16 results about "Reed relay" patented technology

The embodiment of the invention provides a transformer no-load closing angle control method, electronic equipment, a storage medium and a program product. The method comprises the following steps: periodically sampling three-phase voltages at a power supply side of a transformer, and determining a zero crossing moment when the phase voltage is changed from a negative value to a positive value according to respective sampling data for each phase in the three phases; based on the zero point moment of each phase, a preset switching-on angle and the total delay required from the switching-on instruction sending to the actual conduction of the main circuit, the target moments at which the switching-on instructions of the three phases should be sent out are calculated respectively, and corresponding switching-on trigger signals are output at the target moments of the phases respectively; and in response to the closing trigger signal of each phase, combined switch circuits arranged in the three-phase line are respectively driven, and each group of combined switch circuit comprises an MOS (Metal Oxide Semiconductor) tube and a dry reed relay which are connected in parallel, so that the MOS tube is conducted to establish an initial current path.

The application discloses a kind of armored double-layer shielded dry reed relay and its manufacturing method.The dry reed relay includes dry reed tube, inner shield tube, coil framework, coil, outer shield shell, coil lead, shield lead, side plate, sealing assembly and switch lead.The armored double-layer shielded structure of the above-mentioned dry reed relay can solve the problem of dry reed tube contact characteristic impedance matching uniformity by means of inner layer shielding, solve the problem of relay coil magnetic field leakage and low-frequency electromagnetic field shielding by means of outer layer shielding, and realize the problem of relay structure complete shielding and distributed parameter uniformity by means of coaxial structure.

The utility model relates to a reed switch normally-closed relay with a permanent magnet. The reed switch normally-closed relay comprises a reed switch, a framework, a load terminal, an enameled wire, a winding pin and a coil terminal, a permanent magnet is also included; the reed switch and the permanent magnet are both mounted on the framework; the permanent magnets are close to the reed switch, or the permanent magnets are arranged at the two ends or the periphery of the reed switch to provide a constant magnetic field; the reed switch is connected with one end of the load terminal and controls on-off of a load circuit. The other end of the load terminal is connected with an external load circuit; the enameled wire is wound on the coil framework, a magnetic field is generated when the enameled wire is electrified, the two ends of the enameled wire are connected with the winding pins, and the winding pins fix pins of the enameled wire; the winding pin is connected with the enameled wire and one end of the coil terminal; the other end of the coil terminal is connected with an external control circuit and generates a magnetic field when electrified. Compared with the prior art, the utility model has the advantages of effectively and stably realizing the long-term closing function of the reed switch relay reed, long service life, low energy consumption and the like.

The invention relates to a dry reed relay, and the dry reed relay comprises a winding window which is concavely formed in the middle of a coil rack, and a coil winding is wound in the winding window; coil retaining walls are arranged at the two opposite ends, in the axial direction of the coil winding, of the coil rack, and grooves are formed in the coil retaining walls; the magnetic shielding case comprises a first shielding case body and a second shielding case body; the first shielding cover body and the second shielding cover body are respectively provided with a guide structure, and the guide structures are clamped in the grooves, so that the first shielding cover body and the second shielding cover body are in clearance fit with the coil winding. In the process that the first shielding case body and the second shielding case body are assembled on the coil rack, the guide structure is in contact fit with the groove side wall of the groove so as to play a mounting guide role on the first shielding case body and the second shielding case body, so that the alignment degree of the first shielding case body and the second shielding case body is ensured, the relative dislocation after the first shielding case body and the second shielding case body are assembled is reduced, and the mounting quality of the coil rack is improved. The sealing degree after assembly is obviously improved, and the magnetic interference resistance and the magnetic efficiency of the dry reed relay are improved.

The application discloses a dry reed relay core, which comprises a dry reed switch, a coil frame and a lead frame, the dry reed switch comprises two tongue spring sheets and first leading-out pins, the coil frame comprises a middle circular tube-shaped winding part and two head parts connected with two ends of the winding part, the coil frame is provided with an installation through hole, the dry reed switch is installed in the installation through hole, one end of the two tongue spring sheets and the first leading-out pins respectively passes through the two ends of the installation through hole, and the lead frame comprises two tongue spring sheet second leading-out pins; each tongue spring sheet second leading-out pin comprises a first connecting part and a first pin, each head part is provided with a positioning part, the first connecting part of each tongue spring sheet second leading-out pin is positioned after being matched with the positioning part, the first connecting part is close to one end of the tongue spring sheet first leading-out pin, and one end of the tongue spring sheet first leading-out pin is fixedly connected with the first connecting part through soldering to form an electrical connection; the application can ensure the original sealing property of the glass tube of the dry reed switch and ensure the performance of the dry reed switch, and is convenient to assemble.

