38 results about "Tetrode" patented technology

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 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 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 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.