... Descriptors : *Switching circuits, *Patents, Relays, Logic circuits, Flip flop circuits, Electronic switching, Electronic switches. ...

... Accession Number : ADD874872. Title : DESIGN AND DEVELOPMENT OF A BISTABLE RELAY FOR TELEPHONE SWITCHING SYSTEMS. ...

... MAGNETIC MATERIALS, PIEZOELECTRIC CRYSTALS, QUARTZ, RELAYS, SWITCHING CIRCUITS, ELECTRONIC SWITCHES, ELECTRIC ...

... Typical circuits have been designed that will perform the functions of con ventional switches, relays and circuit breakers, including switching and ...

one and two are closed. Switch two is open if the relay is on. Finally, the relay is on if switches 1 and 3 are closed. When switch 1 is closed, the relay becomes activated, switch 2 will open indirect effect (closing the relay, ...

tion might include orientation of solar cookers, furnaces, switch 50, such as a switching transistor or a relay, is and other terrestrial devices which ...

... operator performance for restart including a push button switch for ... Electric switches, *Clutches, *Punching machines, Push buttons, Electric relays ...

A computer-controlled relay matrix for switching analog signal lines was installed in the test data processing facility. This relay matrix, which replaces the existing analog switching system, offers increased reliability, manual override capabilities for...

... ELECTRIC POWER PRODUCTION, ELECTRIC RELAYS, GENERATORS ... SEMICONDUCTORS, SWITCHING CIRCUITS, TRANSMISSION LINES. ...

... CAPACITORS, CIRCUITS, RELAYS, SWITCHING CIRCUITS, INTEGRATED CIRCUITS, ELECTRONIC EQUIPMENT, SEMICONDUCTOR DEVICES ...

... contained the relays that switched the various ... in- cluded two barometric switches (threshold at ... electronics circuitry would override the series switch. ...

Sixteen papers are included. Topics include environmental tests for dry-circuit relay contacts and socket terminals; enhancing reliability of dry reed relays; use of microcomputer control to test and diagnose relays; assurance test method for electromagnetic relays using microprocessor; gold sealed ...

A non-latching relay switch assembly which includes a coil section and a switch or contact section. The coil section includes a permanent magnet and an electromagnet. The respective sections are arranged in separate locations or cavities in the assembly. The switch has a "normal" position and is selectively ...

A non-latching relay switch assembly is described which includes a coil section and a switch or contact section. The coil section includes a permanent magnet and an electromagnet. The respective sections are arranged in separate locations or cavities in the assembly. The switch has a normal' position and ...

This specification covers the general requirements for electromagnetic, hermetically sealed relays for use in electronic and communication-type equipment. These relays are designed to operate over the full range from low level to power switching with cont...

Radiation effects on electro-mechanical relays, used in 1950s. This type relay has been replaced by electronic switching circuits using semiconductor technology & decision. Radiation effects are well known; system vulnerability levels not stated.

...and 1211.12. (c) A mechanical switch or a relay used in an entrapment protection... (d) In the event malfunction of a switch or relay (open or short) described...shall become inoperative at the end of the opening or closing operation, the door...

has the characteristics of a bi-stable relay. ..... An Attachment to the Final Report, "Solid State Bistable Power. Switch Study" (August, 1968), ...

... (Testing of Some Switches/Relays for Application to an ESD Simulation Circuit) ... 2) Reed Switches (10 KV, WlO2HVX-2, Magnecraft Inc.) ... ...

... SOLUTION: Do not place current interrupting elements (eg switches, relays, circuit breakers, fuses) in ground return paths. ...

A switching system for switching on and off heating and air conditioning units in an environmental control system. The switching system includes a thermostat and a relay conductively coupled to the thermostat. The relay has a contact, which is responsive to a change signal for changing its ...

... variable resistance of the contact mechanim of relay of layered switch ... layers. ... r.tine operations and for investigating the lower layer of atmosphere of ...

... POWER SUPPLIES, FLIGHT SIMULATORS, MONITORS, GATES(CIRCUITS), ELECTRIC RELAYS, CURRENT LIMITERS, CIRCUIT BREAKERS ...

... Abstract : The components of printed circuits discussed are circuit breakers, fuses and fuse holders, current limiters, connectors, switches, relays ...

... control, protection and power interlocks presently implemented on the aircraft by electromechanical devices (switches, circuit breakers and relays). ...

A latching relay switch assembly which includes a coil section and a switch or contact section. The coil section includes at least one permanent magnet and at least one electromagnet. The respective sections are, generally, arranged in separate locations or cavities in the assembly. The switch is latched by a ...

A latching relay switch assembly is described which includes a coil section and a switch or contact section. The coil section includes at least one permanent magnet and at least one electromagnet. The respective sections are, generally, arranged in separate locations or cavities in the assembly. The switch is ...

An automatically resetting battery charging circuit is described in which the temperature of the battery is sensed by a temperature-responsive switch to control the charging of the battery between a fast charging rate and a trickle charging rate. Two current paths are provided between a charging current source and one terminal of the battery. The temperature-responsive ...

