Abstract: Disclosed is an electronic assembly with an integrated spiral inductor. The electronic assembly includes a substrate that has through holes, which are disposed along a side edge of the substrate. A wire of the spiral inductor is wound several turns, in spiral fashion, around the side edge by way of the through holes. A magnetic core can be included in the spiral inductor for increased inductance. The electronic assembly can have an additional substrate, and the spiral inductor spirals around side edges of the substrates by way of through holes of the substrates.

Abstract: A printed circuit board (PCB) has electronic components of an electrical circuit mounted thereon. The PCB includes a wire that is coiled through the PCB one or more turns to form a coil of an inductor or an antenna that is integrated with the PCB. The PCB can include a cutout for accepting an inductor core. The shape and/or size of the inductor core can be varied to achieve a target inductance. Both ends of the wire can be electrically connected to corresponding nodes of the electrical circuit. One end of the wire can be electrically connected to a node of the electrical circuit, and the other end of the wire can be electrically connected to an antenna body.

Abstract: An electronic assembly has a substrate and an inductor. The inductor has a wire that turns several times through the substrate by way of through holes. The wire, by way of the through holes, winds for several turns along a dimension and winds for several turns along another dimension. The wire in turns along a dimension crosses the wire in turns along the other dimension. The inductor is electrically connected to an electrical circuit and can be used as a discrete component or antenna of the electrical circuit.

Abstract: A printed circuit board (PCB) has electronic components of an electrical circuit mounted thereon. The PCB includes a wire that is coiled through the PCB one or more turns to form a coil of an inductor or an antenna that is integrated with the PCB. The PCB can include a cutout for accepting an inductor core. The shape and/or size of the inductor core can be varied to achieve a target inductance. Both ends of the wire can be electrically connected to corresponding nodes of the electrical circuit. One end of the wire can be electrically connected to a node of the electrical circuit, and the other end of the wire can be electrically connected to an antenna body.

Abstract: A circuit board has an edge connector with signal traces. The signal traces are formed on a dielectric layer of the circuit board. A reference trace is formed within the dielectric layer or on another surface of the dielectric layer. Parameters of the reference trace are adjusted to set an impedance of a single-ended signal trace or a differential impedance of two adjacent signal traces.

Abstract: A circuit board has an electrical circuit and a connector that is attached to the circuit board. The connector has metal contacts. A housing of the connector has an embedded reference metal layer that is disposed under a single-ended metal contact or differential metal contacts. The reference metal layer sets the impedance of the single-ended metal contact or the differential metal contacts.

Abstract: A circuit board has an edge connector with signal traces. The signal traces are formed on a dielectric layer of the circuit board. A reference trace is formed within the dielectric layer or on another surface of the dielectric layer. Parameters of the reference trace are adjusted to set an impedance of a single-ended signal trace or a differential impedance of two adjacent signal traces.

Abstract: A circuit board has an edge connector with signal traces. The signal traces are formed on a dielectric layer of the circuit board. A reference trace is formed within the dielectric layer or on another surface of the dielectric layer. Parameters of the reference trace are adjusted to set an impedance of a single-ended signal trace or a differential impedance of two adjacent signal traces.

Abstract: A circuit board has an electrical circuit and a connector that is attached to the circuit board. The connector has metal contacts. A housing of the connector has an embedded reference metal layer that is disposed under a single-ended metal contact or differential metal contacts. The reference metal layer sets the impedance of the single-ended metal contact or the differential metal contacts.

Abstract: A circuit board has an electrical circuit and a connector that is attached to the circuit board. The connector has metal contacts. A housing of the connector has an embedded reference metal layer that is disposed under a single-ended metal contact or differential metal contacts. The reference metal layer sets the impedance of the single-ended metal contact or the differential metal contacts.

Abstract: A circuit board has an edge connector with signal traces. The signal traces are formed on a dielectric layer of the circuit board. A reference trace is formed within the dielectric layer or on another surface of the dielectric layer. Parameters of the reference trace are adjusted to set an impedance of a single-ended signal trace or a differential impedance of two adjacent signal traces.

