Abstract: The invention relates to solid gas generator fuel compositions (gas producing mixtures), comprising: (A) nitroguanidine or nitroguanidine stabilised with 0.1 to 0.5% nitroguanidinium hydrogen sulphate and nitroguanidinium nitrate as fuel; (B) an oxidising agent selected from the group comprising alkali and earth alkali nitrates, chlorates and perchlorates, ammonium nitrate and perchlorate, copper compounds with oxidising properties and mixtures thereof; (C) a stabiliser selected from the group comprising hydrophobic SiO2, inorganic and organic acids and mixtures thereof; and optionally (D) a combustion stabiliser or moderator and ash former or trap and mixtures thereof. The above gas generator fuel compositions comprise an improved shelf-life under hot storage conditions at 110° C.

Abstract: The invention relates to a subscriber line terminal and a method for fault detection in the power supply having a multiplicity of subscriber line modules and at least one power supply. The subscriber line modules are supplied with reference to at least one voltage level used in the electronic system via at least two useful voltage bus lines, and the at least two useful voltage bus line are fed by at least two parallel-connected power supply units which simultaneously supply the two useful voltage bus lines in each case, at least one feedback of the voltage from the useful voltage bus line being provided per power supply unit.

Abstract: A pyrotechnical gas generator, preferably for an airbag system, consists of a housing, an ignition unit, a gas generating mixture, a conically shaped cooling system (or cooling and filtering system) tapering in the discharge direction, a gas generating mixture disposed within the cooling system. The housing is preferably one piece and tubular. The combustion gases are discharged through exit ports arranged radially, axially or diagonally on a side of the housing opposite the ignition unit. The cooling system (or cooling and filtering system) separates the gas generator into a combustion chamber, which contains the gas generating mixture and in which a gas is generated by burning the gas generating mixture, and an outflow chamber, through which the cooled (and optionally filtered) gas can flow and the exit through the exit ports.

Abstract: A circuit arrangement for auxiliary voltage production in which auxiliary voltage is produced essentially independently from a directly regulated output voltage of a transformer with the aid of a reverse voltage which is applied to an output rectifier.

Abstract: A converter apparatus that is operated with a pulse-width modulated drive signal with constant in the normal operating case and is operated with a frequency-modulated drive signal with constant pulse width in case of overload or, respectively, light load.

Abstract: Gas generating propellants with flame temperatures below 1400.degree. K. (isobaric) based on duroplastic and/or thermoplastic binders containing up to 80% by weight of triaminoguanidine nitrate as the chief gas generating component which can be cast or pressed into shapes having good chemical stability and excellent mechanical properties useful in propulsion engines and energy yielding systems.