Abstract: An electrical connector includes a first connector including a first interlock terminal, a first connecting terminal, and a first interlock connector for holding the first interlock terminal, and a second connector including a second interlock terminal electrically connected to the first interlock terminal, and a second connecting terminal engaged with the first connecting terminal. The second connector further includes a second interlock connector engaged with the first interlock connector and holding the second interlock terminal, a fit detecting portion movable in conjunction with the second interlock connector for detecting a fit state of the first connector and the second connector, and a rod for connecting the second interlock connector to the fit detecting portion. The second interlock connector includes an interlock female connector including a U-shaped portion substantially U-shaped in a side cross sectional view.

Abstract: Presence of a module, such as a DIMM, in an information handling system is detected by selectively altering the function of socket pins at opposing ends of the module socket for use in detection of module pins in contact with the socket pins. For example, ground pins at opposing ends of the socket are selectively interfaced with a detection circuit that applies a voltage through a pull up resistor to generate a logic high if the ground pin is not connected to a module ground pin and a logic low if the ground pin is connected to a module ground pin. Presence detection at opposing ends of the module identifies partially inserted modules where one end indicates a ground pin interface while the opposing end does not.

Abstract: A multimeter for testing a plurality of electrical parameters comprises a case having a plurality of test lead jacks. Each of the test lead jacks includes a unitary conductive socket. Preferably, the sockets are made of metal such as brass. A circuit board located in the case has jack conductors in electrical communication with each of the sockets. A jack detection arrangement is adapted to automatically determine whether a plug is inserted into a respective one of the sockets based on a change in electrical characteristics. For example, the jack detection arrangement may include a photonic emitter and a photonic detector situated such that a beam path therebetween is interrupted by insertion of a plug. The case may further have a rotary selector knob for selecting a multimeter function.

Abstract: A circuit board assembly includes a circuit board having opposing first and second surfaces each extending between at least one edge surface that intersects the first and second surfaces. A light emitting element is mounted directly over the edge surface of the circuit board.

Abstract: A connector includes first and second plug-and-socket connector parts and a connection element. The first connector part has a latch operable to connect the connector parts together. The connection element is connected and is displaceable with respect to the first connector part between first and second positions. The connection element has a pair of locking tabs operable with the latch such that the connection element is fixed in the first position until the latch connects the connector parts together and such that the connection element is movable from the first position to the second position when the latch connects the connector parts together. While in the first position the locking tabs release the latch connection such that the connector parts are separable from one another. While in the second position the locking tabs secure the latch connection such that the connector parts are securable connected to one another.

Abstract: A high voltage and interlock loop assembly has first and second high voltage connector housings complementarily constructed for releasable engagement with each other and for having a high voltage circuit running therethrough. First and second connectors for an interlock loop circuit are complementarily constructed for releasable engagement with each other with one of the interlock loop connectors being mounted on one of the high voltage connector housings. The first and second interlock loop connectors have complementarily abutment shoulders with one abutment shoulder being on a flexible tab. The flexible tab is movable to misalign its abutment shoulder from the other abutment shoulder when the high voltage connector housings are properly engaged together to allow full engagement of the first and second interlock loop connectors.

Abstract: An elbow terminator has a socket in which an electrical probe is disposed. The terminator is insertable onto an electrical bushing such that a tongue of the bushing is received in the socket of the terminator, and the probe of the terminator is electrically coupled to a contact sleeve disposed within the tongue. A latching mechanism produces positive latching between the tongue and socket when the tongue has been inserted to a predescribed depth within the socket. In order to enable an operator to visually observe that the tongue has been inserted to the prescribed depth, the bushing carries a color band which becomes completely disposed (invisible) in the socket when positive latching occurs. Alternatively, the bushing can be provided with gauge tabs which become aligned with a witness line formed on the terminator when positive latching occurs.

