Showing papers by "Alcatel-Lucent published in 1969"

PHOTOLUMINESCENCE OF OXYGEN IN ZnTe INTRODUCED BY ION IMPLANTATION.

Abstract: Photoluminescence has been observed from oxygen (O16) ions implanted into ZnTe. Doses of 5 × 1013 oxygen ions/cm2 were implanted at room temperature with energies between 50 and 250 keV. After annealing at 300–400°C in zinc vapor, the characteristic photoluminescence spectrum from the oxygen isoelectronic trap was observed. Care was taken to ensure that the spectrum was a direct result of the implanted oxygen by studying unimplanted and neon‐implanted samples. The anticipated isotope shift was observed in the spectrum for samples implanted with O18.

Telephone subset using modular construction

Abstract: In a table-type telephone subset all of the substantial individual parts such as the base plate, the housing, the cradle-switch, the number-switch, the electric bell or ringer and the bell domes, as well as the base plate of the number switch and the terminal box are provided with hooks shaped thereto, and with corresponding cutouts or indentations, and are assembled in accordance with the known "snap-in" technique.

Control knob with integral detent and stop mechanisms

Abstract: AN INTEGRAL INSTRUMENT KNOB AND DETENT DEVICE FOR CONTROLLING ROTARY SWITCHES AND LIKE DEVICES REQUIRING MULTIPLE DISCRETE ANGULAR POSITION SHAFT CONTROL. A SHAFT FOR THE DEVICE TO B CONTROLLED PROTRUDES THROUGH A PANEL, AND THE KNOB IS INSTALLED AND TIGHTENED THEREON. THE DETENT POSITIONS ARE FORMED BY A CONTOURED SURFACE INSIDE A CAVITY WITHIN THE BODY OF SAID KNOB. TWO CYLINDRICAL ROLLERS (OR BALLS) ARE PROVIDED, AND ARE HELD AGAINST THE CONTOURED SURFACE BY A LEAF SPRING MOUNTED ON A BASE ADAPTED FOR NON-MOVING MOUNTING ON THE PANEL. THE BALL OR ROLLER IS CONSTRAINED AGAINST ANY BUT RADIAL MOVEMENT. STOPS ARE PROVIDED BY A PAIR OF RINGS BUILT TO ENGAGE THE CONTOURED SURFACE, AND ARE THEREFORE ADJUSTABLE ROTATIONALLY IN INTEGRAL DETENT STEPS.

Arrangement for enabling an existing call to be temporarily interrupted

Abstract: The circuit enables an existing call to be interrupted without being cancelled. This is of particular significance for subscribers connected via their telephone sets to a dictating machine or a teaching machine for some length of time. According to another aspect the same interruption facilities are provided for interrupting a call to another subscriber after the call has lasted a predetermined, minimum time.

Multi-line telephone set with switching capability

Abstract: A four-wire multi-line telephone set for sending and receiving priority or non-priority calls which set includes a plurality of line termination circuits programmable by plug and socket connections for various modes of operation, whereby the lines connected to the set may be individually connected to a switching center either separately or in parallel with lines of other multi-line sets, or the lines may be individually connected directly to lines of other multi-line sets. A plurality of relays and associated logic circuits of the multi-line set establish separate transmit and receive paths for each line and conference connections between the lines connected to the set, or between lines of a plurality of multi-line sets.

Triode electron gun with positive grid and modular cathode

Abstract: Triode electron gun with positive control grid, with emitting cathode, and with acceleration anode, providing a concentration and emission of electrons directed along straight and parallel paths. Thus gun includes several elementary guns distributed around a single axis, the axes of the guns converging toward one and the same point on the axis situated at the entrance to an axial conical conduit drilled in the anode. The electrons produced in each elementary gun by an emitting pellet go through a concentrator and then through a conduit in alignment with the axis of each gun and perforated in a single thick grid. The invention can be applied in metallurgy for melting and heating.

TEST OF TIME-REVERSAL INVARIANCE AND MEASUREMENTS OF POSITRON AND NEUTRINO ASYMMETRIES IN POLARIZED $sup 19$Ne BETA DECAY.

Abstract: Author(s): Calaprice, Frank P.; Commins, Eugene D.; Gibbs, Hyatt M.; Wick, Gerald L.; Dobson, David A.

