Showing papers on "Electrical network published in 1969"

Nonvolatile direct storage bistable circuit

Abstract: A bistable electrical circuit, such as a flip-flop, incorporating insulated-gate field-effect transistors as non-volatile memory elements. Read and write circuitry couple the memory elements to amplifying (switching) stages of the bistable circuit such that the state of the flip-flop, at the time a write signal is applied to the memory elements, is nonvolatilely stored. Upon application of a read signal the flip-flop is initialized to a state which is a function of the state of the flip-flop during the writing mode of operation. Data storage is maintained in the absence of all applied power to the bistable electrical circuit.

Electrical induction apparatus

Abstract: An electrical induction apparatus, adaptable for use as a transformer or a reactor which contains a magnetic circuit and an electrical circuit. The active portions of the magnetic circuit are formed of electrically isolated segments, each segment being electrically connected to a distinct portion of the electrical circuit such that when a voltage is impressed on the electrical circuit a systematic and uniform progression of voltage is imposed on the magnetic circuit. The electrical isolation appearing between each segment of the magnetic circuit is coated with a material adapted to establish electric field boundaries between the segments and prevent the creation of high electrical stress points while also preventing excessive eddy current loses.

Electrical connection device for vehicles

Abstract: An electrical connection device is disclosed for establishing an electrical circuit between a relatively fixed stationary location and a movable vehicle and comprises a directional guide and connection receptacle mounted on the vehicle and an elongated probe carrying electrical conductors movably mounted on a fixed support and incorporating switch means which are actuated by the positioning of the probe relative to its environment and support means as by registry with the directional guide and connection receptacle on the vehicle.

Circuit impedance measuring device employing clamp on magnetic current sensor

Abstract: This disclosure relates to an electrical component impedance measuring device that is capable of measuring the impedance of an electrical component permanently connected in an electrical circuit. It comprises a source of electrical energy with means coupled to this source for connecting the electrical component in circuit with the source. A split-magnetic core having an opening position therein is supported by means that position a lead from the electrical component through this opening with the lead carrying current that flows only through the electrical component whose impedance is to be measured. Means are coupled to the core for sensing and measuring the flux in this core.

Bistable electrical circuit with non-volatile storage capability

Abstract: A bistable electrical circuit, such as a flip-flop, incorporating insulated-gate field-effect transistors as nonvolatile memory elements. Read and write circuitry couple the memory elements to amplifying (switching) stages of the bistable circuit such that the state of the flip-flop, at the time a write signal is applied to the memory elements, is nonvolatilely stored. Upon application of a read signal the flip-flop is initialized to a state which is a function of the state of the flip-flop during the writing mode of operation. Data storage is maintained in the absence of all applied power to the bistable electrical circuit.

Transient Radiation Current Generator Model for Semiconductor Devices

Abstract: Mathematical models of devices can generally be classified into one of two categories. The first model ip formulated on physical properties of the device through a series of complex equations dependent upon doping levels fabricating Processes, and geometry. The second model is formulated on the basis of an equivalent electrical circuit which simulates the observable electrical behavior. The improved mathematical model for describing the photogenerated current in a radiated p-n junction described here falls into the second category. and is intended for use in the Transient Radiation Analysis by Computer (TRAC) family of transient circuit analysis Programs.

Electrical circuit structure,and particularly voltage regulator structure for automotive vehicle use

Abstract: SEMICONDUCTOR ELEMENTS AND PASSIVE ELECTRICAL NETWORK ELEMENTS ARE PLACED ON INTERCONNECTING SHEET METAL CONDUCTOR UNITS WHICH HAVE HOLES PUNCHED THEREIN TO RECEIVE CONNECTING LEADS, AND EXTENDING TABS PUNCHED OUT, THE TABS BEING BENT OVER TO HOLD A CERAMIC RESISTANCE SUBSTRATE PLATE THERETO, AND, IF EXTENDING, FORMING ATTACHMENT TABS OR LUGS FOR OTHER CIRCUIT CONNECTIONS. THE ENTIRE STRUCTURE IS ENCAPSULATED IN A POTTING COMPOUND, THE RESISTANCE PLATE BEING PARALLEL TO THE PLATE-LIKE CONDUCTOR UNITS SO THAT DIFFERENTIAL EXPANSION UPON WIDE TEMPERATURE SWINGS (FOR EXAMPLE -40*C TO 110*C) WILL NOT TRANSFER STRESSES DIFFERENTIALLY TO THE CERAMIC RESISTANCE PLATE AND THE OTHER ELEMENTS AND CONDUCTOR UNITS THUS CAUSING LOOSENING OF CONNECTIONS.

Electrical components, electrical circuits, and the like, and methods for making the same by means of radiation sensitive elements

Abstract: Electrical components, such as resistors, capacitors, and the like, and electrical circuits and methods for making the same by means of radiation sensitive elements comprising essentially a metallic layer in proximity with and adhering to a layer of an inorganic material capable, when exposed to electromagnetic actinic radiation, to interreact with the metal or metals of the metallic layer. The electrical components and electrical circuits are, according to the method of the invention, ''''printed'''' upon the radiation sensitive element by projecting thereon appropriate patterns, and the electrical characteristics of the components and circuits are determined by the geometrical dimensions of the patterns projected upon the radiation sensitive elements and by the amount of irradiation of the elements.

