34results about How to "Reduce switch size" patented technology

The invention provides a pre-emphasis device and a low-voltage differential signal transmitter. The pre-emphasis device comprises a pre-emphasis pulse signal generating unit configured to generate a pre-emphasis pulse signal according to a serial data signal received from an external source; and a pre-emphasis current output unit including a bypass unit connected with an LVDS driver in parallel and including a bypass switch configured to act in response to the pre-emphasis pulse signal for bypassing an additional current applied to the LVDS driver during action, and an additional current unit including field effect transistors forming a channel, wherein the gates of the field effect transistors are connected with an external control signal and are configured to guide the additional current to the bypass unit and the LVDS driver connected with each other in parallel in response to the control signal. The pre-emphasis device can remarkably lower the power consumption of the pre-emphasis pulse signal generation circuit.

The invention discloses a watchdog division load switch. The watchdog division load switch is mainly composed of a breaker body, a fault detection controller and an external voltage transformer, wherein the breaker body, the fault detection controller and the external voltage transformer are electrically connected through an aviation socket and an outdoor sealing control cable. The aviation socket is fixedly installed at the bottom of the breaker body, and the breaker body comprises a casing, an upper cover, an inlet wire sleeve, an outlet wire sleeve, an insulating box installed in the casing, a vacuum arc-extinguishing chamber and an insulating operating mechanism. The insulating operating mechanism comprises an insulating pull rod, an operating spindle and a spring operating mechanism. Current transformers are respectively installed on two sides of an inlet wire conductive rod and an outlet wire conductive rod in the casing. The watchdog division load switch is simple in structure and reasonable in design, runs stably and is safe, reliable and suitable for division of a 10 kV overhead distributing line of a 10 kV system in neutral non-grounding, arc suppression coil grounding or low-resistance grounding and a user.

The invention relates to forward-backward voltage regulation no-excitation tapping switch used for a transformer. The switch comprises an insulator, an upper bracket, a lower bracket and an insulating shaft. Two layers of fixed contacts and moving contacts are arranged corresponding to every phase of the switch, and the moving contacts are installed on the insulating shaft and connected with two adjacent fixed contacts at the same time. The tapping switch is characterized in that four fixed contacts linked with a tap k of a main coil and three fixed contacts linked with a tap of a voltage regulation coil are arranged on one layer in every phase; three fixed contacts for outputting x and four fixed contacts linked with the tap of the voltage regulation coil are arranged on the other layer in every phase; and the arrangement directions of the tap linkage positions of the fixed contacts which are connected with the tap of the voltage regulation coil and arranged on the opposite layers in every phase are opposite. The switch has the advantages of simple structure, convenient manufacturing, reliable working performance, low manufacturing and use costs, suitability for configuring with transformers with various structures, convenience for the simplification of a transformer structure, and good forward-backward voltage regulation effect, thereby meeting the market demands.

The invention provides a line switch control system, method and device. The control system comprises monitoring equipment, a master control chip, a drive chip and a controller, wherein the monitoringequipment is used for collecting line information of a controlled circuit; the master control chip is connected with the monitoring equipment and is used for receiving the line information, collectedby the monitoring equipment, of the controlled circuit and generating a control signal according to the line information; the drive chip is connected with the master control chip and is used for the control and carrying out drive control on the controller according to the control signal; and the controller is connected with the drive chip and is used for carrying out switch control on the controlled circuit under the drive control of the drive chip. Through the line switch control system, method and device, the technical problems that an existing mechanical DC switch is short in life, overlarge in volume and relatively high in cost are solved, and the technical effects of effectively reducing the volume of the switch and reducing the cost are achieved.

The invention discloses a light-operated semiconductor switch. A shielding ground electrode, a chip semiconductor laser, a laser beam splitting coupler, a large-area semiconductor unit and a shieldinghigh-voltage electrode are sequentially arranged in the light-operated semiconductor switch from top to bottom. An electricity taking module or a boosting module is connected in a gap between the chip semiconductor laser and the laser beam splitting coupler; the side face of the light-operated semiconductor switch is wrapped with an insulating packaging shell, and the insulating packaging shell and the shielding electrode jointly form a light-operated semiconductor switch packaging shell. A power supply and trigger signal interface of the light-operated semiconductor switch extends out of thelight-operated semiconductor switch packaging shell. According to the invention, the light-operated semiconductor switch can be used for various occasions such as a high-power pulse power supply, a compact high-power pulse assembly, small-size high-energy pulse triggering and the like, and has the advantages of high power capacity, high reliability, long service life, small size and the like.

