232 results about "Contact protection" patented technology

A protective housing removably attached to an electrical connector to prevent damage to contacts of the connector during, for example, shipping or handling of the electrical connector before the connector is connected with an electrical device such as a second electrical connector. The contact protector may include a pull portion of adhesive tape that abuts a housing of the electrical connector, creating an interference fit. The contact protector may include a handle integrated with the contact protector to facilitate removal of the contact protector from the electrical connector.

The invention relates to a contact protection device.

The device according to the invention has a sensor (5) for generating and detecting an electromagnetic field situated in the vicinity of a moving part (1) that should not be touched. The device according to the invention also has an evaluation unit (8) that is connected to the sensor (5) in order to evaluate sensor signals that can be generated by the sensor (5), wherein the evaluation unit (8) can generate an evaluation signal. Finally, a control unit (9) connected to the evaluation unit (8) is provided, which is designed and can be operated so as to control the movement of the part (1) as a function of the evaluation signal.

The present invention relates to a contact protection apparatus for covering a connection point of a medical fluid-conducting cassette for a medical fluid treatment, having at least one covering device for covering the connection point before the use of the cassette, and having at least one connection section for detachably connecting or holding the contact protection apparatus on the cassette. The present invention further relates to a medical fluid-conducting cassette having at least one contact protection apparatus according to the present invention.

Contact protection system for power busbars having planar contact protection modules which each comprise holding feet for engaging behind the power busbars and latching elements for mutually latching with adjacent contact protection module, wherein the contact protection modules comprise for each power busbar a terminal-receiving region for receiving connecting terminals which are provided for electrically contacting the respective power busbar.

The invention discloses a casing with a non-contact protection switch and a POS machine with the casing. The casing with the non-contact protection switch comprises a casing body and a non-contact protection switch device arranged in the casing body and used for preventing the casing body from being disassembled. The casing body comprises a casing bottom and a casing cover. According to the casing with the non-contact protection switch and the POS machine, the non-contact protection switch device is used for replacing a traditional physical and mechanical switch device, the protection switch is triggered through the skillful utilization of changes of magnetic field signals or light signals, the casing anti-disassembly and protection effect is achieved, meanwhile, the defects that a casing anti-disassembly device in the prior art is prone to causing false triggering and poor in stability and reliability are overcome, and unnecessary losses caused by false triggering are avoided. The casing with the non-contact protection switch can be widely applied to various casings with protection circuits and POS machines.

The invention discloses a protection circuit which is used for preventing reversed polarity of power and inrush voltage, comprising an overvoltage protection circuit; the invention is characterized by further comprising a protection circuit against reversed polarity; the overvoltage protection circuit is composed of a voltage dependent resistor and a transient voltage suppresser; one end of the voltage dependent resistor is connected with an input end 1 and a power anode, and the other end is connected with an input end 2 and a grounding terminal; a positive end of the transient voltage suppresser is connected with an output end 2 and the grounding terminal, and a negative end of the transient voltage suppresser is connected with an output end 1; the protection circuit against reversed polarity comprises a relay contact protection circuit and a sub-circuit; the relay contact protection circuit is serially connected between the power anode and the output end 1; one end of the sub-circuit is connected with the power anode, and the other end is connected with the output end 2. The invention realizes a reversed polarity protection circuit with low current controlling big current, low power consumption and high reliability, to ensure correct polarity connection of the input power and effectively protect precise components in inner circuit, thus ensuring the normal and reliable running of power in the electronic circuit.

