Abstract: A memory card connector includes an insulative housing having a rear terminal-mounting section and at least one side wall section extending forwardly from one end of the rear section defining a card-receiving space therebetween. A first conductive terminal is mounted on the housing and has a first contact portion with a first protrusion thereon. A second conductive terminal is mounted on the housing and has a second contact portion with a second protrusion thereon. The contact portions of the terminals are normally spaced from each other but are juxtaposed so that the contact portions and the protrusions are mutually engaged in response to a memory card inserted into the card-receiving space. The protrusions are offset from each other, whereby the first protrusion of the first terminal engages the second contact portion of the second terminal, and the second protrusion of the second terminal engages the first contact portion of the first terminal.

Abstract: A compact vehicle-mounted electrical outlet box offering a reliable plug blade detection function. The electrical outlet box is formed from synthetic resin rectangular case 1 which includes body 2 and cover 3. A pair of electrical plug blades 100 and 101 are inserted into plug blade insertion slots 5 located on the front surface of case 1 through which the plug blades contact two blade receiver parts 10. The forceful contact of plug blades 100 and 101 rotate two pivot levers 12 which convert the insertion force of plug blades 100 and 101 to a directional force. Two return springs 13 apply pressure to pivot levers 12 in a direction opposite to that applied by the insertion of plug blades 100 and 101. Printed circuit block 14, which is comprised of circuit base plate 14a to which each microswitch 14b is installed, is housed within case 1. The two pivot levers 12 are located at the approximate mid-point of body 2 between the two mutually facing blade receiver parts.

Abstract: A safety socket device includes a base having two conductor bars, and two female contact strips for receiving prongs of plugs. A conductor member and a conductor element are disposed between the conductor bars and each includes two switches located on the sides of the female contact strips, for selectively and electrically coupling to the conductor bars and the female contact strips together. The female contact strips may be electrically coupled to the conductor bars only when the four switches are actuated by the prongs of the plug simultaneously, to prevent the insertion of foreign objects into the safety socket device by infants and small children.

Abstract: A circuit selector assembly including an electrical conductor, an electrical contact, a first spring beam connected to the electrical contact and a second spring beam connected to the electrical contact. The second spring beam biases the electrical contact to a first position, the first spring beam being deflected when the electrical contact is in a second position, the second position being defined as when the electrical contact is contacting the electrical conductor.

Abstract: A fail safe electrical receptacle (1) having normally open switches (6) and normally closed switches (7). The normally open switches (6) are wired to a breaker (11) and are located above the slots (2) and (3) while the normally closed position switches (7) are located below the slots (2) and (3). The contact arms (18) wired to the neutral slot (2) are neutral while the contact arms (10) wired to the hot slot (3) are grounded. If the switch levers (9) and (8) located behind the slots (2) and (3) are pressed against the normally closed switches (7), a circuit is not completed and therefore no power is provided to the outlet. However, if the switch levers (9) or (8) are pressed against the normally open switches (6), the circuit between the hot (3) and the ground (17) or the ground (17) and the hot slot (3) is completed and the breaker (11) is tripped.

Abstract: The present invention is to provide a power outlet comprising two elastic pieces being formed at the rears of two insertion holes of the outlet panel, wherein one end of each elastic piece, including a fastening hole corresponding with the insertion holes, is disposed on a fastening board connected with the outlet panel and the other end of each elastic piece facing a base of a chassis of the power outlet is connected with one end of an elastic element. The other end of the elastic element is connected with the base of the chassis. In addition, a switch comprising a spring is connected between the fastening board and the base of the chassis, when the panel being compressed towards the inside of the chassis, the switch can be locked in position, enabling a user to safely and easily operate the electricity power outlet.

Abstract: A control assembly comprising a switch pad and a circuit board. The switch pad has a connection member, a first contact adjacent the connection member, and a flexible dome having a second contact. The circuit board is engaged with the switch pad and includes an engagement area engaged with the connection member, third contacts adjacent the engagement area and fourth contacts. The flexible dome of the switch pad is configured to be depressed to engage the second contact with the fourth contacts to electrically connect the fourth contacts. The first contact electrically connects the third contacts when the circuit board is engaged with the switch pad. The first contact and the third contacts form a first circuit for determining if the switch pad is properly engaged with the circuit board such that the second contact will form a second circuit with the fourth contacts when the flexible dome is depressed.