The invention discloses a pressing type travel switch resisting severe environment. The pressing type travel switch is composed of a shell, a drive body assembly, a base assembly and a pressing spring. The base assembly comprises a base body and at least one set of contact bars. The drive body assembly comprises a drive body, a button and at least one drum-like contact spring part. The number of the drum-like contact spring parts is the same as that of the sets of the contact bars. A locating boss on the base body and a locating blind hole in the drive body are located on the same axis. The upper end of the pressing spring is fixedly embedded into the locating blind hole. The lower end of the pressing spring is fixedly embedded outside the locating boss. The shell is a housing with a penetration hole formed in the center of the top. According to the travel switch, the drum-like bundling type contact springs with multiple elastic contacts are adopted, multi-point elastic surrounding uniform contact with the contact bars can be achieved, and the travel switch has the advantages of being high in impact resistance, high in vibration resistance, miniaturized, high in reliability, low in cost and the like.

The invention relates to a seven-gear off-circuit tap-changer achieving direct-reverse voltage regulating. The seven-gear off-circuit tap-changer comprises an insulator, an upper support and a lower support, and an insulating shaft is arranged between the upper support and the lower support; each phase corresponding to the tap-changer is provided with two layers of fixed contacts and moving contacts, one of the two fixed contact layers in each phase is a main coil tap layer and is provided with four fixed contacts connected with a main coil tap k and seven fixed contacts connected with a voltage regulating coil tap, the other layer is a voltage regulating outputting layer and is provided with four x outputting fixed contacts and seven fixed contacts connected with the voltage regulating coil tap, and the insulating shaft is provided with moving contacts each of which is simultaneously connected with two adjacent fixed contacts. The seven-gear off-circuit tap-changer is simple in structure, easy and convenient to manufacture, reliable in working performance, low in manufacturing and using cost, suitable for being configured with transformers with various structures and capable of facilitating simplification of the transformer structures, has more direct-reverse voltage regulating gears and a good direct-reverse voltage regulating effect and can meet the requirements of the transformers needing more gears to conduct direct-reverse voltage regulating.

The present invention provides a combined travel switch. The combined travel switch comprises: a housing, wherein the housing has a first touch space and a second touch space; a button partially arranged in the housing; a first contact bridge, wherein the first contact bridge is connected with the button and is arranged in the first touch space; a second contact bridge, wherein the second contactbridge is connected with the button and is arranged in the second touch space; a first contact member partially arranged in the first touch space; and a second contact member partially arranged in thesecond touch space. According to the combined travel switch provided by an embodiment of the present invention, by dividing two spaces in the switch, and by respectively placing the first contact bridge and the first contact member, the second contact bridge and the second contact member in the two spaces, switch setting inside the two spaces is realized, and the staff can only press the button to simultaneously realize the opening and closing control of the two circuits.

The invention discloses a microfluid inertia grounding switch capable of bidirectionally identifying. The switch comprises a substrate, a cover plate, metal liquid drops, a metal electrode and a microchannel, wherein the cover plate is arranged at an upper end of the substrate, the cover plate and the substrate are sealed, the micro channel is arranged on the substrate, the metal electrode is arranged on the cover plate, the micro channel comprises a rectangular liquid storage pool, a fan-shaped island, a diamond passage, a capillary valve, a direct-through passage and a bending passage, themetal liquid drops are arranged in the rectangular liquid storage pool, a contact at one end of the metal electrode is arranged in the micro channel, and a contact at the other end of the metal electrode is arranged outside a coincided region of the substrate and the cover plate. When an inertia force applied to the switch is larger than a threshold, the metal liquid drops can break through the capillary valve, the metal liquid drops can be completely recovered to the rectangular liquid storage pool after a backblow load and a service load are disappeared, and the switch is switched on by themetal liquid drops and the metal liquid drops cannot be recovered only under an effect of forward inertia force when a pellet rubs with ground. By the switch, an acceleration load can be bidirectionally identified, power is stably connected, and the switch has performance of working under a low-temperature environment.