A primary oil burner safety control and intermittent ignition system is disclosed for initiating and supervising the combustion of fuel oil in furnaces, the system including thermostatic switch means controlling the energization of a relay having contacts controlling the energization of an oil burner, means constantly monitoring the state of the ...

A compact switch/relay with excellent high frequency performance at around 2GHz is developed by adopting a novel non-linear spring structure and high frequency signal line structure. The non-linear spring system applied to an electrostatic actuator of RF MEMS switch/relay increases restoration force for switching reliability. The ...

The low power as well as the high power applications of superconductivity are increasing. Both are expected to benefit from the high current relay switch developed by the authors. In contrast to previous 'switching' devices, the new switch has a true 'ope...

A speed changer is described for changing a speed change gear of a tractor shovel comprising: a first speed solenoid valve means for actuating a first speed clutch adapted to be connected to the speed change gear; a second speed solenoid valve for actuating a second speed clutch adapted to be connected to the speed change gear; a switch unit, the unit including a first speed ...

... The relays with NPL showed improved lifetime, from approximately 2x for cold-switched conditions, up to nearly 10x for high power hot-switched ...

This patent describes a photo voltaic panel (PVP) battery charging device, comprising: a PVP having positive and negative terminals; a relay coil coupled across the positive and negative terminals of the PVP; a variable resistor coupled across the positive and negative terminals of the PVP in series with the relay coil; a positive and a negative battery ...

The seven sections in this volume discuss the following subjects: dynamic performance of relays, comparison of induced voltage and coil current of a relay with a special coil, coil current and induced voltage using a search coil on the armature end, transient flux and coil current, changing discharge resistance and predicting release time, ...

Controls for lights in a room with a swinging door for entry into and exit from the room, providing a main circuit for the lights, including a main switch normally closed to close the circuit, a time delay relay adapted, when energized, to hold the main switch in closed position for a preset time period and then shift the same to its ...

load (25 amps, three phase, 115 Vac). This relay is used to switch 5 amps (i.e., 20 percent of ... 2 There are two silver-cadmium oxide contacts per phase. ...

The patent application relates to a programmer for selectively controlling magnetic latching relays that overcomes the disadvantages of the prior switching methods. In response to a control signal, a first monostable multivibrator enables output-driving d...

A unit was designed to control a mercury-wetted contact relay. The contacts of the relay were used to switch a noninductive resistive load on and off a regulated power supply. If an oscilloscope is connected to the output terminals of the power supply, th...

Performance and reliability of dynamic physical contacts between two solid surfaces has challenged technologists from pre-Hellenistic pulleys and Da Vinci mechanisms for transmission of mechanical energy to modern switches and relays for transmission of e...

be used wherever appropriate The velocity of electromagnetic signal propagation along a communications switching that underlies both frame relay and ATM. [3] j) Discuss the purpose of the LAN Emulation Server) Compare the use of ISDN and frame relay networks for the transmission of isochronous signals

A fuel level meter for vehicles is described including an electrical measuring device comprising: a voltage source and a potentiometer resistor. The resistor comprises two ends connected between the voltage source and a movable contact, connected to a float disposed in a fuel tank, such that the position of the float is dependent on the level of fuel in the tank; a shuntable series resistance ...

This patent describes an electric vehicle driven by a DC motor. The vehicle has a field winding, an electric resistance element in circuit with the field winding, a switch in the circuit operative when closed to place. The element in parallel with the field winding weakens the field and increases potential motor speed. Also are relay means for operating ...

A defrost control system is described providing first and second defrost cycles wherein a timing means includes power driven cam means and first, second, third and fourth electrical switches opening and closing in response to the cam means. The first and fourth electrical switches are adapted to be selectively electrically coupled to a ...

A circuit is described for a motorized vehicle having an ignition switch connected to a power source, such as a battery. The circuit controls the application of power from the power source to an electric device, such as a motor for driving an electric window or sun roof. It comprises: a relay having relay contacts and a driving coil, ...

An industrial control system consists of sensing devices, decision- making devices, and power output devices. Relays have traditionally been used as the decision-making components. A complete line of magnetic amplifier type devices is now available for use to replace relays as a decision-making system. These static switching ...

The device is designed to provide switching control of a 32-volt DC, 250-watt incandescent lamp using a 12-volt DC control voltage.

seal faiiurc, migration of contaminating partic]cs, relay an(i switch cbattcr an ~i ...... dcviccs, and (b) it may bc cxpcnsivc (0 rcp]acc the activatc(i ...

The effects of radiation on electronic components are discussed. Those covered include: semiconductors, resistors, capacitors, relays, switches, and magnets. A table of radiation tolerance limits is included. (M.C.G.)

... and the switching relays provided the flasher unit with intensit" outputs of i perctLat (IS' ed) and 9 ... One pilot said "under the weather conditions.. ...