Abstract: The invention concerns an adaptor (100) adapted to establish an electric connection with a portable electronic instrument (200) and to allow transmission of electric signals. The portable instrument is controlled via at least one control member (210) having first electric contact means (213) accessible from the exterior of the instrument. The control member is capable of occupying a first non pushed-in position and a second pushed-in position. The adaptor includes a support (101) having a pattern cavity (102) dimensioned to receive the instrument. The pattern cavity includes at least one housing (110) in which are arranged second electric contact means (119). The housing is dimensioned to receive the control member, such that, on the one hand, the control member is brought into the pushed-in position and, on the other hand, the first and second electric contacts are brought into contact, when the instrument is placed in the pattern cavity.

Abstract: A data processing apparatus includes a main body, a cover unit having a display such as an LCD, and a detecting mechanism for detecting the opening and closing of the cover unit in relation to the main body. The detecting mechanism includes a cam mounted coaxially to and rotating together with a pivot shaft that can rotate together with the cover unit, and a detecting switch mounted to the main body and directly or indirectly actuated by the action of the cam as the cover unit opens and closes to detect the opening and closing of the cover unit.

Abstract: A memory card connector includes an insulative housing having a rear terminal-mounting section and at least one side wall section extending forwardly from one end of the rear section and defining a card-receiving space therebetween. First and second switch terminals are mounted on the housing and have first and second contact portions, respectively. A third switch terminal is mounted on the housing and has a pair of third contact portions engageable by the first and second contact portions of the first and second switch terminals, respectively, in response to inserting a memory card into the card-receiving space. The third switch terminal includes an elongated base having opposite ends, with at least the opposite ends of the base fixed to the housing. A pair of contact spring arms are cantilevered from the opposite ends of the base, whereby the opposite ends form a pair of fulcrums for flexing of the contact spring arms. Free ends of the arms form the third contact portions of the third switch terminal.

Abstract: A telecommunications apparatus for use with a plug having at least first, second and third pins. The telecommunications apparatus includes a plug connector for receiving the plug. The plug connector includes at least first, second and third electrical contacts for electrically contacting the first, second and third pins, respectively, when the plug is inserted in the plug connector.

Abstract: A connector with a switch comprises a housing for defining a terminal accommodation chamber opened through a plug pin insertion hole. A fixed terminal and a switch terminal are held by the housing. The switch terminal comprises a U-shaped section opened toward the plug pin insertion hole in the terminal accommodation chamber. The U-shaped section is elastically deformable in a direction crossing the direction of plug pin insertion. The switch terminal is switched from a state in which it is brought into contact with the fixed terminal to a state in which the contact thereof with the fixed terminal is cut off as the U-shaped section is deformed in the direction crossing the direction of plug pin insertion.

Abstract: A network tap system and method are disclosed. The system includes a housing, a first connection block, a second connection block, a third connection block, a device switch, and a communication port. The housing has a thermoplastic composition resin housing. The first connection block is configured to accept a first portion of a network trunk cable. The second connection block is configured to accept a second portion of a network trunk cable. The third connection is configured for connection to a network device. The device switch is configured to short the network trunk cable when the network device is not connected to the third connection. The device switch is configured to operate without the need for manual selection. The communication port is configured to accept a programming cable from a computer. The communication port is also configured for access while the housing is mounted on the DIN rail.

Abstract: A connector housing (6) of the connector device (1) is composed of an outer housing (9) to be mounted onto a printed circuit board (2) by screwing, and an inner housing (8) connected to the outer housing (9) so as to be movable in the right and left direction with respect to the outer housing (9). Into the inner housing (8), there is incorporated a terminal (7) including a connecting portion (7a) to be connected by a terminal (5) of a mating connector device (3), a spring portion (7c), and a switch contact (7b) respectively formed integral with the terminal (7). On the printed circuit board (2), there is disposed an electrode (2a) with which the switch contact (7b) can be elastically contacted. Thanks to this structure, by switchingly moving the inner housing (8) in the right and left direction, circuit switching can be achieved.

Abstract: A load side terminal connected to a load portion, a power source side terminal connected to a power source portion and a sacrifice electric pole connected to the power source side terminal are fixed to an apparatus main body. A movable plug is provided movably to the apparatus main body. The sacrifice electrode is constituted by a sacrifice electric pole with resistor connected to the power source side terminal via a resistor and a through sacrifice electric pole directly connected to the power source side terminal and arranged to shift from each other such that in a procedure of moving a conductive portion of the movable plug from a circuit opened position to a circuit closed position. The conductive portion is firstly brought into contact with the load side terminal, successively brought into contact with the sacrifice electric pole and finally brought into contact with the power source side terminal.

