64 results about "Resistive coupling" patented technology

A power supply controller having a multi-function terminal. In one embodiment, a power supply controller for switched mode power supply includes a drain terminal, a source terminal, a control terminal and a multi-function terminal. The multi-function terminal may be configured in a plurality of ways providing any one or some of a plurality of functions including on / off control, external current limit adjustments, under-voltage detection, over-voltage detection and maximum duty cycle adjustment. The operation of the multi-function terminal varies depending on whether a positive or negative current flows through the multi-function terminal. A short-circuit to ground from the multi-function terminal enables the power supply controller. A short-circuit to a supply voltage from the multi-function terminal disables the power supply controller. The current limit of an internal power switch of the power supply controller may be adjusted by externally setting a negative current from the multi-function terminal. The multi-function terminal may also be coupled to the input DC line voltage of the power supply through a resistance to detect an under-voltage condition, an over-voltage condition and / or adjust the maximum duty cycle of power supply controller. Synchronization of the oscillator of the power supply controller may also be realized by switching the multi-function terminal to power or ground at the desired times.

Systems, articles, and methods for surface electromyography (“EMG”) sensors that combine elements from traditional capacitive and resistive EMG sensors are described. For example, capacitive EMG sensors that are adapted to resistively couple to a user's skin are described. Resistive coupling between a sensor electrode and the user's skin is galvanically isolated from the sensor circuitry by a discrete component capacitor included downstream from the sensor electrode. The combination of a resistively coupled electrode and a discrete component capacitor provides the respective benefits of traditional resistive and capacitive (respectively) EMG sensor designs while mitigating respective drawbacks of each approach. A wearable EMG device that provides a component of a human-electronics interface and incorporates such capacitive EMG sensors is also described.

An interconnection structure for coupling conductive layers of a circuit board includes a pin configured to be press-fitted in an aperture traversing the circuit board, to electrically couple the conductive traces. The pin may be placed in a predrilled aperture, or driven into the circuit board, forming the aperture thereby. The pin may also be configured as a punch, removing a plug of material as it is driven therethrough. The pin may comprise a capacitive or resistive region configured to capacitively or resistively couple the first and second traces. The pin may be configured such that capacitive or resistive values are selectable according to a depth to which the pin is positioned in the aperture. The pin may serve as an offset post for mounting the circuit board to a chassis. In such a case, the pin may be provided with a longitudinal aperture configured to receive a threaded screw.

The invention relates to a determination and protection method for influence of super-high voltage alternating current line on an oil and gas pipeline. The method comprises the following steps: firstly, building an equivalent circuit model of a multi-conductor transmission system consisting of a super-high voltage alternating current transmission line and a buried metal pipeline; calculating and adding the interferences of the transmission line on the pipeline through inductive coupling in a normal state and a short circuit state to get a total interference; calculating and analyzing factors leading to the fact that the transmission line influences the degree of the electromagnetic interference of the transmission line on the metal pipeline under different conditions, and calculating and analyzing the influence of an alternating current on corrosion of the metal pipeline; meanwhile, carrying out simulation experiments of inductive coupling and resistive coupling respectively; and summarizing the analysis of the influence factors and putting forward effective protection measures. Comparison of experimental data obtained in the experiments shows that the method has high accuracy. So the method can be used for accurate calculation of electromagnetic protective distance, parallel length and crossing angle of high voltage transmission lines and buried metal pipelines as well as for research on corrosion and protection of buried metal pipelines.

A mixer for a radio transceiver includes a commutating mixer switch having a first differential input port coupled to a DC offset cancellation path. The first differential input port of the mixer switch includes a first terminal coupled to a first end of a first resistor and a second terminal coupled to a first end of a second resistor. Second ends of the first and second resistors are configured to receive a differential input signal. The DC offset cancellation path may provide a resistively coupled DC calibration signal for reducing the magnitude of DC offsets that may be present at the input of the mixer switch. The concept can be used for either image or non-image reject mixers.

A microwave directional coupler includes a microstrip conductor formed on a dielectric substrate and forming a main transmission line having in and out ports that receive signals to be coupled. A substantially U-shaped microstrip conductor is formed over the dielectric substrate adjacent to the main transmission line and forms a secondary transmission line having a coupling section and coupler port. A load resistor is formed within the secondary transmission line, and the coupling section is less than a quarter wavelength of a center frequency.

A faucet includes a logical control, a spout, a hub, a handle, and a touch control operably coupled to at least one of the spout, the hub, and the handle.

A multiplexer for selecting a single output signal from a plurality of input signals. For a plurality of complementary input signal pairs in particular, the multiplexer includes for each pair of complementary input signals a control sub-circuit having a selection switch and a common resistance in parallel. The switch and the common resistance have a common low-potential node that is tied to a pair of resistances that are in parallel, wherein each of the parallel resistances is coupled to the respective high-potential nodes of a differential amplifier. A particular pair of incoming complementary input signal pairs controls the differential amplifier. An off-circuit selection signal selects which switch of a plurality of control sub-circuits is activated. When a switch is on, it creates a bypassing of the common resistance, thereby enabling the turn-on of output drivers coupled to the differential amplifier. When a switch is off, the potential drops across the common resistance and the parallel resistances reduce the potential at the output drivers' control nodes enough to block their turn-on. As a result, the only output drivers providing signal output are those associated with the one selected control sub-circuit having its switch turned on.