Abstract: A circuit board has an edge connector with signal traces. The signal traces are formed on a dielectric layer of the circuit board. A reference trace is formed within the dielectric layer or on another surface of the dielectric layer. Parameters of the reference trace are adjusted to set an impedance of a single-ended signal trace or a differential impedance of two adjacent signal traces.

Abstract: A circuit board has an electrical circuit and a connector that is attached to the circuit board. The connector has metal contacts. A housing of the connector has an embedded reference metal layer that is disposed under a single-ended metal contact or differential metal contacts. The reference metal layer sets the impedance of the single-ended metal contact or the differential metal contacts.

Abstract: A circuit board has an edge connector with signal traces. The signal traces are formed on a dielectric layer of the circuit board. A reference trace is formed within the dielectric layer or on another surface of the dielectric layer. Parameters of the reference trace are adjusted to set an impedance of a single-ended signal trace or a differential impedance of two adjacent signal traces.

Abstract: A circuit board has an edge connector with signal traces. The signal traces are formed on a dielectric layer of the circuit board. A reference trace is formed within the dielectric layer or on another surface of the dielectric layer. Parameters of the reference trace are adjusted to set an impedance of a single-ended signal trace or a differential impedance of two adjacent signal traces.

Abstract: A vehicle alarm system includes at least one alarm transmitting device and at least one alarm receiving device. Each alarm transmitting device is disposed in at least one first vehicle. The alarm transmitting device includes a satellite positioning system. The alarm transmitting device of the first vehicle generates an alarm signal and wirelessly transmits an alarm signal. The alarm signal includes a destination signal and a vehicle coordinate signal. The satellite positioning system generates the vehicle coordinate signal. The destination signal includes a coordinate of a destination. The first vehicle moves toward the destination. Each alarm receiving device is disposed in a second vehicle. The alarm receiving device of the second vehicle receives the alarm signal wirelessly. The alarm receiving device generates an alert signal according to the alarm signal.

Abstract: A calibration method for compensating a home position of a 3D printer is disclosed. According to a movement position of a movable mechanism of the 3D printer, a control voltage is provided to a microcontroller. The calibration method includes steps as follows. The movable mechanism moves in a home direction. It is to determine whether the microcontroller receives a first logic level signal which is transited according to the corresponding control voltage. If yes, the movable mechanism moves in a direction opposite to the home direction. It is to determine whether the microcontroller receives a second logic level signal which is transited according to the corresponding control voltage. If yes, the movable mechanism moves a compensation distance corresponding to a step compensation amount in the home direction. Therefore, the calibration method is provided to reduce circuit costs, simplify designs of control circuits, and accurately calibrate the home position.

Abstract: An intermittent excitation apparatus of a 3D printer includes at least one guide, a drive rod, a movable seat, and a microcontroller. When the microcontroller controls a first motor in a non-excitation and non-rotation condition, the movable seat is fixed on the drive rod and the 3D printer performs a plane printing operation. When the microcontroller controls the first motor in an excitation and rotation condition, the movable seat moves along the drive rod. Therefore, it is to significantly reduce heat generated inside the first motor, decrease costs, and reduce the size of the 3D printer.

Abstract: Wireless access point (AP) and methods for providing wireless connectivity to wireless client are provided. According to one embodiment, a wireless AP includes a host hardware platform and a hypervisor for providing a first virtual machine where a first guest operating system (OS) is configured to run on the first virtual machine. A wireless module is configured to run on the first guest OS for managing the wireless connection to at least one wireless client. A wireless AP management console is configured to run on the wireless AP but outside the first guest OS and to manage operations of the wireless module and the first guest OS.

Abstract: The invention provides the Magnetoelectric Effect Material consisted of a single isotope, the alloy of isotopes, or the compound of isotopes. The invention applies enrichment and purification to increase the isotope abundance, to create the density of nuclear exciton by irradiation, and therefore increase the magnetoelectric effect of the crystal of single isotope, the alloy crystal of isotopes and the compound crystal of isotopes. The invention provides the manufacturing method including the selection rules of isotopes, the fabrication processes and the structure of composite materials. The invention belongs to the area of the nuclear science and the improvement of material character. The invention using the transition of entangled multiple photons to achieve the delocalized nuclear exciton. The mix of selected isotopes adjusts the decay lifetime of nuclear exciton and the irradiation efficiency to generate the nuclear exciton.