Étude à l'aide d'hypersons du spectre de résonance électronique du Fe2+ dans MgO

Abstract: Le spectre R.P.E. du Fe2+ dans MgO est etudie a l'aide de la saturation de la resonance par les hypersons. L'excellent rapport signal sur bruit obtenu avec cette technique permet d'etudier attentivement les formes de raie. Un calcul, sur un modele simple, explique qualitativement certains traits caracteristiques des resultats. L'evolution angulaire de la largeur de la raie ΔM = 1 est mal expliquee. La presence dans le spectre obtenu par cette methode d'anomalies est analysee par l'etude de deux processus : transitions a double quanta et saturation par les hypersons d'une autre transition que celle observee en resonance. Les conclusions de cette analyse sont comparees aux resultats experimentaux. Enfin, l'evolution du signal en fonction de l'ecart entre la frequence de resonance et la frequence des hypersons est discutee.

Arrangement to supervise the operation of coder and decoder circuits in a pcm-tdm system

Abstract: The coder and decoder of a terminal are placed in a closed loop excluded from the normal transmission lines during sync time and/or signalling time. During this time a low frequency test signal is applied to the coder and a comparison circuit. By gate means the output of the coder is directly coupled to the decoder of the same terminal. The output of the decoder is coupled to the comparison circuit. The comparison circuit will produce a fault indication when the difference between the two input signals applied thereto exceeds a predetermined amount. Continuous supervision over the whole range of the coder and decoder, without influencing the intelligence paths, is possible provided the waveform and frequency of the test signal is properly chosen.

INTERPRETATION OF EMERGENT STAR PATTERN DISTRIBUTIONS FOR MeV PROTONS TRANSMITTED THROUGH SINGLE CRYSTALS.

Abstract: The emergent distributions of protons transmitted through thin single crystals parallel to low index directions display characteristics consistent with the general notions of particle channeling Certain aspects of these patterns, however, have been used as evidence for the desirability of a wave or diffraction description of the phenomena In this paper we present detailed energy and intensity measurements of the phenomena in question and show that they can be understood in terms of the classical channeling picture

Portable helium leak detector

Abstract: The device concerns a portable helium leak detector wherein a first housing has the analyzer cell, the vacuum producing units and a vacuum connection arrangement to feed gas from the apparatus or arrangement that is being tested for leaks. If the helium gas to the unit being tested leaks and is fed to the analyzer cell, it will determine such to provide a signal. The second housing has the electronic portions, the indicating means and the control switches, such being connected to the first housing by an electrical cable connection. The second housing is separate from the first housing and is adapted to be placed close to the operators and remote from the first housing so as to be accessible to the operators so they can read the indicators and can operate the control switches.

Mask identification systems

Abstract: A mask identification system according to which a mask indication is originated having three parts: one first part specifically meant to indicate the length of a slice; a second part specifically meant to indicate the origin of this slice; a third part which will either complete the first part, in order to characterize the lengths of larger slices (the value which characterizes the origin of the slice being then necessarily small), or it will complete the second part, in order to characterize the origins of upper ranks (the value characterizing the length of the slice being then necessarily small), so that most of the values that the mask indication take up in its entirety are effectively utilized and the number of digits making up this indication are limited to a minimum.

Key telephone systems using pushbutton or rotary dials

Abstract: A key telephone system is made for operation with either pushbutton or rotary dial equipment. Initially, digital signals are sent to one of two receivers which responds exclusively to pushbutton or rotary dials, respectively. These two receivers are connected to a common control circuit which supervises ringing and provides answer supervision to operate the key system, per se.

Device for accurate positioning of movable members on a machine tool

Abstract: The invention relates to a device for accurate positioning of movable members. To that effect, the member is driven into a position with accurate coordinates, the path of the member, being compounded in several elements whereby the first of them can be run at a maximum speed and the following at lower and lower speeds, so that when the displacement stops, the member occupies the accurate coordinates, and the quick and accurate positioning of the member is actuated according to a predetermined program.

Nuclear radiation monitoring device wherein a detector, a remote source and a measuring device are connected by a single cable

Abstract: A nuclear radiation monitoring device wherein a detector and a remote source and measuring device are coupled by a single coaxial cable via a resistor. The detector includes a GeigerMuller counter tube, a low-to-high D.C. voltage converter, a pulse shaper and a monostable pulse repeater. The remote source supplies a low D.C. voltage which is converted to a high D.C. voltage for use by the detector. Signal pulses from the detector reach the remote measuring device substantially without alteration due to the aforementioned resistor which is chosen to have an impedance equal to the characteristic impedance of the coaxial cable.

Coin-operated apparatus and signalling system

Abstract: A telephone pay station central system in which answering of a call originated at the pay station causes the generation of a signal from the central office to the pay station to connect the coil collection and value-indicating network to the line loop. A coin collection relay is thereby energized to collect a coin and to cause a pulse to be returned to the central office indicating that the call can continue. Periodic back-and-forth signalling continues as necessary during the conversation period without disrupting the conversation.

