A switchgear installation has at least four junctions connected in the form of an annulus. These junctions are connected with each other by means of interruptable current branches. Each junction of a first group of junctions containing at least two elements may be connected with each junction of a second group of junctions by means of a bridging branch. The bridging branches contain a common power or load switch together with a plurality of disconnecting switches, which are provided between a fi...

A gyrator network having a pair of oppositely phased voltage-to-current converters connected between two ports. Unlike prior art networks, each voltage-to-current converter is a single-stage circuit, namely, a difference amplifier in which the output resistor is replaced by a constant current source. This has the effect of producing a current change in a load connected to the output of the difference amplifier, which current change is proportional to a change in the input voltage. The resulting ...

A capacitive network particularly suited for radio frequency shielding is formed as a layer or stack type condenser having a gap cut therein normal to the planes of the layers to divide the structure into stack portions. Adjacent groups of dielectric and metallic coating layers form ranges of capacitance wherein each range includes internal series capacitive circuits interconnected by bridging coatings between the stack sections in accordance with desired capacitance circuit configurations.

An AGC network connected between the input and output terminals of an amplifier avoids distortion and yet permits the preamplifier to provide a high level output signal. A part of the output signal of the amplifier is rectified, filtered and applied to a transistor to develop in its output circuit two D.C. signals that are applied to the base-emitter junctions of two transistors of opposite conductivity types that shunt the input terminal of the amplifier.

An improved rectifying network employing a semiconductor diode, a saturable reactor connected in series with the diode between a pair of terminals, and means for biasing the saturable reactor to saturate the saturable reactor core for forward diode current flow.

A plurality of paging terminals each serving a locality are connected by a multi-drop communication link to establish an inter-regional paging network. The terminals observe a token passing protocol to provide for an orderly sequential use of the communication link. Down terminals are skipped in the sequence. The lack of activity on the communication link will cause a start-up timer in the terminal to reset. Retransmissions are requested by a terminal from another terminal which is on-line when ...

A communication network advantageously uses existing broadcast channels to instruct remote receivers and eventually use automatic dial-up capability for forming a telephone communication link with a central processing facility. The network is capable of providing many services from remote reading of meters to electronic mail and electronic billing. The network is preferably shared by a number of large users communicating with a host of subscribers.

For decreasing a leakage current, there is disclosed a protective network fabricated on a semiconductor substrate for preventing a protected node from a destruction comprising, a semiconductor substrate of a first conductivity type, an insulating film overlying the semiconductor substrate, a first impurity region of a second conductivity type formed in the semiconductor substrate and providing a signal path with a relatively large resistance value electrically connected at a contact portion ther...

A resistor network having resistor elements disposed equally spaced apart in parallel relation to each other and one or more insulation substrates to which the resistor elements are rigidly mounted. The substrates and the elements are all enclosed in a resin seal in the form of a belt. The resin seal is provided with one or more holes extending through it for dissipating heat. The holes are rectangular in shape, and are disposed between every two of the resistor elements or in other regular mann...

A multicomputer network that includes a plurality of individual computers and an interconnection system for interconnecting the computers. An interface is provided for connecting the computers to the network interconnection system which includes a bus controller and a bus.