Warning system for indicating failure of electrical circuits

Abstract: A warning system for vehicles such as automobiles and the like, to indicate when one of at least two lamps of the vehicle is inoperative. In a preferred embodiment of the present invention a dual winding coil is disposed in separate circuits connecting a pair of electrical lamps to a source of electrical energy. One of the dual windings of the coil connected in one circuit creates an electromagnetic field and the other winding in the other circuit creates an electromagnetic field cancelling the first field. A warning device such as an indicator electrical bulb, for example, positioned proximate the operator of the vehicle, is connected to the source of electrical energy by a switching device disposed within the coil. The switching device comprises a pair of movable contact members normally maintained in open position and adapted to engage one another to connect the indicator bulb to the source of electrical energy in response to an electromagnetic field. Thus, when both lamps are operative the two electromagnetic fields cancel one another and the switching device remains open. When current flows through one winding of the coil changes due to a lamp failure, the electromagnetic field created by the remaining current flow closes the switching devices and thereby activates the warning device.

Electrical switch construction with shield

Abstract: An electrical switch construction having a movable switch blade carrying an electrical contact means to be moved into and out of electrical contact with another contact means of the switch construction so as to be adapted to make and break an electrical circuit, a shield being carried by the movable blade to prevent an electrical arc from impinging against a flexure point of the blade as the blade moves the contact means thereof out of contact with the other contact means to break the electrical circuit.

Electrical arrangement for use in teaching machine

Abstract: An electrical circuit arrangement for use in a teaching machine which has a keyboard unit to be operated by a student. A control signal in the circuit arrangement is either blocked or allowed to pass by a gate according to the condition of a comparator in which signals derived from switches representative of a keyboard and a store are compared.

Method and means for compensating a nonlinear response in an electrical circuit

Abstract: A FUNCTION GENERATOR IN COMBINATION WITH THE NET OIL COMPUTER OF U.S. PATENT NO. 3,385,108. THE CHANGE IN AMPLITUDE OF THE VOLTAGE PRODUCED FROM A CAPACITANCE DEVICE IS NONLINEAR WITH A CHANGE IN THE RATIO OF CONSTITUENTS OF A FLUID MIXTURE. THE VOLTAGE IS AMPLIFIED BY A CURVE-SHAPER CIRCUIT COMPRISED OF A VOLTAGE-DIVIDING ARRANGEMENT OF RESISTORS THROUGH WHICH THE VOLTAGE IS APPLIED TO BIAS THE BASES OF A PLURALITY OF TRANSISTORS. SLOPE POTENTIOMETERS ACTING THROUGH AN OPERATIONAL AMPLIFIER FOR INCREMENTS OF THE INPUT CURVE CONTROL THE RATIO BETWEEN THE VOLTAGE INPUT DUE TO THE CAPACITANCE DEVICE AND THE VOLTAGE OUTPUT OF THE AMPLIFIER. A COMPOSITE VOLTAGE OUTPUT SUBSTANTIALLY LINEAR WITH RESPECT TO THE RATIO OF CONSTITUENTS OF THE FLUID MIXTURE IS PRODUCED.

Transducer cleaning device

Abstract: A measuring instrument comprising, in a tube, a column of an electrically conductive liquid having a height which is responsive to the input parameter to be measured, an electrical circuit to transform the height of the liquid column into an electrical output value by measuring the voltage drop across the nonimmersed part of a current-carrying wire extending through the tube, and maintaining exact longterm performance of the wire by providing an application of heat thereto thereby preventing contamination of the wire which would otherwise cause nonlinearities between input and output values.

Measuring circuit including switching means for charging a capacitance with alternate polarities in each switching cycle

Abstract: An electrical circuit includes a condenser, resistor switching means and constant voltage source. One plate of the condenser is at constant voltage, the switching means connects the other plate alternately to a different constant voltage and to a constant voltage different from the latter. In one of the switch connecting conditions the resistor is switched in series with the condenser. The means voltage across the resistor while current passes through it can be used to measure the condenser capacity, resistor resistance, switching frequency or value of one constant voltage.

Electrical isolating transformer

Abstract: An isolating transformer is described for transmitting AC electrical power from a power-supply circuit at ground potential to a load circuit which is at DC high voltage; the transformer comprises a single transfer loop equipped with insulation which withstands the DC voltage, which loop is inductively coupled to a first of said electrical circuits by way of a magnetic circuit completely surrounding the said turn, and inductively coupled to the other of said electrical circuits and at DC potential thereof.

Electrical terminal connection

Abstract: Electrical circuitry for checking the operability of electrical connections and components of an electrical circuit and switch device adapted to energize a warning lamp in event of leakage in one fluid circuit of a two fluid circuit hydraulic brake circuit of a vehicle. Switch includes a housing having a piston movable to close switch in response to a predetermined pressure differential on opposite sides of piston. Electrical checking circuit passes through a molded electrical terminal connected at one end of one of the terminals of switch.