Abstract: An improved binary signal discrimination system for demodulating FSK transmitted signals is disclosed which requires that both the mark or binary "1" signal frequency and the complementary of the space or binary "0" frequency be present for a mark signal to be recognized; and, conversely requires that both the space signal frequency and the complement of the mark signal frequency be present for a space signal to be recognized.

Abstract: A system for detecting changes in the electrical conductivity or capacitance of a fluid occasioned by the passage of a follower element is disclosed which includes a hollow fluid passage such as a flowmeter through which a fluid is caused to pass and is provided with at least one follower element of similar cross sectional shape to that of the passage and of a size slightly smaller than the passage which is free to move along the passage and has electrical conductance or capacitance properties substantially different from the fluid. At least one electrically-conductive sensor is disposed in the passage in electrical communication with the fluid. A detector circuit is utilized to sense changes in conductance or capacitance through said fluid in accordance with the presence of said follower element in the conductive path.

Abstract: An electrically conducting polymer is disclosed which includes poly(N-alkyl 3',3 carbazolyl) at least a portion of which is doped with a compatible charge transfer acceptor to provide p-type electrical conductivity, and in which the alkyl group is one selected from the group consisting of ethyl and methyl or a combination thereof.

Abstract: A mechanical apparatus for indicating watthour meter tampering of a typical single phase induction watthour meter which includes a base member, a plug-in mechanism mounting member and a cover glass fixed to the mechanism mounting member. The device includes an easily rupturable, normally glass, container juxtaposed the mechanism mounting member of the watthour meter and fixed through said mounting member to the meter base in a manner such that attempts to unplug the mounting member from the base will cause said container to rupture and thereby indicate meter tampering. The container may also be mounted next to the cover glass of the watthour meter and adhesively connected thereto in a manner such that movement of the cover glass relative to the mechanism mounting member results in the rupture of the container.

Abstract: An apparatus and method for determining the heating value of gaseous fuels is disclosed which include the novel means for establishing a mixture of air and the gaseous fuel of interest in known volumetric proportions. An electrochemical sensor is provided to sense the products of combustion of the precise volumetric mixture and the output of the sensor is indicative of the relation of the mixture to a stoichiometric mixture of fuel and air. This system is provided for adjusting the proportions of fuel and air in the mixture of interest in response to the output of the electrochemical sensor until the sensor indicates that the mixture of known proportions is substantially stoichiometric. The system is provided for determining the heating value of the fuel from a known relationship between the heating value of the constituents of the fuel and the amount of oxygen required for stoichiometric combustion.

Abstract: A pressure atomizing liquid fuel burner having an improved turndown ratio is disclosed along with a method of increasing the turndown ratio in such burners. The burner includes means for adding an amount of gas to the liquid fuel prior to the injection of the fuel which causes the liquid fuel to foam such that a liquid-gas foamed mixture is injected. The relative amounts of the aeration gas and the liquid fuel are controlled such that the injection velocity is maintained relatively constant over a wide turndown ratio in the liquid fuel. The aeration gas to be added to the liquid fuel may be preheated prior to the addition of the gas to the liquid fuel.

Abstract: An organic cathode depolarizer for a non-aqueous electrochemical cell system having an active metal anode, a cathode and a non-aqueous electrolyte is disclosed which is represented by the formula ##STR1## where R is a group selected from those consisting of alkyl, alkoxy, phenyl or phenoxy groups and where X.sub.1 and X.sub.2 are halogens.

Abstract: The method of making highly sensitive positive electron beam resists comprised of copolymers of methacrylic acid (MAA) and methacrylonitrile (MCN) is disclosed utilizing a prebaking step in which the copolymer resist in film form on the substrate is prebaked at a temperature below the decomposition temperature to improve the sensitivity of the resist. The positive electron resists produced in accordance with the present invention exhibit a high sensitivity, and high plasma etch resistance which makes them desirable for dry etching techniques in addition to other masking techniques which enable submicron resolution.

Abstract: A process for making highly sensitive positive electron beam resists comprised of copolymers of methacrylic acid (MAA) and methyl .alpha.-chloroacrylate (MCA) is disclosed in which a thin film of high molecular weight MAA/MCA copolymer is applied to a suitable substrate. Prior to exposure, the copolymer is prebaked at a temperature below the decomposition temperature to improve the sensitivity and resolution of the resist. The exposed resist is developed by spraying with a suitable solvent. The positive electron resists produced in accordance with the present invention exhibit a high sensitivity and good submicron resolution.

Abstract: A method of and apparatus for discriminator FSK signals using a tri-state phase detector is disclosed in which an input of known frequency is combined with the unknown FSK signal input and the output is fed to an integrator only after the minimum clearing time of the tri-state during each bit period. The integrator receives only the cleared signal for use in binary data signal determination thereby overcoming problems associated with lack of initial phase information at the tri-state phase detector.

Abstract: A method and apparatus for interconnecting one or more groups of primary electric cells in which cells in each group are further divided into two series-connected subgroups which, in twin, are connected to a three-conductor transmission system having a positive, a negtive and a neutral or return conductor. One subgroup of each group is connected between the negative terminal and the neutral and the other subgroup is connected between the positive terminal and the neutral such that the line to line voltage is twice that of the line to neutral voltage similar to a three-wire traditional AC supply system.