Abstract: An electrical receptacle, including a power source and a contact for making an electrical connection between the power source and a prong of an electrical plug. At least one switch is in series between the contact and the power source, and a smooth member covers at least a portion of the at least one switch. The switch is normally in the closed position and moves in a direction from the closed position to the open position due to a force applied to the smooth member covering at least a portion of the at least one switch by the prong of the electrical plug when the prong of the electrical plug is inserted into the electrical receptacle and contacts the resilient, smooth member.

Abstract: A plug connector has a U-shaped snap-on clip with a web, which incorporates a contact lug. The web is seated in a slot of the casing. A contact is situated at the end of the U-shaped snap-on clip, between its arms. An opening for inserting a contact pin is situated in the top side of the housing. This contact pin spreads the arms of the U-shaped snap-on clip, so that they detach from the contact. This plug connector, which is especially suited for use in a cordless radiotelephone, is distinguished by a small structural size, low production costs, a small number of components, high contact reliability, and an especially low juncture resistance.

Abstract: An actuator element for levering in and out printed circuit modules. The actuator element has an end piece that is adapted to be linked with a printed circuit module an actuator lever. The actuator lever is rotatably mounted on the end piece and has at least one handle part and one locking slide that can be slid between at least two switch positions. The locking slide, in a first switch position, retain the actuator lever in a first position that corresponds to a fastened state of the printed circuit module, and releases the actuator lever in a second switch position.

Abstract: A safety electrical outlet for receiving metallic prongs of an electrical plug. The outlet has a housing with at least two plug passages being sized for receiving the metallic prongs of the electrical plug, and two metallic connectors mounted on the housing for connection to an electrical power source. At least two transverse channels communicate with the corresponding plug passages and extend toward the corresponding metallic connectors with at least two spring-biased members being inserted in each corresponding transverse channel and being movable between an extended position where the spring-biased member partially extends within the corresponding plug passage and a retracted position where the corresponding metallic prong that is inserted inside the passage pushes against the spring-biased member so that it touches the corresponding metallic connector for establishing an electrical contact between the metallic prong and the corresponding metallic connector.

Abstract: A breaker apparatus which has a pair of fixed electrodes in a fixed-side housing and a movable electrode in a movable-side housing. The fixed electrodes and the movable electrodes are brought into contact and separated from each other by a guide that allows the housings to move toward and away from each other. A pin in the fixed-side housing mates with a groove in a drive member that is part of the movable-side having to assist in the movement of the housings when the device member is moved in the appropriate direction.

Abstract: A mini BNC connector, which provides a better signal transmission quality and can be fabricated conveniently, includes a metal outer casing with two locating cylinders and a joining chamber communicating with the two cylinders, two insulators fitted in the locating cylinders respectively with each of the two insulators having a piercing hole, two terminals joined to the piercing holes respectively with a tail section respectively extending to the joining chamber, two conductors connected to the tail sections respectively and a further insulator having two through holes joined to the conductors respectively and fitting with the inner side of the joining chamber so as to fix the conductors.

Abstract: Electrical receptacles configured to eliminate arc faults rather than merely detect such faults with attendant circuit disconnection, the invention contemplates low-cost, child-safe electrical receptacles useful in residential situations and which can be fitted within the confines of single gang enclosures. The safety receptacles of the invention can be used in all use situations including both residential and industrial applications to increase safe use of electrical receptacles in residential applications in particular and to decrease industrial liabilities. In essence, the safety receptacles of the invention prevent arcing during insertion of a plug into the receptacle, during residence of the plug in the receptacle and during removal of the plug from the receptacle with a substantial load to the receptacle.

Abstract: A unit for connecting conductors to terminals having a body having a bottom, and devices for connecting two conductors to a same terminal and disconnecting one of the conductors without disconnecting the other conductor as well as connecting to the terminal one of the conductors and thereafter the other conductor also without the one conductor being affected, with acting on the conductors perpendicularly to the bottom of the body.