A soaked circuit board transfer device comprises two supporting frames, a clamping mechanism, a transfer mechanism and a pushing mechanism. The supporting frame is located at one end of the conveying belt, a transverse plate is arranged at the end, close to the conveying belt, of the supporting frame, and supporting plates are arranged on the inner side of the supporting frame. The clamping mechanism is arranged at the other end of the supporting frame and comprises two arc-shaped rails, a linear mechanism is arranged between the two arc-shaped rails, and two clamping assemblies are arranged at the moving end of the linear mechanism and used for clamping a circuit board; the transfer mechanism comprises a bearing plate arranged on the rollers and two vertical moving mechanisms, the bearing plate is used for bearing the circuit board clamped by the clamping mechanism, and the vertical moving mechanisms are arranged on the outer side of the supporting frame and used for lifting or lowering the bearing plate; the pushing mechanism is arranged above the supporting frame and is used for pushing out the circuit board on the bearing plate; the circuit boards in the transfer trolley can be automatically transferred and conveyed to the conveying belt, the automation degree of the production line is improved, workers are prevented from making direct contact with the circuit boards soaked in water, and the health of the workers is protected.

A connector with a built-in memory IC which is mounted on a rotary development unit of a printer. The memory IC substrate is disposed within a contact protecting member and behind the rear side of an impact receiving member. A first electric contact is disposed on the front side of the impact receiving member and is connected to a second electric contact via a conductive member. The second electric contact spring contacts the memory IC substrate. The connector contains guide members to help stabilize the connection between the connector and the body side connector of the printer.

A dynamic switch contact protection circuit and technique to protect a channel switch within an electrical system by limiting transients when the switch is turned on or turned off. The protection circuit comprises switching between a high resistance path and a low resistance path. The high resistance path comprises a resistor. A bypass switch is connected in parallel to the resistor to affect the low resistance path. The protection circuit can connect or disconnect switch cards to the electrical system enabling the creation of a larger switching structure. Disconnected switch cards within a switching structure preserves system bandwidth by limiting capacitive loading. Electing which switch to close last or open first can prolong the length of usage of the switches.

The present invention relates to an electrical pin contact element (1a to 1g) for a high-current and/or high-voltage plug type connector in motor vehicle technology, having a free end (3) and having a base (2) which is spaced apart from the free end (3) for fixing the pin contact element (1a to 1g) in the plug type connector. The invention further relates to a connector element (100a to 100g) for a high-current and/or high-voltage plug type connector in motor vehicle technology. Finally, the invention relates to a method for producing an electrical pin contact element (1a to 1g) for a high-current and/or high-voltage plug type connector in motor vehicle technology, wherein there are formed a free end (3) and a base (2) of the pin contact element (1a to 1g), which base is spaced apart from the free end (3). In order to ensure contact protection which is as simple, robust and cost- effective as possible, it is provided according to the invention that an electrically insulating contact protection member (4) extends from the base (2) as far as the free end (3) so as to form an outer face (10') of a contact protection portion (9, 9'), that the connector element (100a to 100g) has at least one pin contact element (1a to 1g) according to the invention and that the pin contact element (la to lg) is provided externally with an electrically insulating contact protection member (4) from the base (2) as far as the free end (3).

Provided are: injection control regions of a second conductivity type provided on a charge transport region of a first conductivity type; main electrode regions of the first conductivity type provided on the injection control regions; insulated gate electrode structures going through the main electrode region and the injection control regions in the depth direction; an injection suppression region going through the main electrode regions and the injection control regions in the depth direction so as to form a pn junction in a path leading to the charge transport region, the injection suppression region including a semiconductor material with a narrower bandgap than a material of the charge transport region; and a contact protection region of the second conductivity type contacting the bottom surface of the injection suppression region.

A connector assembly (10), such as a high voltage electrical connector assembly, includes a first connector (100) having a first housing (102) and an intermediate housing (112) attached to the first housing (102). The intermediate housing (112) is moveable from a first position (120) to a second position (122). A flexible retaining arm is configured to hold the intermediate housing (112) in the first position (120). The connector assembly (10) further includes a second connector (200) having a second housing (202). The second housing (202) defines a release wedge (214) that engages and flexes the retaining arm, thereby releasing the intermediate housing (112) from engagement with the retaining arm and allowing the intermediate housing (112) to move from the first position (120) to the second position (122) as the first connector (100) is connected to the second connector (200). A terminal in the first housing (102) is enclosed within the intermediate housing (112) in the first position (120), and protrudes from an aperture in a surface of the intermediate housing (112) in the second position (122).