A semiconductor memory device and method of operation are provided for a multi-bank memory array (100) with an address fault detector circuit (24, 28) connected to split word lines (WLn-WLm) across multiple banks, where the address fault detector circuit includes at least a first MOSFET transistor (51-54) connected to each word line for detecting an error-free operation mode and a plurality of different transient address faults including a “no word line select,”“false word line select,” and “multiple word line select” failure mode at one of the first and second memory banks. In selected embodiments, the address fault detector provides resistive coupling (33-40) between split word lines across multiple banks to create interaction or contention between split word lines to create a unique voltage level on a fault detection bit line during an address fault depending on the fault type.

A plasma processing system with improved component temperature control is disclosed. The system may include a plasma processing chamber having a chamber wall. The system may also include an electrode disposed inside the plasma processing chamber. The system may also include a support member disposed inside the plasma processing chamber for supporting the electrode. The system may also include a support plate disposed outside the chamber wall. The system may also include a cantilever disposed through the chamber wall for coupling the support member with the support plate. The system may also include a lift plate disposed between the chamber wall and the support plate. The system may also include thermally resistive coupling mechanisms for mechanically coupling the lift plate with the support plate.

The invention discloses a program controlled resistance coupling capacitance simulator. The program controlled resistance coupling capacitance simulator comprises a microcontroller, a multi-channel relay driver and a resistance coupling capacitance module, wherein the resistance coupling capacitance module comprises a multi-resistance adjustable resistance module and a multi-capacitance adjustable capacitance module connected in parallel, and the multi-channel relay driver drives a switching device in the resistance coupling capacitance module.

A resistance ladder comprises a plurality of resistors in series, with taps for producing comparison voltage levels for an analog-to-digital converter (ADC), coupled at its ends to reference and common voltages via first and second adjustable resistances. The reference voltage is produced by an amplifier whose gain depends on a resistance ratio that is trimmed to determine a gain or full-scale range of the ADC. Offset trimming for the ADC is provided by making equal and opposite changes to the first and second adjustable resistances, so that the full-scale range is unchanged and the offset and gain adjustments are independent of one another.

A faucet includes a logical control, a spout, a hub, a handle, and a touch control operably coupled to at least one of the spout, the hub, and the handle.

An electrostatic discharge protection circuit includes an input node coupled to receive an input signal and an output node coupled to output the input signal to an internal circuit. A first inductor is coupled to the input node and to the output node, and a second inductor is coupled to the output node and to a first power supply node through a resistance. A plurality of protection devices are coupled to the first and second inductors and are disposed in parallel with each other.

An oscillator for use within an implantable medical device is provided. The oscillator includes a resonator and a first switch coupled to a first resistive network. The first resistive network provides a first electrical path through the first switch and a second electrical path not going through the switch. The oscillator additionally includes a second switch coupled to a second resistive network. The second resistive network provides a third electrical path through the second switch and a fourth electrical path not going through the switch. Furthermore, the oscillator includes a transistor, the base terminal coupled with the first resistive network and the resonator and the emitter terminal coupled to the fourth resistor. The second electrical path with the first switch opened has a substantially higher resistance than the first electrical path when the first switch is closed. In addition, the fourth electrical path with the second switch opened has a substantially higher resistance than the third electrical path when the second switch is closed.

The invention provides a coupling-degree-adjustable bidirectional coupler which comprises a main microstrip line and an auxiliary microstrip line which are parallel to each other, wherein one end of the main microstrip line is an input end, the other end of the main microstrip line is a straight-through end, the coupling microstrip line is perpendicular to the auxiliary microstrip line, one end of the coupling microstrip line is connected to the midpoint of the auxiliary microstrip line, and the other end of the coupling microstrip line forms a coupling end; two resistors a and b are arranged in the coupling microstrip line; and one side of the coupling microstrip line is provided with an impedance open-circuit line. Compared with a traditional structure, the symmetrical structure ensures that the same coupling degree can be realized at a coupling end regardless of the flow direction of signals; meanwhile, the coupling degree can be conveniently adjusted within a certain range through the design mode of the adjusting resistor, so that the requirements of different users are met, the coupler can be widely applied to transmitting and receiving circuits, meanwhile, flexible adjustment can be carried out, and the application range of the coupler is widened.