The invention provides a multi-channel switching device, and relates to the technical field of circuit testing, the multi-channel switching device comprises a printed board, a metal shielding box, a shielding connector structure, a signal converter structure and a dry reed relay structure, and the printed board is covered with a copper film; the shielding connector structure comprises a first shielding connector and a second shielding connector, one end of the first shielding connector is electrically connected with external equipment through a three-coaxial double-layer shielding cable, and one end of the second shielding connector is electrically connected with the test fixture through the three-coaxial double-layer shielding cable; one end of the signal converter structure is electrically connected with the other end of the first shielding connector through a coaxial single shielding cable; one end of the dry reed relay structure is electrically connected with the signal converter structure through a coaxial single-shielding cable, and the other end of the dry reed relay structure is electrically connected with the other end of the second shielding connector through a coaxial single-shielding cable. According to the multi-channel switching device, the voltage withstanding performance of the multi-channel switching device is remarkably improved, and the leakage current is reduced.

This utility model provides a reed relay assembly, including a relay body and an adapter. The relay body has a plurality of first pins and a plurality of abutment protrusions, each extending and protruding from the bottom surface of the relay body. The adapter is detachably assembled to the relay body. The adapter has a platform and a plurality of second pins. The platform has a first surface and a second surface facing each other, and the second pins extend and protrude from the second surface. The platform has a plurality of receiving notches exposed on the first surface, and the second pins expose a plurality of adapter holes on the first surface. The first pins are respectively inserted into the adapter holes, and the abutment protrusions are respectively inserted into the receiving notches, so that the bottom surface abuts against the first surface.

The application relates to a coil holder and a dry reed relay, the inside of the coil holder is used for embedding at least two dry reed switches, the coil holder is used for winding a coil winding, the coil holder comprises a wire holder main body, a first wire holder retaining wall and a second wire holder retaining wall, the first wire holder retaining wall and the second wire holder retaining wall are connected to two ends of the wire holder main body along the axial direction of the coil winding, and the first wire holder retaining wall and the second wire holder retaining wall are used for allowing the dry reed outgoing ends of the dry reed switches to extend to the outside of the coil holder along the axial direction of the coil winding; wherein the first wire holder retaining wall and the second wire holder retaining wall are concavely formed with isolation recesses, and the isolation recesses are used for being arranged between the adjacent two dry reed switches. The isolation recesses can weaken the conduction speed of temperature and reduce the heat storage capacity of the isolation recesses, so that the temperature superposition and heat accumulation effect of the middle part of the adjacent dry reed switches are reduced, and the temperature gradient around the dry reed switches is reduced.

The invention provides a square wave generating device based on a semiconductor switch, which comprises a power supply, a charging resistor, a coaxial cable, a semiconductor type coaxial switch, a load and a control module, and is characterized in that the power supply is connected with the coaxial cable through the charging resistor, the coaxial cable comprises a plurality of coaxial transmission lines, and the coaxial transmission lines are connected through coaxial reed relay switches; the coaxial cable is connected with a load through the semiconductor type coaxial switch, and the control module is electrically connected with the coaxial dry reed relay switch and the semiconductor type coaxial switch. According to the square wave generating device based on the semiconductor switch, the width of the square wave is controlled by controlling the length of the coaxial cable, so that the pulse width of the square wave is adjusted more simply, conveniently, efficiently and accurately; a semiconductor type coaxial switch is arranged, so that the output performance of square-wave pulses is improved, and the requirements of the electromagnetic compatibility field on high-speed and high-voltage signals are met; the structure of the semiconductor type coaxial switch is optimized, electromagnetic interference is effectively blocked, and the stability of the semiconductor type coaxial switch is improved.

The application provides a square wave generating device based on a semiconductor switch, which comprises a power supply, a charging resistor, a coaxial cable, a semiconductor coaxial switch, a load and a control module, the power supply is connected with the coaxial cable through the charging resistor, the coaxial cable comprises a plurality of coaxial transmission lines, the coaxial transmission lines are connected through coaxial reed relay switches, the coaxial cable is connected with the load through the semiconductor coaxial switch, and the control module is electrically connected with the coaxial reed relay switches and the semiconductor coaxial switch respectively. The square wave generating device based on the semiconductor switch is used for controlling the length of the coaxial cable to control the width of the square wave, so that the square wave pulse width adjustment is more convenient, efficient and accurate. The semiconductor coaxial switch is arranged to improve the output performance of the square wave pulse and meet the demand of the electromagnetic compatibility field for high-speed and high-voltage signals. The structure of the semiconductor coaxial switch is optimized, electromagnetic interference is effectively blocked, and the stability of the semiconductor coaxial switch is improved.