Abstract: A modified Series A universal serial bus (USB) receptacle connector is equipped with the functionality to allow the electronic system in which it resides to be configured either as a host device or a peripheral device. The modified USB Series A receptacle connector, according to one embodiment of the invention may include a mechanism such as an additional pin or a mechanical switch to detect the presence of a standard USB Series A plug being inserted into it. Upon detection of a plug, an algorithm may allow the system to determine whether it is to act as a host device or a peripheral device and to determine which device supplies power.

Abstract: An arrangement for monitoring patch fields at distribution points in data networks comprises patch cables which can be plugged by means of plugs into connectors in the patch fields. Each of the two plugs of each patch cable is provided with a transponder. A device is arranged before or in the proximity of one of the patch fields with its connectors. The device is equipped with readers and reader coils. The readers are in data communication with an evaluation unit. The device comprises a plurality of reader coils, the number of which exceeds the number of connectors in the patch field. The reader coils can be independently driven.

Abstract: A guide module system detects when electrical components are mated with one another. The guide module system includes a guide pin and a guide module. The guide pin is configured to be mounted to a first electrical component. At least a portion of the guide pin includes a conductive material. The guide module is configured to be mounted to a second electrical component. The guide module includes a channel that is positioned to receive the guide pin when the first electrical component is mated with the second electrical component. The guide module includes first and second electrical contacts within the channel. The first and second electrical contacts and the conductive material in the guide pin form a closed circuit when the guide pin is inserted into the guide receptacle.

Abstract: A connector is provided with a plurality of terminal fittings (40), a shorting terminal (10) for shorting corresponding terminal fittings (40), and a housing (50) for accommodating the terminal fittings (40) and the shorting terminal (10). The shorting terminal (10) includes a contact piece (17) formed by bending and pushed at the time of insertion into the housing (50) and a support (21) formed by bending and held in contact with the contact piece (17) from a side opposite to a push-in direction into the housing (50). When a jig for pushing the shorting terminal (10) is pressed against a pushable surface (19) of the contact piece (17), the contact piece (17) can be prevented from being inclined in the push-in direction to be deformed by being supported by the support (21).

Abstract: A plug-in connection has a housing having a pair of spaced sides between which can fit a plug or socket. Each side is formed with an aperture with the apertures aligned transversely with each other. The housing further having a latch element and a locking element. A pair of spaced side walls are fixed to and project outward from one of the sides of the housing. The aperture of the one side of the housing is between the side walls, and the aperture on the other side of the housing is at least as large as the aperture of the one side. A cover bridges the side walls and forms therewith a recess adapted to receive the locking element movable therein. The cover and side walls at least almost completely enclose the latch element and locking element and are almost completely enclosed in an end region of the recess.

Abstract: A connector includes female and male housings (10, 40) that are connectable along a connecting direction (CD). A connection detector (30) is mounted on the female housing (10) for movement along the connecting direction (CD) between standby and detection positions. The connection detector (30) does not contact receiving portions (48) of the male housing (40) when the connection detector (30) is at the standby position. However, pressing portions (32) of the connection detector (30) press the receiving portions (48) when the connection detector (CD) is at the detection position to prevent relative movements of the connection detector (30) and the male connector housing (40). Thus, connection resistance between the receiving portions (48) and the pressing portions (32) is not produced when the connection detector (30) is at the standby position.

Abstract: A power supply method to a memory card that has been inserted into an apparatus that can be inserted with a plurality of types of memory cards, includes: detecting that one type of the memory card out of a plurality of the types of memory cards has been inserted into a card slot; judging whether or not there has been detected an insertion of a different type of memory card from the type of the memory card that has already been detected, within passing of a predetermined time from when the insertion of the one type of the memory card has been detected; specifying the type of the memory card that has been inserted, based on a result of the judgment; and supplying electric power to the specified type of memory card.

