37 results about "Tetrode" patented technology

Vacuum microelectronic devices with carbon nanotube films, layers, ribbons and fabrics are provided. The present invention discloses microelectronic vacuum devices including triode structures that include three-terminals (an emitter, a grid and an anode), and also higher-order devices such as tetrodes and pentodes, all of which use carbon nanotubes to form various components of the devices. In certain embodiments, patterned portions of nanotube fabric may be used as grid/gate components, conductive traces, etc. Nanotube fabrics may be suspended or conformally disposed. In certain embodiments, methods for stiffening a nanotube fabric layer are used. Various methods for applying, selectively removing (e.g. etching), suspending, and stiffening vertically- and horizontally-disposed nanotube fabrics are disclosed, as are CMOS-compatible fabrication methods. In certain embodiments, nanotube fabric triodes provide high-speed, small-scale, low-power devices that can be employed in radiation-intensive applications.

A low flicker noise active mixer comprises a trans-conductance section, a switching quad, and a load section. The trans-conductance section converts a voltage signal pair into a first current signal pair. The switching quad converts the first current signal pair into a second signal pair in a manner controlled by a LO (local oscillator) signal pair. The load section provides a loading to the second current signal pair using a pair of commutative active loads to convert the second current signal pair into an output voltage signal pair.

Disclosed is a high voltage inverter for converting DC power to AC power with one or more AC output phases. The inverter has for each AC output phase an AC input phase circuit comprising first and second cold cathode field emission controllable electron tubes of triode, tetrode or pentode structure. Each electron tube has a first input node for connection to a high voltage DC potential in excess of 20 KV and a second input node for connection to ground. First electron tube is serially connected between a first end of a primary winding and ground, and second electron tube is serially connected between a second end of the primary winding and ground. Control circuitry controls the electron tubes so that the first and second electron tubes alternatively conduct so as to alternately bring the first and then second end of the primary winding approximately to the potential of ground.

A solid state vacuum device (SSVD) and method for making the same. In one embodiment, the SSVD forms a triode device comprising a substrate having a cavity formed therein. The SSVD further comprises an anode positioned in the cavity of the substrate, a cathode suspended over the cavity of the substrate, and a grid positioned between the cathode and anode. In addition, the SSVD comprises a seal for creating a vacuum environment in the area surrounding the grid, cathode, and anode. Upon applying heat to the cathode, electrons are released from the cathode, passed through the grid, and received by the anode. In response to receiving the electrons, the anode produces a current. The current produced by the anode is controlled by a voltage applied to the grid. Other embodiments of the present invention provide diode, tetrode, pentode, and other higher order device configurations.

A castellated-gate MOSFET tetrode device capable of fully depleted operation is disclosed. The device includes a semiconductor substrate region having an upper portion with a top surface and a lower portion with a bottom surface. A source region and a drain region are formed in the semiconductor substrate region, with adjoined primary and secondary channel-forming regions also disposed therein between the source and drain regions, thereby forming an integrated cascade structure. Trench isolation insulator islands, having upper and lower surfaces, surround the source and drain regions as well as the channel-forming regions. Both the primary and secondary channel-forming regions include pluralities of thin, spaced, vertically-orientated semiconductor channel elements that span longitudinally along the device between the source and drain regions. First and second gate structures are provided in the form of pluralities of spaced, castellated first and second gate elements interposed between the primary and secondary channel elements, respectively, with first and second top gate members interconnecting the first and second gate elements at their upper vertical ends to cover the primary and secondary channel elements. The adjoined primary and secondary channel elements are super-self-aligned from the first and second gate elements to the source and drain regions. Finally, first and second dielectric layers separate the primary and secondary channel elements from their respective gate structures.

The invention provides a method for analyzing chemical components of fatty acid in cortex periplocae radicis. The method includes the following steps: (a) the fatty acid is extracted from the cortex periplocae radicis; (b) methyl ester is performed for the fatty acid; (c) the methyl esterifed fatty acid is detected by a GC-MS combination method, wherein the chromatographic condition for GC-MS combination is as follows: the chromatographic column is a quartz capillary chromatographic column; the carrier gas is a high-purity helium gas; the temperature of an introduction port is 230-270 DEG C; the split ratio is 8:1-12:1; and the flow speed is 0.8-1.2mL.min. The mass spectrum condition is as follows: the ion source is an EI ion source; the temperature of a tetrode is 120-170 DEG C; the temperature of a transmission line is 270-310 DEG C; the voltage of a multiplier tube is 1800-2200V; and the temperature of a GC-MS interface is 210-250 DEG C. Being tested by a methodology, the method is accurate and reliable and can be used for analyzing the chemical components of fatty acid in cortex peripolcae radicis.

A solid-state vacuum device (SSVD) and method for making the same. In one embodiment, the SSVD forms a triode device comprising a substrate having a cavity formed therein. The SSVD further comprises cathode positioned near the opening of the cavity, wherein the cathode spans over the cavity in the form of a bridge that creates an air gap between the cathode and substrate. In addition, the SSVD further comprises an anode and a grid that is positioned between the anode and cathode. Upon applying heat to the cathode, electrons are released from the cathode, passed through the grid, and received by the anode. In response to receiving the electrons, the anode produces a current. The current received by the anode is controlled by a voltage applied to the grid. Other embodiments of the present invention provide diode, tetrode, pentode, and other higher order device configurations.