Abstract: The invention relates to a device for locking a pluggable electrical unit in an enclosure of an electrical base unit, the pluggable electrical unit having at least one arresting element, which engages in a mating arresting element in the enclosure of the base unit in such a way that the physical removal of the pluggable electrical unit is prevented in the locked state. For the slot-dependent detection of the actuation of locking elements on the part of the base unit, it is proposed to arrange the arresting element (21) such that, in the rest position, it is concealed by a movable covering (24) in such a way that the arresting element (21) is only accessible once the covering (24) has been removed. The covering (24) is in operative connection with an electrical switching contact (25), each position of the covering (24) deviating from the rest position triggering the switching contact (25). The covering (24) can only be brought into the rest position in the locked state of the pluggable electrical unit (2).

Abstract: The write protect detection switch SW1 to detect the slide position of the write protect button 3 is arranged on the side wall portion of the connector housing and the card recognition switch SW2 to detect the presence or absence of the inserted card 1 is arranged inside the card abutment wall of the connector housing. This construction allows the write protect detection switch and the card recognition switch to be accommodated efficiently in a small space.

Abstract: A telecommunications server comprises a switch/larch mechanism for use in online removal or insertion of a peripheral card, such as a PCI card. A bulkhead is adapted for mating engagement with a bulkhead mounting bracket of the peripheral card when the peripheral card is installed in the switch/latch mechanism. A doorbell switch having a vertical range of motion is manually depressed to signal the server and commence an orderly shutdown of the peripheral card in advance of online replacement of the peripheral card. A panel switch provides a mechanical lock retaining the peripheral card in place, and also function as a backup power interrupt device to protect the peripheral card in the event that depression of the doorbell button does not result in an orderly shutdown of the peripheral card.

Abstract: In a switch having first and second contacts, a first contacting portion of the first contact is movable in a first direction alone while a second contacting portion of the second contact is movable only in a second direction intersecting with the first direction. The first contacting portion is supported by a first spring portion. The second contacting portion is supported by a second spring portion and faced to the first contacting portion in the first direction to be brought into contact with the first contacting portion with the second spring portion being bent. The first and the second contacting portions are in a mutual relationship such that, when the first contacting portion is press-contacted by the second contacting portion in the first direction, the second contacting portion is applied with component force in the second direction.

Abstract: An electrical safety outlet includes a safety switch for a standard three-prong electrical outlet. The switch is located directly between the neutral and voltage slots on the outlet. In its normal state, the switch is not depressed, shutting off all current to the electrical outlet. However, when an electrical plug is inserted into the outlet, the main body of the plug will depress the switch, allowing the flow of current to begin. The addition of the safety switch will considerably reduce the risk of accidental electrical shock, which is especially effective towards children.

Abstract: A receptacle portion of an electrical connector assembly including an axially movable sleeve biased to a default sleeve position. At the default sleeve position, a switch having a switch arm biased against the axially movable sleeve is in an open condition. Upon mating of the receptacle with a mating plug, the sleeve moves axially for moving the switch to a closed position.

Abstract: A socket connector (1) includes an insulating housing (10), a shell (20) assembled to the housing, a plurality of terminals (30, 31), a plurality of resilient contacts (41, 42), a slide (50) and a resilient element (60). The slide contacts with selected different terminals when it is drawn by one of the resilient contacts. The resilient element is positioned between a side wall of the housing and at least one of the resilient contact for increasing the contact force of the resilient contact on an inserted audio plug.

Abstract: A light unit for use in a series circuit has a mechanical switch for providing an alternate circuit path around the leads of a bulb when the bulb is loose or removed. The mechanical switch is biased toward a closed position such that, when the bulb is removed from the light unit, the switch closes to provide the alternate circuit path. The switch is displaced to an open position when a bulb is secured to the light unit to break the alternate circuit path and route electricity through the bulb. A shunt assembly having a high resistance element and a retainer can be secured within a socket cavity of the light unit.

Abstract: A system for selectively recessing an electrical outlet includes a housing that has an opening. An outlet fixture has at least one receptacle for receiving an electrical plug. A guide within the housing receives the outlet fixture and permits the outlet fixture to be moved within the housing. A latch selectively holds the outlet fixture in a recessed position until the latch is released to permit the outlet fixture to return to a non-recessed position. A method of selectively recessing an electrical outlet includes receiving and inserting a plug into an electrical outlet body within a housing. The electrical outlet body is moved along guides into the housing. The electrical outlet body is stopped at a recessed position within the housing, and the electrical outlet body is restrained in a recessed position. The method further includes selectively returning the electrical outlet body to a position proximate to the front of the housing.

Abstract: A connector system, including two electrical connectors configured to mate together; one electrical connector containing a magnetic flux responsive device configured for generating an electrical signal; the other electrical connector containing a magnet which is located in association with the magnetic flux responsive device when the two electrical connectors are mated together.