Abstract: A power plug, power outlet, power supply device and power supply system for preventing electricity theft with relatively simple configuration are provided. A power outlet unit supplies power to a power plug unit to establish communication over a power line between a PLC block of the power outlet unit and a PLC block of the power plug unit. Upon transmission of an ID number from the power plug unit, the transmitted ID number is compared with an ID number stored in a memory. If the ID number matches the ID number in the memory, power is continuously supplied to the power plug unit. If the ID number does not match, the power supply is shut down to prevent electricity theft.

Abstract: A connection system for laying and connecting core pairs of a multi-pair data cable to connection pairs of a data jack with an accommodating device for accommodating and sorting, without crossing over, the core pairs of the data cable.

Abstract: A board-to-board connector adapted to be mounted to a printed circuit board includes a housing and at least one row of terminals. The housing defines at least one longwise row of cavities and at least one checking window extending longwise adjacent the row of cavities and penetrating the housing. The terminals are received in the corresponding cavities. Each of the terminals has a soldering portion adapted for being soldered to the printed circuit board. The soldering portions stretch into the corresponding checking window so as to check the solderability thereof with the printed circuit board in order to ensure that the terminals are soldered to the printed circuit board firmly.

Abstract: A connector assembly or interface cassette (300), comprising a housing (304) comprising a jack interface (314), said jack interface having a receptacle jack (370) therein, said receptacle jack being configured to receive a plug; and a sensor bezel (20) removably attachable to said jack interface, said sensor bezel comprising a cavity extending therethrough to allow passage of a plug when inserted into said receptacle jack, said sensor bezel including a circuit board proximate said jack cavity, and at least one sensor contact (340) aligned with, and configured to engage, a sensor probe associated with a plug insertable into said receptacle jack, characterised in that the bezel includes connection means (22) accessible from the front of the bezel whereby the bezel can be electrically connected to a sensing component independently of any components inside the said housing.

Abstract: A detector (60) is assembled with a lock arm (12) of a housing (10) to be movable between a standby position and a detection position. The detector (60) can move from the standby position to the detection position when the housing (10) is connected properly with a mating housing (90), and a movement thereof to the detection position is prevented when the housing (10) is connected partly with the mating housing (90). The detector (60) is formed with a window (69). A detecting main body (64) of the detector (60) is seen through the window (69) at the standby position, whereas an upper plate (24) of the lock arm (12) is seen therethrough at the detection position. The detector (60) is in a first color and the housing is in a second color different from the first color.

Abstract: Separable connector assemblies include one or more pairs of connectors that engage and disengage one another in electrical connection and disconnection operations, respectively. An operator can disengage the connectors by pushing the connectors together and then pulling the connectors apart. Pushing the connectors together shears interface adhesion between the connectors, making it easier for the operator to pull the connectors apart. An indicator integral or coupled to one of the connectors can indicate whether the first and second connectors are in the pushed-in-position. A window in the other connector includes an opening, channel, and/or translucent or semi-translucent material through which the indicator may be seen. The window and/or one or more vents in a tubular member of one of the connectors can include a channel that provides an air path for ingress of air between the connectors, to thereby remove or reduce a vacuum or partial vacuum between the connectors.

Abstract: An electrically safe receptacle that in it's normal quiescent state will not have electrical current flow. Said electrically safe receptacle will be equipped with normally-open switches on one or both female conductors that are controlled by a strategically placed sensor to detect the insertion of a male plug. Detection of the male plug insertion will signal the normally open switches to close the circuit pathway and allow for the flow of electrical current to the device permitting normal operation. Insertion of a foreign conductive device such as a hair pin, knife blade, or metallic tool in one or both female conductors will fail to activate the sensor and thereby reduce or eliminate the possibility of accidental electrocution by preventing the flow of electrical current.

Abstract: A connector has a terminal insertion opening (23) and a restriction (25) projects in at an inner corner of the terminal insertion opening (23). A terminal fitting (30) has a rectangular tube (31) and a positioning projection (43) projects out from the rectangular tube (30). The positioning projection (43) is offset laterally from the restriction (25) when the terminal fitting (30) is oriented properly so that the tube (30) can be inserted into the terminal insertion opening (20). However, the positioning projection (43) is offset rotationally from the restriction (25) when the terminal fitting (30) is oriented improperly so that a corner (41) of the rectangular tube (31) contacts the restriction (25). The corner (41) of the rectangular tube (31) has a higher strength than a cantilevered projection from the rectangular tube (31). Thus, the corner (41) will not be deformed by contact with the restriction (25).