The invention discloses a plane lossy filter of a hybrid structure. A micro-strip resonator and a substrate integrated waveguide resonator which are in bilateral symmetry are arranged, an input-output micro-strip line is respectively connected to the micro-strip resonator and the substrate integrated waveguide resonator through a first input-output micro-strip connecting line and a second input-output micro-strip connecting line, and the micro-strip resonator and the substrate integrated waveguide resonator are connected with an output micro-strip line of the lossy filter through the first input-output micro-strip connecting line and the second input-output micro-strip connecting line; the micro-strip resonator, the first input-output micro-strip connecting line, the second input-output micro-strip connecting line and the input-output micro-strip line are all printed on a dielectric substrate; the substrate integrated waveguide resonator is composed of substrate integrated waveguide earthing holes in the dielectric substrate and copper with which the upper portion and the lower portion of the dielectric substrate are covered. The plane lossy filter is easy to machine and low in cost, is of a plane structure, free of cross resistive coupling and is easy to implement.

A voltage controlled oscillator includes a plurality of serially connected composite gain stages. A composite gain stage includes a transconductance stage and a transimpedance stage. The transconductance stage has first and second current paths from a first power supply voltage terminal to a second power supply voltage terminal. A first variable resistance is coupled between the first and second current paths. The transimpedance stage has a first inverter and a second inverter. The first inverter has an input terminal coupled to the output of the first current path and an output terminal. The second inverter has an input terminal coupled to the output of the second current path, and an output terminal. A second variable resistance is coupled between the input terminal and the output terminal of the first inverter, and a third variable resistance is coupled between the input terminal and the output terminal of the second inverter.

Process and apparatus for controlling a fuel cell. The process includes drawing a pulse from a fuel cell in one of a standby mode or no load condition. The pulse is one of a power, current, and voltage pulse. The apparatus includes a field effect transistor arranged to selectively couple a resistance to fuel cell to draw current from the fuel cell, and a timer defining a pulse, during which the field effect transistor couples the resistance to the fuel cell to draw current from the fuel cell. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

A power attenuator with at least one coupling port. The coupling port may be provided to monitor input power levels, out put power levels, or other operations of the power attenuator. One or more coupling ports may be located on the power attenuator input part to monitor input power levels and / or on the power attenuator output part to monitor output power levels. The coupling port(s) may be coupled to the main RF path by resistive coupling or reactive coupling. The coupling port(s) allow monitoring of the RF signal passing through the power attenuator to detect for incipient failures.

An electronic device including a transistor structure, and a process of forming the electronic device can include providing a workpiece including a substrate, a first layer, and a channel layer including a compound semiconductor material; and implanting a species into the workpiece such that the projected range extends at least into the channel and first layers, and the implant is performed into an area corresponding to at least a source region of the transistor structure. In an embodiment, the area corresponds to substantially all area occupied by the transistor structure. In another embodiment, the implant can form crystal defects within layers between the substrate and source, gate, and drain electrodes. The crystal defects may allow resistive coupling between the substrate and the channel structure within the transistor structure. The resistive coupling allows for better dynamic on-state resistance and potentially other electrical properties.

The invention discloses an automatic discharging circuit for outage of an energy storage element and a discharging method thereof. The automatic discharging circuit comprises alternating current outage detection units, a control signal generation unit and a discharging unit. The alternating current outage detection units are coupled to the two ends of the energy storage element through two diodes and resistors and used for judging whether alternating currents are disconnected. The control signal generation unit is connected with the alternating current outage detection units and the discharging unit and controls the discharging unit to discharge for the energy storage element when obtaining the signal that the alternating currents are disconnected from the alternating current outage detection units. According to the automatic discharging circuit of the energy storage element, the discharging safety of the energy storage element such as a capacitor X can be guaranteed, and power consumption waste caused by a discharging resistor of the energy storage element can be reduced and even avoided.

A switch assembly is provided for use on a vehicle having a source of supply voltage. The assembly comprises a switching network having an input terminal configured to be coupled to the supply voltage and an output terminal. The network comprises: (1) nine series-coupled resistors coupled between the input terminal and the output terminal, each resistor having a substantially predetermined resistance; and (2) nine switches each coupled between the input terminal and the output terminal and capable of being opened and closed by an operator of the vehicle. Eight of the switches are each coupled to a different junction of adjacent resistors, and the ninth switch is coupled between the output terminal and the ninth resistor. The switch assembly further comprises a control module coupled to the output terminal for determining which, if any, of the nine switches is closed.

An electronic ballast includes a rectifier circuit having a first output terminal for coupling with a lamp; a first inductor coupled with a first node; a resonant network coupled with the first node; a first capacitor coupled with the first node; a first resistor coupled with a second node; a second resistor coupled with a second output terminal of the rectifier circuit; a power switch having an output end, a ground end and a control end, wherein the output end is coupled with the first node and the ground end is coupled with the second resistor; a voltage divider for driving the power switch; and a second inductor coupled between the second node and the control end of the power switch.

Methods and structures for mitigating back gate effects in high voltage and low voltage semiconductor devices of a same integrated circuit fabricated in a silicon-on-insulator technology are described. According to one aspect, one or more resistive couplings are used to control surface potentials at regions of a substrate used for the SOI fabrication proximate the high voltage and low voltage semiconductor devices. According to another aspect, an N-type implant that is biased through a resistive coupling is used to provide a high potential differential with respect to a substrate potential.