Abstract: A switch-equipped coaxial connector comprises an insulative housing (2) having a hollow section (14) and a bottom plate (15) between the hollow section (14) and the board, a fixed terminal (3) attached to the insulative housing (2) from side and having a contact section (25) provided within the hollow section (14), a movable terminal (4) attached to the insulative housing (2) from side and having a movable section (33) biased upwardly within the hollow section (14) to make contact with the contact section (25), a central conductor (5) for sliding in the axial direction of the insulative housing (2), a spring member (6) for supporting the central conductor (5), and an outer conductor (7) provided outside the spring member (6) and the insulative housing (2) such that when the central conductor (5) is depressed, the movable section (33) is separated from the contact section (25) of the fixed terminal (3).

Abstract: A first slot for containing a first card and a second slot for containing the second card are disposed in upper and lower sides, the first contact terminals are disposed so that respective soldered portions 40a of a plurality of first contact terminals for the first card are positioned at one side of front surface and rear surface sides of a connector housing, and said second contact terminals are disposed in opposition to the first contact terminals so that respective soldered portions 50a of a plurality of second contact terminals for the second card are positioned at the other side of the front surface and rear surface sides of the connector housing.

Abstract: A connector system, including two electrical connectors configured to mate together; one electrical connector containing a magnetic flux responsive device configured for generating an electrical signal; the other electrical connector containing a magnet which is located in association with the magnetic flux responsive device when the two electrical connectors are mated together.

Abstract: A load side terminal connected to a load portion, a power source side terminal connected to a power source portion and a sacrifice electric pole connected to the power source side terminal are fixed to an apparatus main body. A movable plug is provided movably to the apparatus main body. The sacrifice electrode is constituted by a sacrifice electric pole with resistor connected to the power source side terminal via a resistor and a through sacrifice electric pole directly connected to the power source side terminal and arranged to shift from each other such that in a procedure of moving a conductive portion of the movable plug from a circuit opened position to a circuit closed position. The conductive portion is firstly brought into contact with the load side terminal, successively brought into contact with the sacrifice electric pole and finally brought into contact with the power source side terminal.

Abstract: A shock-resistant electrical outlet is designed to prevent the application of power to the outlet only when a standard electrical plug is inserted nearly all of the way into the outlet. This is accomplished by providing at least two normally open switches in series circuit between the voltage line contact and an internal voltage contact which is engaged by the voltage prong of an electrical plug inserted into the outlet. The switches are closed by switch actuators located for simultaneous engagement by both the neutral and voltage prongs of an electrical plug when it is nearly fully inserted into the outlet to complete a circuit between the line voltage contact and the internal voltage contact in the voltage slot of the outlet.

Abstract: A socket provides power to a mating connector plug when actuated by a switch integral with the socket. The switch can be actuated by insertion of the connector plug, by pivoting open a socket cover, by sliding a slide cover into an operational position, or by a combination of the above. The switch is isolated from the power supplied to the socket and acts as a power supply signal to enable socket power. The socket is powered only when needed as indicated by the actuation method, thereby reducing draw on a power supply connected to the socket. The switch actuation methods described also provide safety features by disabling power to the socket unless the socket is actually in use. The socket cover and slide cover also prevent access to the socket unless positioned to receive a connector.

Abstract: A shock-resistant electrical outlet is designed to prevent the application of power to the outlet only when a standard electrical plug is inserted nearly all of the way into the outlet. This is accomplished by providing at least two normally open switches in series circuit between the voltage line contact and an internal voltage contact which is engaged by the voltage prong of an electrical plug inserted into the outlet. The switches are closed by switch actuators located for simultaneous engagement by both the neutral and voltage prongs of an electrical plug when it is nearly fully inserted into the outlet to complete a circuit between the line voltage contact and the internal voltage contact in the voltage slot of the outlet.

Abstract: An electrical assembly has first and second initially separated connection portions, of which the first is adapted to be secured to a first component, such as a microswitch, and the second is adapted to be secured to a second component, such as electrical wiring through insulation displacement, with the first and second connection portions further being capable of releasably fitting together, such as by means of a latch to bring the first and second components into electrical contact.