Abstract: A method and apparatus are provided for monitoring and reporting cable connectivity such as patch panel port-level connectivity on a real-time basis. For patch panel systems, the approach is based upon a distributed architecture that may be modularly scalable and may reduce, if not eliminate, the need for a centralized signal processor and complex cabling between patch panels and the centralized signal processor. Each patch panel may determine port level connectivity independently. Polling delays and polling-related overhead processing may be reduced or eliminated by supporting real-time monitoring of port connectivity at the port level. The approach provides improved real-time reporting of patch panel connectivity with reduced cabling complexity, increased reliability, and decreased maintenance costs. In addition, the approach is compatible with (i.e., may communicate with and be controlled by) a multipurpose network management system (NMS). In addition, a compatible revision system is provided.

Abstract: A connector (10) having a waterproof function is provided which includes a female member (20) and a male member (40). The female member includes an inner tube portion (23) having a base part (26) having an outer peripheral surface covered with a sealing member (27). The female member includes an outer tube portion (22) having a peep window (28) formed therein such that the sealing member is visible. When coupling of the male member and the female member is complete, the sealing member is hidden by a tube (42) of the male member.

Abstract: A cable assembly (1) includes an insulated housing (2) having a base portion (21) and a mating portion (22) extending forwardly from the base portion; a plurality of terminals (3) received in the insulated housing; a retainer (214) formed on the base portion, said retainer defining a cavity (215) with a rear outlet; a sensor (7) accommodated in the cavity of the retainer; and a lid member (8) covering the rear outlet of the retainer.

Abstract: A detecting device is used to detect the connection of an electronic device. The detecting device includes a circuit board and a connector module. The circuit board includes a power terminal and a signal processing unit. The connector module includes a body and a detecting member. The body has a connecting port and a connecting sidewall. The detecting member is disposed on the connecting sidewall and electrically connected to the power terminal and the signal processing unit, and it has a potential. When a plug of the electronic device is connected to the connecting port, the plug contacts the detecting member to change the potential. The change of the potential is detected by the signal processing unit such that the connection between the electronic device and the connector module is confirmed.

Abstract: A printing material container is detachably attachable to a printing apparatus having apparatus-side terminals. The container includes first and second devices, and a terminal group with first terminals, at least one second terminal and at least one third terminal. The first terminals are connected to the first device and respectively include a first contact portion for contacting a corresponding terminal among the apparatus-side terminals. The second terminal is connected to the second device and includes a second contact portion for contacting a corresponding apparatus-side terminal. The third terminal is for the detection of shorting between the second and third terminals and includes a third contact portion for contacting a corresponding terminal among the apparatus-side terminals. The second contact portion, the first contact portions, and the third contact portion are arranged to form rows. The second contact portion is arranged at an end of one of rows.

Abstract: A lock hole (22) in the form of a window is formed to penetrate a front end portion of a lock arm (15) resiliently displaceable like a seesaw. In a state where two housings (10, 50) are not connected yet, a movement of the detector (30) to a detection position is prevented by such engagement of a latching projection (39) with the lock hole (22) as not to move any further forward. A pair of reinforcing ribs (23) extending from the front end of the lock arm (15) to a position slightly behind inclination supporting legs (16) of the lock arm (15) and arranged at the opposite widthwise sides of the lock hole (22) are formed to project from the lock arm (15). The reinforcing ribs (23) increase the rigidity of the front end portion of the lock arm (15).