The invention relates to a single-stage direct actuating low-voltage permanent magnet vacuum load switch which comprises a base, a permanent magnet operating mechanism, a low-voltage vacuum arc-extinguishing chamber and a direct actuating component. The permanent magnet operating mechanism is connected to the base. The low-voltage vacuum arc-extinguishing chamber is connected with the base and the permanent magnet operating mechanism through the direct actuating component. The single-stage direct actuating low-voltage permanent magnet vacuum load switch has the advantages that the switch is elongated in overall structure, miniaturization of low-voltage switches is realized, transmission components are simple, reliable and smaller in size, and the switch is suitable for integrated design of equipment in narrow space and complete equipment, especially suitable for being used as a low-voltage load control switch inside a transformer.

The invention relates to a tappet for actuating a switching element, especially for using in a position switch or a safety switch, said tappet comprising at least one abutment for pre-tensioning by means of at least one elastic element. Until now, the insertion of such a tappet inside a switch had lead to spatial requirements inside the switch. The inventive tappet comprises an inner region for at least partially receiving the elastic element, freeing the space around the tappet for other components. Furthermore, the invention also provides a simpler assembly and a way of advantageously protecting the elastic element.

The invention discloses a full reset switch structure, comprising an operation panel (1), a functional part (2) for realizing electrical connection of electrical equipment, a converter (3) for controlling the action of the functional part (2), and a balance device (4), the balancer (4) is installed between the operation panel (1) and the function part (2), the converter (3) is installed in the middle of the back of the operation panel (1), and the converter ( 3) It is connected with the functional part (2) through the reset member (5). In the present invention, the converter is installed on the back of the operation panel, which effectively reduces the volume of the switch, and at the same time separates the functional parts, which is equivalent to increasing the usable space of the functional parts, which is convenient for those skilled in the art to optimize the design of the functional parts. The invention creates an internal structure It is simpler, reduces the number of required components, shortens the product assembly process, and improves the production efficiency of the manufacturer.

The invention relates to a switching device and a feedback resistance circuit. The device is characterized in that a first transmission end of a first transistor is used for connecting an input end of an operational amplifier; the second transmission end of the first transistor is connected with the output end of the operational amplifier through a feedback resistor; the control end of the first transistor is used for being connected with a first gate control circuit, responding to a first gate control signal output by the first gate control circuit and entering a gate state or a turn-off state; the output end of the substrate voltage selection module is connected with the third transmission end of the first transistor, one input end of the substrate voltage selection module is used for being connected with the input end of the operational amplifier, and the control end of the substrate voltage selection module is used for being connected with the first gating control circuit; and the substrate voltage selection module is used for transmitting the input voltage of the operational amplifier to the substrate of the first transistor under the condition that the first transistor is in the gating state. By adopting the device, the bandwidth of the programmable gain amplifier can be improved.

The invention relates to a linked linear voltage regulation non-excitation tap switch for a transformer, which is characterized in that: each phase corresponding to the switch is provided with two layers of static contacts; one layer of the two layers of static contacts of each phase is provided with static contacts of an upper voltage regulation tap of a linked voltage regulation coil and static contacts of a midpoint tap, and the two kinds of static contacts of the taps are distributed mutually at intervals; the other layer is provided with static contacts of a lower voltage regulation tap of the linked voltage regulation coil and static contacts of an output tap, and the two kinds of static contacts of the taps are distributed mutually at intervals; two adjacent static contacts form a tap position, and the tap positions are distributed along the circumferential direction in reduced progressively sequence from large to small; and only one maximum tap position in one layer of the two layers of static contacts set in each phase corresponds to a maximum tap position in the other layer. The tap switch is simple and compact in structure and reasonable in setting, achieves multi-tap linear voltage regulation by using less voltage regulation coil taps, is convenient to operate, has no short connected tap position and high working reliability, and is small in volume to greatly simplify the transformer structure and reduce manufacturing cost and use cost.