The invention provides a reusable light optical fiber electrode as well as a making method and an embedding method thereof. A laser diode is connected to one end of an optical fiber; a neural signal connector is welded on a PCB; the neural signal connector is electrically connected to the PCB; the PCB is welded on a micro thruster; an iron sheet is perpendicularly fixed to the micro thruster; a capillary guiding tube is stuck on the iron sheet; a tetrode is inserted into the capillary guiding tube; one end of the tetrode protrudes out of the capillary guiding tube and the other end of the tetrode is inserted into a hole of the PCB; a laser diode-optical fiber complex and tetrode electrodes are cured by virtue of glue; one end of a connecting rod is fixed to the micro thruster; and the other end of the connecting rod is fixed to a laser diode base. The laser diode is drawn and controlled by virtue of an extra-fine electric wire, without inserting or removing an optical fiber or an optical fiber sleeve, so that stable multi-channel recording and synchronous multi-modal photic stimulation control can be conducted on two or more encephalic regions of a freely moving mouse easily. The reusable light optical fiber electrode is small in size, light in weight and reusable, so that using cost can be greatly reduced.

A Gilbert cell mixer design is disclosed. Instead of using a differential transconductance stage as typically done, the design employs a differential transimpedance amplifier input stage. By utilizing a transimpedance input stage to the Gilbert mixer, feedback is used to obtain higher linearity without sacrificing noise performance. The transimpedance input stage supplies a current signal to the cascode connected Gilbert switching quad, so the transimpedance amplifier output is taken from the collector of the transimpedance amplifier output transistor, instead of the emitter as normally done with transimpedance amplifiers.

The invention relates to continuous microwave curing equipment for vacuum pressure paint impregnation electrical equipment, which comprises a conveying rail, bases, microwave curing devices, an online detection device and a PLC (Programmable Logic Controller) control device, wherein the bases can operate along the rail; each microwave curing device is provided with a microwave triode or tetrode; a plurality of bases capable of operating along the rail can be accommodated in each microwave curing device and move in the microwave curing device; the electrical equipment to be subjected to vacuum pressure paint impregnation processing is accommodated in the bases; and the microwave curing devices are connected with vacuumizing equipment. After the curing equipment disclosed by the invention is adopted to carry out curing on the electrical equipment to be subjected to vacuum pressure paint impregnation processing, the curing time can be effectively shortened; and moreover, the continuous microwave curing equipment is beneficial to implementing the automatic control of the curing process and is particularly suitable for the automatic operation.

The invention discloses an electroluminescent tetrode integrating luminescence, switch and color control, and a control method thereof. The electroluminescent tetrode comprises an electrode layer, a luminescent layer and a modulation layer which are arranged in sequence; the luminescent layer comprises at least two luminescent sub-layers; the electrode layer comprises at least two electrodes, and every two adjacent electrodes are arranged at intervals; and the electrodes and the luminescent sub-layers are arranged in a one-to-one correspondence mode, and the modulation layer is used for controlling all the luminescent sub-layers. The luminescent layer is divided into at least two luminescent sub-layers, the electrode layer is divided into at least two electrodes which are arranged at intervals, and the electrodes and the luminescent sub-layers are in one-to-one correspondence, so that the luminescent sub-layers can be respectively controlled through the modulation layer, and the luminescent sub-layers can form a pixel, namely, a control signal is given to the modulation layer; therefore, each luminescent sub-layer can be controlled in an integrated manner.

The invention relates to the technical field of automatic tuning of impedance of wide-band high-power radio-frequency amplifiers, in particular to an automatic impedance-tuning system capable of realizing real-time monitoring and automatic compensation, which can be applied to wide-band high-power source to realize automatic compensation by monitoring the detuning angle of the output impedance of the front amplifier to control and adjust parameters of the matching network so as to overcome the front impedance detuning of tetrodes. The automatic tuning system mainly comprises a control unit and a high-frequency power source which are connected through the impedance and resonance matching network. The automatic impedance-tuning system mainly refers to the automatic-tracking impedance tuning technique; to be specific, according to the technique, the parameters of the matching network can be controlled and adjusted by monitoring the detuning angle of the output impedance of the front amplifier in real time, so that impedance change, caused in the wide band, of the grid capacitor Ckg1 of the tetrode can be compensated automatically, the input impedance of the grid of the tetrode is kept in the resonance matching state within the working range of the whole wide band; therefore, work efficiency and integral performance of the high-power tetrode amplifier can be improved greatly.