Abstract: A connector is provided. The connector can include a first housing that can define a bore for receipt of a first electrical terminal. The first housing can have an outer housing and an inner housing. The inner housing can include a housing lock, and can be moveable relative to the outer housing to enable the housing lock to move from a locked position to an unlocked position. The connector can include a second housing, which can define a bore for receipt of a second electrical terminal. The second housing can include a ramp that engages a portion of the housing lock when the housing lock is in the locked position to move the housing lock into the unlocked position. The ramp can be retained by the housing lock in the locked position to secure the first housing to the second housing.

Abstract: A circuit for detection of an HDMI source device to an HDMI sink device through an HDMI sink connector without regard for the activity state of the HDMI source device has a pull-up resistor having first and second terminals with the first terminal coupled to a DC power source. A switching device is coupled between the pull-up resistor's second terminal and ground at a circuit node. The switching device is switched on to couple the circuit node to ground when power is applied to a control terminal thereof from the HDMI sink connector power pin, and being switched off otherwise. The circuit node is coupled to a DDC/CEC GROUND pin of the HDMI sink connector. The circuit node is readable as a binary signal to indicate the presence of a source device to the HDMI sink connector, wherein the node exhibits a logic low signal when either the node is grounded by the DDC/CEC GROUND pin connection to a source device or when the switching device is switched on.

Abstract: A male coaxial connector is rotatably tightened onto a female coaxial connector to a recommended torque specification by visually observing relative positions of indicators of both connectors, beginning at a pre-torque relationship and continuing tightening with a wrench.

Abstract: Shorting terminals (80) for shorting pairs of terminal fittings (20) are accommodated in a female housing (10), and releasing portions (34) for releasing the shorted state of the pairs of terminal fittings (20) are provided in the male housing (30). Further, a detector (50) is mounted in the female housing (10) for movement between a standby position and a detection position. The detector (50) is permitted to move from the standby position to the detection position while being linked with the operation of the releasing portion (34) after the shorted state of the terminal fittings (20) by the releasing portion (34) is released.

Abstract: An electrical card connector assembly (10) for receiving a first and a cards includes a first card connector (100) and a second card connector (200). The first card connector includes a first housing (12), a plurality of first terminals (21) received in the first housing, and an L-shape shell assembled on the first housing. The first housing associating with the L-shape shell to define a rectangular space. The second card connector (200) includes a second housing (14) extending laterally from the first housing and a plurality of second terminals (22) received in the second housing. The second housing is located in the rectangular space.

Abstract: An embodiment of a device for indicating the integrity of a seal between engaged connectors of a connection assembly. According to an embodiment, a connection assembly includes a first connector having at least one indicator receptacle. The indicator receptacle may receive a removable indicator capable of determining the integrity of a liquid-tight seal within the first connector. Typically, the assembly also includes a second connector operable to interface with the first connector. Further, the indicator includes a cam assembly operable to engage the first connector such that the cam assembly physically indicates when sealing surfaces within the connectors are properly seated with one another.

Abstract: A telecommunications connection system including a plug; an outlet; the plug including: a plug body; transmission contacts supported in the plug body, the transmission contacts transmitting signals when the plug is mated with the outlet; a plug contact mounted on the plug body, the plug contact deflecting towards the plug body upon mating the plug with the outlet, the plug contact carrying a connectivity signal for monitoring port-to-port connectivity; a conductor in electrical connection with the plug contact; an outlet contact for making contact with the plug contact for transmission of the connectivity signal; outlet transmission contacts in the outlet making electrical contact with the transmission contacts.

Abstract: A method and apparatus are provided for monitoring and reporting cable connectivity such as patch panel port-level connectivity on a real-time basis. For patch panel systems, the approach is based upon a distributed architecture that may be modularly scalable and may reduce, if not eliminate, the need for a centralized signal processor and complex cabling between patch panels and the centralized signal processor. Each patch panel may determine port level connectivity independently. Polling delays and polling-related overhead processing may be reduced or eliminated by supporting real-time monitoring of port connectivity at the port level. The approach provides improved real-time reporting of patch panel connectivity with reduced cabling complexity, increased reliability, and decreased maintenance costs. In addition, the approach is compatible with (i.e., may communicate with and be controlled by) a multipurpose network management system (NMS). In addition, a compatible revision system is provided.