Abstract: In a switch having first and second contacts, a first contacting portion of the first contact is movable in a first direction alone while a second contacting portion of the second contact is movable only in a second direction intersecting with the first direction. The first contacting portion is supported by a first spring portion. The second contacting portion is supported by a second spring portion and faced to the first contacting portion in the first direction to be brought into contact with the first contacting portion with the second spring portion being bent. The first and the second contacting portions are in a mutual relationship such that, when the first contacting portion is press-contacted by the second contacting portion in the first direction, the second contacting portion is applied with component force in the second direction.

Abstract: A branch assembly for a communication bus is shown that allows easy connection and removal of devices from the bus. A switch is located within each assembly to direct the bus either from one bus interface directly to a second bus interface or from one bus interface through a branch interface to the second bus interface, as appropriate depending on the presence of device at the branch interface. The switch is integrated into the assembly and is mechanically actuated by the presence or absence of a connector at the branch interface.

Abstract: The invention relates to a device for locking a pluggable electrical unit in an enclosure of an electrical base unit, the pluggable electrical unit having at least one arresting element, which engages in a mating arresting element in the enclosure of the base unit in such a way that the physical removal of the pluggable electrical unit is prevented in the locked state. For the slot-dependent detection of the actuation of locking elements on the part of the base unit, it is proposed to arrange the arresting element (21) such that, in the rest position, it is concealed by a movable covering (24) in such a way that the arresting element (21) is only accessible once the covering (24) has been removed. The covering (24) is in operative connection with an electrical switching contact (25), each position of the covering (24) deviating from the rest position triggering the switching contact (25). The covering (24) can only be brought into the rest position in the locked state of the pluggable electrical unit (2).

Abstract: A unit for connecting conductors to terminals having a body having a bottom, and devices for connecting two conductors to a same terminal and disconnecting one of the conductors without disconnecting the other conductor as well as connecting to the terminal one of the conductors and thereafter the other conductor also without the one conductor being affected, with acting on the conductors perpendicularly to the bottom of the body.

Abstract: A direct-current power jack includes an insulative housing, a hole defined in a front face of the housing for insertion of a complementary power plug thereinto, a ground contact, a center contact, two switch contacts, two conductive contacts, and a joining member. When the plug is inserted into the power jack, the plug electrically connects firstly with the ground contact. The plug then electrically connects with the center contact. The plug then pushes the first switch contact to cause the first conductive contact to electrically connect with the joining member, and then pushes the second switch contact to cause the second conductive contact to electrically connect with the joining member. An electrical circuit electrically connecting with the power jack includes a ground circuit, a resistor, a capacitor and a load. The power jack prevents in-rush current sparking when it is engaged with the plug.

Abstract: A cover structure for the cover of an electronic device where a first part is movable in relation to a second part is described. The first part comprises a certain electrical component (303, 503) and means (307, 308, 309, 506, 507, 508, 509, 510) for forming an electrically conducting connection between the first and second parts. The first part comprises an outer cover part (301, 501) and an inner cover part (302, 502) of substantially the same size, whereby the electrical component is located between the inner cover part and the outer cover part. Further the first part comprises slide conductors (308, 309, 506, 507) on such a surface of the inner cover part which is not against the outer cover part.

Abstract: A connector has an insulative frame (52) and has rows (34, 36) of identical contacts (70) for engaging pads on a smart card, where at least one of the contacts that otherwise could engage a pad, is used to close or open a switch to detect the presence of a smart card.

Abstract: A connection system for an electronic endoscope, including a flexible scope and a video-signal processing unit, is utilized to establish a detachable connection between the scope and the unit. The scope has a solid image sensor to produce image-pixel signals, and the unit has a processor for processing the image-pixel signals to produce a video signal. The scope includes a first power line, a first group of signal lines and a first ground line which are utilized to feed said image-pixel signals to the unit, and the unit include a second power line, a second group of signal lines and a second ground line which are utilized to receive the image-pixel signals from the scope. A transistor is provided in one of the first and second power lines, and is usually in an OFF-state.

Abstract: A safety wall socket assembly includes a housing, a pair of outer switches, a pair of inner contacts, a pair of conductor wires and a pair of interconnection wires. The outer switches are pivotally mounted to the housing and disposed in the respective cavities thereof. The outer switches are biased to a circuit break condition between the conductor wires and interconnection wires and pivotally displaced to a circuit make condition between the conductor wires and interconnection wires in response to partial insertion of the prongs of an electrical plug into the cavities. No electrical connection is established between the outer switches and the prongs of the plug. The inner contacts are mounted to the housing and disposed in the respective cavities thereof spaced inwardly from the outer switches.