Abstract: An electrochemical cell with a lithium anode, an electrolyte solution comprising an electrolyte salt dissolved in sulfuryl chloride and a cathode doped with a macrocyclic complex of a transition metal such as CoPc, FePc, or (CoPc).sub.n.

Abstract: A low cost high frequency electronic dimming ballast for gas discharge lamps is disclosed which eliminates the need for external primary inductance or choke coils by employing leakage inductance of the transformer. The system is usable with either fluorescent or high intensity discharge lamps and alternate embodiments employ the push-pull or half-bridge inverters. Necessary leakage inductance and tuning capacitance are both located on the secondary of the transformer. Special auxiliary windings or capacitors are used to maintain necessary filament heating voltage during dimming of fluorescent lamps. A clamping circuit or auxiliary tuned circuit may be provided to prevent component damage due to over-voltage and over-current if a lamp is removed during operation of the system.

Abstract: An apparatus for power load-shedding is disclosed which has an auxiliary thermostat disposed in the conditioned space for controlling the CN-OFF cycling function of a space conditioning apparatus during a load-shedding interval. The auxiliary thermostat includes an external communication signal receiver and a transmitter for transmitting control signals to a space conditioner control which controls the connection of available power to the space conditioner. The thermostat utilized during normal operation of the space conditioning means is disconnected during the load-shedding interval. The auxiliary thermostat is adapted to be supplied with line voltage as by plugging into a conventional outlet.

Abstract: A system for minimizing synchronization errors in a phase-locked loop having a sequential phase detector for determining the phase difference between the output of the VCO of the phase-locked loop and a periodic control signal. Control circuitry is provided so that the control signal is enabled as an input to said sequential phase detector for a relatively short time window which comprises a small fraction of the control signal cycle period beginning just before a control signal is anticipated and the signal is disabled for the remainder of said control signal cycle period. Provision is made for the phase detector to process only the first control signal in any given enable time window. Additional circuitry is provided to disable the control circuitry when the phase locked loop is detected to be out of lock.

Abstract: An apparatus and method for determining the heating value of gaseous fuels is disclosed which include the novel means for establishing a mixture of air and the gaseous fuel of interest in known volumetric proportions. An electrochemical sensor is provided to sense the products of combustion of the precise volumetric mixture and the output of the sensor is indicative of the relation of the mixture to a stoichiometric mixture of fuel and air. This system is provided for adjusting the proportions of fuel and air in the mixture of interest in response to the output of the electrochemical sensor until the sensor indicates that the mixture of known proportions is substantially stoichiometric. The system is provided for determining the heating value of the fuel from a known relationship between the heating value of the constituents of the fuel and the amount of oxygen required for stoichiometric combustion.

Abstract: A method of fabricating a negative electron resist pattern for microcircuit is disclosed which combines electron beam resist exposure with dry plasma etch developing. The technique utilizes a coating of a barrier polymer over the negative electron resist film prior to exposure to the electron beam film to prevent vacuum sublimation of the constituents of the negative electron resist film.

Abstract: A low cost, high frequency, solid-state dimmable fluorescent ballast is disclosed which utilizes a resonant bridge inverter to provide high frequency sinusoidal power to the lamps. One embodiment of the invention includes auxiliary windings connected to the filaments of the lamps to be powered which utilize the inductance of the resonant bridge inductor coil to maintain the voltage across the filaments during dimming. A clamping circuit or auxiliary tuned circuit may be provided to prevent damage due to an over-voltage and over-current condition upon removal of a lamp during operation of the system. In an alternative embodiment, the auxiliary windings, are replaced by capacitors across each of the lamps to be powered. This also eliminates the need for the clamping circuit. If desired, a current splitting capacitance system may be used. Pulse width modulation of the inverter drive or variable AC or DC power supply input may be used to accomplish dimming.

Abstract: An electrochemical cell having a lithium anode, a thionyl chloride depolarizer and a sulphur dioxide passivation control agent which further includes having the pressure relieved to substantially reduce the internal pressure of the cell. The internal cell pressure is relieved by venting for sufficient time at an elevated temperature to reduce the internal cell pressure to less than five psi at room temperature, preferably by a plurality of venting cycles and a temperature ranging from room temperature to the elevated temperature. Normally, the elevated temperature ranges from at least 100.degree. F. to greater than 150.degree. F.

Abstract: A method and apparatus for determining the Wobbe Index of gaseous fuels is disclosed in which a mixture of sample fuel, the flow of which is monitored by pressure differential across a flowmeter, and a substantially constant amount of air is burned in the presence of an electrochemical sensor which exhibits a rapid change in output signal about a certain combustion product composition. The fuel content of the mixture is adjusted in response to the sensor output signal until the certain combustion product composition is attained and the Wobbe Index determined from a known relationship between the heating value of the fuel constituents and the amount of oxygen required for the combustion thereof at said certain combustion product composition and the pressure differential across the fuel flowmeter. Calibration of the system may be accomplished with standard gases.