Abstract: A centralized connector module, a refrigeration unit and a method of assembling a refrigeration unit. In one embodiment, the centralized connector module includes (1) a dielectric body having interconnected terminal sets corresponding to components connectable thereacross and (2) continuity indicator circuits associated with at least some of the terminal sets and configured to indicate continuity faults with respect to connected ones of the components.

Abstract: An electrical connector includes a receptacle and a plug. The receptacle includes a tubular housing having an axial bore and at least one electrical contact within the bore. The plug is received in the bore of the receptacle housing and includes a tubular core having an axial bore and at least one electrical contact that engages the electrical contact on the receptacle when the plug is coupled to the receptacle. The plug further includes a rotatable collar for securing the plug to the receptacle. A visual indicator on at least one of the plug core or the receptacle housing is visible through a window in the collar to provide a visual indication when the plug is fully coupled to the receptacle.

Abstract: A connector assembly or interface cassette (300), comprising a housing (304) comprising a jack interface (314), said jack interface having a receptacle jack (370) therein, said receptacle jack being configured to receive a plug; and a sensor bezel (20) removably attachable to said jack interface, said sensor bezel comprising a cavity extending therethrough to allow passage of a plug when inserted into said receptacle jack, said sensor bezel including a circuit board proximate said jack cavity, and at least one sensor contact (340) aligned with, and configured to engage, a sensor probe associated with a plug insertable into said receptacle jack, characterised in that the bezel includes connection means (22) accessible from the front of the bezel whereby the bezel can be electrically connected to a sensing component independently of any components inside the said housing.

Abstract: A circuit board connector housing (10) includes slide contacts (19) arranged before contact areas (16) of detecting terminals (15A) with respect to a connecting direction. The slide contacts (19) contact touching portions (30) of shorting terminals (27) during a connecting operation of two housings (10, 20). The slide contacts (19) remove foreign matter from the touching portions (30) during the connecting operation of the two housings (10, 20). Thus, extra efforts to remove foreign matter are not needed before the housings (10, 20) are connected. The absence of foreign matter on the touching portions (30) achieves good quality contact with the contact areas (16) of the detecting terminals (15A) and assures reliability of a connection detecting function.

Abstract: A printing material container is detachably attachable to a printing apparatus having a plurality of apparatus-side terminals. The printing material container comprises a first device, a second device, and a terminal group that includes a plurality of first terminals, at least one second terminal and at least one third terminal. The plurality of first terminals are connected to the first device and respectively include a first contact portion for contacting a corresponding terminal among the plurality of apparatus-side terminals. The at least one second terminal is connected to the second device and includes a second contact portion for contacting a corresponding terminal among the plurality of apparatus-side terminals. The at least one third terminal is for the detection of shorting between the at least one second terminal and the at least one third terminal and includes a third contact portion for contacting a corresponding terminal among the plurality of apparatus-side terminals.

Abstract: A modular electrical bus system for a valve manifold has a main communication module with a plurality of modular I/O units each having a plurality of I/O fittings being both electrically and mechanically connectable together via a bridge member connecting adjacent units and the main communication module. At least one of the modular I/O units is also mechanically separable from and maintains communication connection to the main communication module. One or both of the modular IO units and main communication module may have an alpha-numeric display.

Abstract: A connector is provided with a housing (10) to be connected with a mating connector housing (70) upon receiving a pushing force from behind, and a slider (40) (connection detecting member) to be mounted into the housing (10) relatively movably between a standby position and a connection position. The slider (40) includes such an operating plate (41) as to entirely cover the rear end surface of the housing (10) at a position behind the rear end surface of the connector housing (10). If the operating plate (41) is pushed forward, a connecting operation of two housings (10, 70) proceeds and the slider (40) is moved from the standby position to the connection position.