A remote control system was designed for the different signals of a spectrometer. The system can control relay switches. The construction (hardware and software) as well as the operation of the remote control system are described.

HH-Jr customer equipment may be operated from Orbiter power or from internal customer batteries with power switched by carrier relays in a manner similar to ...

Ground fault protection at or near the PV array 1 * The DC disconnect switch between the PV array and the inverter * The inverter DC breaker * The inverter relay (This is an...

A switch and relay circuit is described for protection of calutrons. By means of this arrangement no arc can be established in the arc chamber unless cooling water flow is established. (T.R.H.)

ABS>A method is suggested for the experimental determination of statistical reliability of a radioactive relay with hysteresis, working at a counting speed corresponding to the maximum probability of a false switching. The method permits the tentative determination of statistical reliability at other counting speeds as well. The statistical ...

... Relay standards; Relay testing; Relay specifications; Relay design; Relay contacts; Directory of relay manufacturers; and Bibliography on relays. ...

The feasibility study, design, manufacture, integration and measured performance of a redundant, 8 by 8 Reconfiguration Switch Matrix (RSM) at 5.5 GHz for use on-board the data Relay Satellite Systems (DRSS) are presented. The RSM includes the Radio Frequ...

System requirements for the replacement of electromechanical relays in space division PABx switching networks by monolithic integrated semiconductor circuits were studied. Based on these results, balanced 5 x 2 crosspoint arrays combined with a matrix con...

The paper describes a developmental and experimental program leading to the design rationalization and reliability characterization of a miniature Form 'C' dry reed switch capsule which performs a true transfer function without the use of auxiliary biasin...

ESSA (Electronic Switching Spherical Array) is an antenna system conceived, developed and qualified for linking satellite data transmissions with NASA's tracking and data relay satellites (TDRSS) and tracking and data acquisition satellites (TDAS). ESSA f...

Three types of CAMAC aloganalog signal commutators are described. Bipolar and field transistors are used as switching units, along with electromagnetic relays with magnito-controlled contacts. Commutators are intended for switching slowly changing voltage...

Seven integrated circuits and a voltage regulator are combined with twelve reed relays to allow the ASCII encoded numerals 0 through 9 and characters ''.'' and R or S to momentarily close switches to an applications device, simulating keypad switch closur...

Aspirin (ASA) triggers a switch in the biosynthesis of lipid mediators, inhibiting prostanoid production and initiating 15-epi-lipoxin generation, through the acetylation of cyclooxygenase II.

Switching theory was developed as a theory for relay circuits in early days. In September 1935 Akira Nakashima of NEC delivered his invited speech on synthesis theory of relay networks including de Morgan�s theorem at the technical meeting of the Telegraph and Telephone Society in Tokyo. Since 1934 he had published his ideas in a ...

The recently observed in-flight capture of keV antiprotons and protons in a Penning trap requires that the -3-kV potentials on electrodes of a Penning trap near 4.2 K be switched on and off with switching times less than 20 ns. These rapidly switched potentials are applied via transmission lines which are not terminated at the trap, ...

In an exemplary embodiment, an exposure time selector and a mas relay are connected to a computer which controls the x-ray tube current according to the selected mas product and the freely selected value of exposure time. For example, the exposure time may be set to any of a range of analog values for determining exposure time, while the mas relay is ...

solid state power switching devices: solid-state relays (SSR), solid-state power ... power modules, analog multiplexer modules, solid-state relays and voltage ...... Manufacturers of satellites, satellite launch vehicles, and tactical weapon ...

Using the property of dynamic complementary suppression modulated transmission of bacteriorhodopsin film, we propose and demonstrate an all-optical time-delay relay in an incoherent light system. The relay can last for a certain amount of time after the switch function of turn off (or turn on) is activated. Furthermore, the delay time ...

Using the property of dynamic complementary suppression modulated transmission of bacteriorhodopsin film, we propose and demonstrate an all-optical time-delay relay in an incoherent light system. The relay can last for a certain amount of time after the switch function of turn off (or turn on) is activated. Furthermore, the delay time ...

Flashover of the air gap on the switch contacts leads at power substations to propagation of a traveling electromagnetic wave, which arises in the secondary noise circuits. The noise pulses may have significant levels and may reach the relay input. According to data of the time of attenuation of the transient voltages usually lies in the 4 to 20 ...

Targeted therapeutic intervention in receptor-ligand interactions of p53 mediated tumor suppression can impact progression of disease, aging, and variation in genetic expression. Here, we conducted a number of molecular simulations, based on structures of p53 in complex with its transcriptional co-activating CBP bromodomain, determined by NMR spectroscopy, to investigate the energetics of the ...

VI time responses of a conventional electromagnetic relay during breaking contact operations were measured. In a conventional switching circuit, unstable contact resistance, irregular bouncing, and poor reproducibility were confirmed. Using a transient current switch circuit and two sharpened contact electrodes, bouncing during a ...