Circuit arrangement for regulating the transmission and reception reference equivalent of a subscriber station in a telephone system

Abstract: Nonlinear networks in the form of semiconductor switches are employed for separate regulation of reception and transmission in a telephone system to compensate for variations in attenuation. Control of the transistors is made proportional to the voltage drop across separate resistors in the feed loop.

Selection system for circuits or electric equipment

Abstract: A switching network has three cascaded stages, each stage including a number of sections. Means associated with the secondary stage tests the availability of links in the primary and tertiary stages. When a match of idle primary and tertiary links is found, in association with an idle secondary link, the network operates to complete a path through all three stages.

New Experimental Evidence for Spin Fluctuations in Strongly Paramagnetic Alloys

Abstract: According to theoretical predictions, the entropy of spin fluctuations in a paramagnetic metal with Stoner susceptibility enhancement factor S is (omitting numerical coefficients) ΔS/S0≃lnS+S3T2ln (T/Ts), where S0 is the entropy of the electrons without spin fluctuations and Ts=TFermi/S. The first term gives rise to an enhancement of the specific heat and the thermal expansion at absolute zero. The second term should cause a low‐temperature anomaly in both properties. The enhancement of the specific heat has been reported in NiRh and Pd:Ni alloys, and the NiRh system also shows low‐temperature specific‐heat anomalies. The thermal expansion α is more sensitive than the specific heat C to each of these contributions, approximately in the ratio Δα/α0/ΔCv/Cv0≃1/ γ0∂lnS/∂lnV, where γ0 is the electronic Gruneisen parameter without spin fluctuations. Our magnetostriction data for Pd:Ni and NiRh alloys determines ∂ lnS/∂ lnV, which is proportional to S in accordance with the Stoner expression for the susceptibili...

Article-conveying device

Abstract: AN ARTICLE-CONVEYING DEVICE FOR PROVIDING DELAY IN THE CONVEYANCE OF AN ARTICLE WHEN NECESSARY WITHOUT INTERRUPTING THE SPEED OF THE ARTICLE. THE INVENTION PROVIDES A REGULAR CIRCULAR PATH AND AN AUXILIARY CIRCULAR DELAY PATH TANGENT THERETO IN FIG. 8 FORM WITH MEANS TO SELECT WHICH PATH AN ARTICLE IS TO FOLLOW. DETECTION OF THE PRESENCE OF ARTICLES IN EITHER PATH IS BY PHOTOCELLS WHICH RELAY INFORMATION TO A CENTRAL CONTROL WHICH CONTROLS THE PATH-SELECTION MEANS. AN ARTICLE WHICH IS TO DELAYED IS TAKEN OUT OF THE REGULAR PATH AND GUIDED INTO THE AUXILIARY PATH TO REMAIN THEREIN FOR AT LEAST ONE REVOLUTION OF THE PATH, AND IS RETURNED TO CONTINUE ITS JOURNEY IN THE REGULAR PATH WHENEVER THE CENTRAL CONTROL SO DIRECTS. D R A W I N G

Pulse-width discriminator having conduction controlled means

Abstract: A pulse-width discriminator providing a very steep discriminator characteristic. The width modulated input pulses limited to a constant amplitude are rectified and applied to an RC time constant circuit prior to being applied to a transistor whose conduction is controlled by resultant linear sawtooth signals whose duration are equal to the duration of the input pulses. The time constant of the RC circuit, the bias potential applied to the RC circuit and the bias potential applied to the transistor, by means of a Zener diode coupled between the RC circuit and base of the transistor, are so selected that the transistor is blocked for pulse widths below timin, momentarily unblocked for pulse widths between timax and timin to pass pulses having amplitudes increasing linearly in the negative direction as the pulse width increases, and saturated for pulse width above timax to pass pulses having a negative going constant maximum amplitude. The discriminator output voltage is obtained by peak rectification of the pulses passed by the transistor. In another disclosed embodiment, the discriminator output voltage is passed through a low pass filter to provide the bias potential coupled to the RC circuit.

Solid electrolytic capacitor having anode bodies combined in an integral unit

Abstract: A capacitor includes two metallic anode bodies positioned close together and having a dielectric oxide coating thereon, a layer of semiconducting material over the oxide coating and a conducting layer over the semiconducting material, the semiconducting layer being between the bodies and the conducting layer at least partially surrounding the bodies to form an integral structure.

Telegraph line scanning system

Abstract: A system for detecting transitions and reconstituting characters for slow telegraph lines. Normally, a character is reconstituted at the receiving of the ''''start'''' of next character. Therefore a ''''cam function'''' has been provided, which reviews one by one the line memories at intervals longer than the duration of a character, so that any character which has been completely received is processed regardless of the lack of a next character.