Abstract: A stacking connector has a first connector and a second connector respectively mounted on wiring boards and pressed against each other in a predetermined direction to be mated with each other, thereby electrically connecting the wiring boards. The first connector has a projection projecting in the same direction as the predetermined direction. The second connector has: a turning section that is turnable on a turning shaft disposed in a direction intersecting the predetermined direction, and having a first portion that enables turning of the turning section by being pressed by the projection when the first and second connectors are pressed against each other; and a wall section that conceals the turning section and has an opening formed therethrough at a position reached by a second portion of the turning section as a result of turning of the turning section when mating of the first and second connectors is completed.

Abstract: An electrical connector includes a receptacle and a plug. The receptacle includes a tubular housing having an axial bore and at least one electrical contact within the bore. The plug is received in the bore of the receptacle housing and includes a tubular core having an axial bore and at least one electrical contact that engages the electrical contact on the receptacle when the plug is coupled to the receptacle. The plug further includes a rotatable collar for securing the plug to the receptacle. A visual indicator on at least one of the plug core or the receptacle housing is visible through a window in the collar to provide a visual indication when the plug is fully coupled to the receptacle.

Abstract: Plug detection mechanisms can be provided for detecting when a plug of an accessory component is present within a jack of an electronic device. A detect contact and a jack contact may be positioned within a receptacle of the jack such that a signal path may be created through the plug and between the detect contact and the jack contact when the plug is present within the receptacle of the jack. The detect contact may be biased to exert a retention force on the plug. The detect contact may be positioned to contact the plug within an indent of the plug.

Abstract: A connection detection device is mounted on an apparatus which has a circuit board with connectors and load circuits connected to the circuit board via each of the connectors. The connection detection device that detects a connection state between the circuit board and the load circuits includes a plurality of serial connection circuits in which pull-down resistors are connected in series with each of the connection detection signal lines wired to a predetermined contact of the connectors of the circuit board, wherein the pull-down resistors have different resistance values, a pull-up resistor connected to a parallel connection circuit in which the plurality of serial connection circuits are connected in parallel, a detection unit to detect voltage values of a connection point between the pull-up resistor and the parallel connection circuit, and a determination unit to determine the connection state between the circuit board and the load circuits by the detected voltage value.

Abstract: A movable member (36) is located at a malfunction preventing position and a pair of functional terminals (25) are shorted by a shorting terminal (50) unless two housings (10, 20) are properly connected, whereas the movable member (36) is moved to a connection detecting position and the shorting terminal (50) shorts a pair of detection terminals (14) at the same time as being disengaged from the pair of functional terminals (25) when the two housings (10, 20) are properly connected. Since the shorting terminal (50) is commonly used to short the pair of functional terminals (25) for the malfunction prevention and the like and to short the pair of detection terminals (14) for the detection of a connected state of the two housings (10, 20), the number of parts can be reduced.

Abstract: A mechanical device that indicates prior mating. The device comprises a first part having a first conductive device movable from a first position to a second position and a plurality of second conductive devices, and a second mating part including a plurality of third conductive devices mateable to the plurality of second conductive devices. On initial mating of the first and second part, the second part causes the movable first conductive device to move from the first position to a second position where it is captured, while closing a circuit that causes a signal to be sent. Further mating of the first and second parts connects the plurality of second conductive devices to the plurality of third conductive devices. In subsequent unmating and remating of the first and second parts, the first conductive device, being captured in its second position, does not result in a circuit closing before the plurality of second conductive devices mate with the third conductive devices.

Abstract: A secure socket apparatus includes a socket unit, a power supply unit and an overload-avoid unit. The socket unit includes at least one socket for receiving a plug of an electronic device. The power supply unit includes a switch module connected to the socket, at least one comparing element connected to the switch module and a sensing module connected to the switch module. The overload-avoiding unit is connected to the comparing element. The overload-avoiding unit can be connected to the mains so that electricity can be provided to the electronic device from the mains through the socket apparatus.