The present invention is a system that produces zero noise magnetic field, which consists of: a coil made of superconducting wire, a precision current source, a Normally Closed Reed (NC) Relay, a Normally Opened (NO) Reed Relay, a cooling mechanism to maintain the superconductor temperature below the critical temperature. The precision current source generates the necessary initial current to act as source for the superconducting coil. The NO reed relay connects the precision current source to the superconductive coil. When this current start to flow, the NC Relay is used to close a superconductive path of the superconductive coil on to itself. Once the system becomes stabilized, the NO reed relay is made open, cutting off the precision source while the Normally Closed relay is closed, thereby a steady value current keeps flowing inside the superconducting coil with zero resistance and zero magnetic noise.

The invention discloses a wave-absorbing material complex permeability testing device and method based on adjustable coil and temperature control integration, and the testing device comprises an impedance analyzer, a program control and calculation module, and a testing clamp. The test clamp comprises a sealable sample groove, a temperature control unit, a plurality of coil groups with the number of turns set according to a preset rule, and a reed relay controllable switch. In the calibration stage of the test method, traversing coil combinations are controlled through a program to complete open circuit, short circuit and standard load calibration, multiple temperature points are covered to form a reusable calibration file, and after a to-be-tested material is injected in the test stage, coil combinations are selected through program control to complete standard load calibration. The number of turns of the coil is calculated and optimized through a formula, parameters fall into a high-precision area of the impedance analyzer, series resistance and inductance of the coil are measured, a real part and an imaginary part of the relative permeability are calculated through the formula, and continuous testing of multiple temperature points can be achieved. The precision of the impedance analyzer can be dynamically matched, the temperature stabilization time is shortened, and the method is suitable for nondestructive testing of liquid / powder materials.

This utility model relates to testing technology for SiC devices, and discloses an AC HPD testing system for AC high-temperature testing of SiC module devices. The system includes a drive detection module, a power supply terminal, and a device under test (DUT). The power supply terminal provides voltage to the drive detection module and the DUT. The drive detection module drives and tests the DUT. The drive detection module includes an MCU microcontroller and an AC output control unit. The power supply terminal provides power to the MCU microcontroller and the AC output control unit. The MCU microcontroller controls the AC signal output by the AC output control unit. This utility model's testing system uses 220V / 50Hz AC mains power as input for the AC voltage output. A voltage regulator dynamically adjusts the voltage, and a high-voltage reed relay switches the bias voltage, allowing for simultaneous high-voltage AC and DC testing.

The utility model relates to a high-insulation and double-shielding reed switch relay. The reed pipe relay comprises a framework, a through cavity is horizontally arranged in the framework, a coil winding is wound on the outer side of the through cavity, and a reed pipe assembly is installed in the through cavity. A group of coil leading-out pins and a group of shielding leading-out pins are arranged on the framework, and the head end and the tail end of the coil winding are respectively connected with the coil leading-out pins; the reed switch assembly comprises a glass body covered with an insulating coating, a first switch element and a second switch element are arranged in the glass body, the two groups of switch elements are connected with switch leads, and the switch leads are connected with reed switch lead-out pins with tail ends suspended in the air; the outer side of the glass body is provided with a first screen and a second screen, the first screen and the second screen are respectively connected with the shielding lead-out pins on the framework, and an insulating sleeve is arranged between the first screen and the second screen. Compared with the prior art, the reed switch relay provided by the utility model has excellent insulating property and shielding effect.

We provide a reed relay assembly that can be connected to another device via a suitable adapter. [Solution] The reed relay assembly 100 includes a relay body 120 and an adapter 110. The relay body has a plurality of first pins 123 and a plurality of contact protrusions 122a, each extending and protruding from the bottom surface 122b of the relay body. The adapter is detachably assembled to the relay body. The adapter has a platform 111 and a plurality of second pins 112, the platform having opposing first surface S1 and second surface S2, the second pins extending and protruding from the second surface. The platform has a plurality of housing notches 111a exposed on the first surface, these second pins exposing a plurality of conversion holes 112d on the first surface, the first pins being inserted into corresponding conversion holes, and the contact protrusions being inserted into corresponding housing notches, with the bottom surface in contact with the first surface.

The invention discloses a counter-force reed, a relay contact system and a magnetic latching relay, the counter-force reed comprises a counter-force reed body, the counter-force reed body comprises a connecting part used for being connected with a rigid movable reed of the relay, and the connecting part extends to form a first elastic part and a second elastic part; the first elastic part is configured to be capable of forming abutting fit with a supporting structure at a preset position when the rigid movable contact spring is located at the breaking position so as to generate reset counter force on the rigid movable contact spring of the relay, and the second elastic part is configured to be connected with a pushing card of the relay. And when the rigid movable contact spring is located at the closing position, the push card continues to push the rigid movable contact spring to perform over-travel action, so that over-travel elastic contact force is generated on the rigid movable contact spring. According to the invention, a single part can provide a reset counter force in a reset state and provide an over-travel elastic contact force in a switching-on state at the same time, and meanwhile, the miniaturization design requirement of a product can be well met.