The invention discloses an RGB-WW synchronous intelligent lamp, and relates to the technical field of decorative lighting. A plurality of lamp strings are connected to a main line in parallel, each lamp string is formed by sequentially connecting a plurality of RGB-WW-LED tetrodes in series through wires, and the two ends of the main line are respectively provided with a product male joint and a product female joint; an intelligent power source is formed by sequentially connecting a power plug, a controller and a controller female connector through wires, the power plug is an IP44 plug, the ends of the lamp strings are connected with the controller female connector of the intelligent power source through the product male connector, and the controller is connected to 24-240 V voltage through the power plug. The intelligent lamp string is convenient to operate, facilitates lamp string control, is outstanding in functional effect, achieves the intelligent lamp string synchronous effect through intelligent power supply control, meanwhile, can conduct functional switching of the synchronous effect on the intelligent lamp strings through a remote controller, flexibly adapts to change ofrequirements, plays a good decorative role, and is wide in application prospect.

The invention discloses an RGB-WW synchronous intelligent melamine lamp, and relates to the technical field of decorative lighting. Melamine lamp strings are connected to a main line in parallel, eachmelamine lamp string is formed by sequentially connecting a plurality of RGB-WW tetrode bulbs in series, the wire positive electrode of each RGB-WW tetrode bulb is connected with the wire negative electrode of the adjacent RGB-WW tetrode bulb, the RGB-WW tetrode bulbs are sequentially connected in series to form a string, and a voltage drop resistor is connected between the wire positive electrode and the wire negative electrode; and the intelligent power supply is formed by sequentially connecting an IP44 plug, a controller and a power line female terminal through an electric wire, the end part of the melamine lamp string is connected with the controller through the power line female terminal, and the controller is connected to 24-240V voltage through the IP44 plug. Through the control of the intelligent power supply, the intelligent melamine lamp synchronization effect is achieved, the function switching of the remote controller for the intelligent melamine lamp synchronization effect is realized, and the application prospect is wide.

The invention discloses an RGB-WW point control intelligent melamine lamp, and relates to the technical field of decorative lighting. The main line positive electrode and the main line negative electrode are connected with a plurality of melamine lamp strings in parallel, each melamine lamp string is formed by sequentially connecting a plurality of RGB-WW lamps in series, the exposed end parts ofthe RGB-WW lamp bottoms form an RGB-WW positive electrode and an RGB-WW negative electrode respectively, each RGB-WW positive electrode is connected with the RGB-WW negative electrode of the adjacentRGB-WW lamp through a wire, the plurality of RGB-WW lamps are connected in series in sequence to form a melamine lamp string; and a four-core chip is arranged in a tetrode of the RGB-WW lamp, and an address written through an encoder is arranged in the four-core chip. According to the invention, the color of the product is input into the MCU through the computer program module, and the color of the product is randomly programmed and modified, so that RGB-WW is controlled to form single-color, double-color and multi-color control functions and the like, the functions are diversified and comprehensive, the operation is simple and convenient, and the application prospect is wide.

The invention discloses a metal P-type semiconductor junction tetrode thermoelectric converting, refrigerating and heating device, which is formed by being sequentially and mutually in contact with two metal material plates and two P-type semiconductor plates, wherein the right surface of a metal material plate 1 is in contact with the left surface of a P-type semiconductor plate 2, the right surface of the P-type semiconductor plate 2 is in contact with the left surface of the metal material plate 3, and the right surface of the metal material plate 3 is in contact with the left surface of the P-type semiconductor plate 4. A load is connected between the metal material plate 1 and the metal material plate 3 or between the P-type semiconductor plate 2 and the P-type semiconductor plate 4 so that the thermoelectric conversion can be realized, and a direct current power supply is connected between the metal material plate 1 and the metal material plate 3 or between the P-type semiconductor plate 2 and the P-type semiconductor plate 4 so that the refrigerating and heating operations can be realized.

The invention discloses an amplifier which applies a negative feedback on the plate grid of an electronic tube; after a signal is amplified by a quintode or a beam power tetrode, a part is taken out and then a negative feedback signal is applied to the plate grid of the quintode; the quintode of the amplifier provides a negative feedback AC signal for the plate grid by a coupling capacitance/a Zener diode/a negative feedback servo circuit/a negative feedback winding/a connecting plate grid, a DC voltage for the plate grid is provided by a resistance/the Zener diode/the negative feedback servo circuit/a choke/the negative feedback winding/a connecting plate grid. The scheme can also be suitable for the beam power tetrode. The amplifier of the invention can be used for providing an AC negative feedback signal with a fixed amount for the plate grid, improving the linearity of the quintode or the beam power tetrode and being capable of adjusting the negative feedback amount applied on the plate grid no matter applying the quintode at a voltage amplifying stage or a power amplifying stage; the plate grid and an anode can respectively work at the rated operational voltages of each own when the DC voltage of the plate grid is lower than the anode.

An electrode system for an ion source has a source electrode that defines a source aperture in an ion source chamber, and is coupled to a source power supply. A first ground electrode defines a first ground aperture that is electrically coupled to an electrical ground potential and extracts ions from the ion source. A suppression electrode is positioned downstream of the first ground electrode and defines a suppression aperture that is electrically coupled to a suppression power supply. A second ground electrode is positioned downstream of the suppression electrode and defines a second ground aperture. The first and second ground electrodes are fixedly coupled to one another and are electrically coupled to the electrical ground potential.