： Methods of powering a radio that is mounted on a tower of a cellular base station are provided in which a direct current (“DC”) power signal is provided to the radio over a power cable and a voltage level of the output of the power supply is adjusted so as to provide a substantially constant voltage at a first end of the power cable that is remote from the power supply. Related cellular base stations and programmable power supplies are also provided.
-
公开(公告)号：US11726508B2
公开(公告)日：2023-08-15
申请号：US17504966
申请日：2021-10-19
CPC分类号： G05F1/46 , G01R19/2513 , G01R27/16 , H02H9/045 , H04W4/80 , H02H9/041 , H04W88/08 , Y02D30/70
摘要： Methods of powering a radio that is mounted on a tower of a cellular base station are provided in which a direct current (“DC”) power signal is provided to the radio over a power cable and a voltage level of the output of the power supply is adjusted so as to provide a substantially constant voltage at a first end of the power cable that is remote from the power supply. Related cellular base stations and programmable power supplies are also provided.
-
公开(公告)号：US11677234B2
公开(公告)日：2023-06-13
申请号：US17502088
申请日：2021-10-15
CPC分类号： H02H9/025 , B64F5/60 , H02H1/0007 , H02H9/045 , H02J7/00304 , H03K17/0822
摘要： Provided are embodiments for a system for performing input power detection. The system includes a first input for a first power source, a second input for a second power source, and a controller that is operably coupled to the first power source and the second power source. The system also includes a first path connecting a first circuit to the first power supply, wherein the first path comprises a first field effect transistor (FET) that is operated to inhibit leakage current flow to the first circuit, and a second path connecting a second circuit to the second power supply, wherein the second path comprises a second FET that is operated to inhibit leakage current flow to the second circuit. Also provided are embodiments for a method for performing input power detection.
-
-
-
-
-
-
-
-
-
搜索结果
247 条记录 (耗时 0.021 秒)