The invention relates to an on-load tap-changer of a transformer. The on-load tap-changer of the transformer comprises a plurality of tap-changer units and a switch control circuit, wherein each tap-changer unit comprises two relay switch contacts and corresponding contact protection circuits; one end of each of two switch contacts is connected with a corresponding transformer winding tap and the other end is connected with a power supply after being connected in parallel; two switch contact protection braches are a series circuit of an MOS tube and an auxiliary relay contact and the other series circuit of a diode and the other auxiliary relay contact respectively; two series circuits are connected with two ends of the corresponding switch contacts in parallel respectively; the plurality of tap-changer units are connected with one another in parallel to form a multi-winding branch tap-changer; and the switch control circuit controls all main switches, auxiliary switches and MOS tubes to act according to a certain time order, so that switching of transformer windings is achieved. Compared with an existing on-load tap-changer, the on-load tap-changer of the transformer provided by the invention has the advantages of being high in tapping speed, free of an inrush current in a tapping process, continuous in current, simple to operate, high in reliability, small in volume, light in weight, low in cost and the like.

An input power supply selection circuit includes a load, at least one input power supply to provide an operation power supply for the load, an input selection circuit to select the at least one input power supply as the operation power supply for the load, a sensing and control module to control the input selection circuit to switch the operation power supply for the load, and a load switch branch to control the load to be connected or disconnected. The sensing and control module controls the load switch branch to be connected or disconnected, and when the load switch branch is disconnected, the load and the at least one input power supply are not electrically coupled. Therefore, a contact protection design is simplified and a switching capacity requirement of the load switch branch is lowered.

An auxiliary electrical heating device for a motor vehicle includes a heating block that includes parallel layers of at least one heat emitting element and at least one heat generating element. The heating block is held in a housing having oppositely situated housing openings. In order to permit the electrical heating device to be operated safely even at high operating voltages, a contact protection of an insulating material covers the respective housing openings.

A diode contact protection combination switch and a specific implementation method. The combination switch comprises a primary contact protection circuit formed by a primary switch contact of a primary relay, diodes parallel connected at two ends of the primary switch contact, and a contact of a secondary relay. A current capacity of the secondary relay is 1/10 to 1/1000 of a current capacity of a contact of the primary relay. A drive current of the primary relay changes according to a certain rule, so as to shorten travel time of the relay. The implementation method is a control method of shortening travel time of a relay, in which a current flowing through a relay is controlled by a PWM wave output by a single chip microcomputer of a relay control circuit. The diode contact protection combination switch is an on/off switch in the case of current zero crossing, which can easily implement over-current and over-voltage protection and remote manipulation functions. By means of the relay control method, travel time when a relay is closed/opened can be greatly shortened on the premise that the service life of the relay is ensured.

The invention relates to the technical field of power equipment, and further discloses a vacuum arc-extinguishing chamber contact protection device that comprises an insulating cover, a main shieldingcover, a static contact and a moving contact; a suction pipe is fixedly connected to the inner wall of one side of the main shielding cover, a sealing piston is fixedly installed on the inner wall ofthe suction pipe, a plunger rod is arranged in the suction pipe and movably connected with the sealing piston in a sleeved mode, and an upper plunger and a lower plunger are fixedly connected to theupper end and the lower end of the plunger rod respectively. A heat collection box and the suction pipe are arranged on the two sides of the contact respectively; on one hand, part of metal steam is received in time through the side edge of the heat collection box; on the other hand, after the heat collection box absorbs heat, internal gas expands, and the lower plunger is pushed to move downwards, so that a similar injector composed of the upper plunger and the suction pipe can suck the metal steam near the contact in time; the content of the metal steam at the contact can be quickly reducedby matching with the heat collection box, the amount of the metal steam falling back to the surface of the contact is greatly reduced, and the use safety of the contact is protected.