Abstract:
Servo-control loop with an outside frequency affecting an oscillator for regulating by means of the voltage (VCO) formed by logic circuits operating in a wide band and comprising a means for adjusting the phase, giving a standard phase shift throughout the band.
Abstract:
Multiple sonde of the Fourier transformation type. The signals which are representative of the radiation received by detectors, coming from an irradiated object, by means of a coherent radiation, are sampled at two instants separated by a quarter of a period and the samples constitute the true and imaginary parts of the function to which the Fourier transformtion is applied, according to the coordinates of the detectors.
Abstract:
Method consisting in cutting out P and N semiconductor rods from P blocks and N blocks and in assembling them in series to form a thermoelectric module. Industrial manufacturing consists in welding by collectively dipping the assembly of rods after having inserted insulating sheets extending beyond the level of the rods at the places where it is not necessary to set up a connection bridge.
Abstract:
Integrator comprising an operational amplifier having an input (E1)(-) and an input (E2)(+), and an output (S), with a resistance having a value of (R1) connected up between the input (E2) and the earth, a capacitor shunted by a resistor having an ohmic value of (R2) between the output (S) and the ihput (E1), the input voltage being applied to the input (E1) through a resistor having a value of R1), characterized in that the output (S) is connected up to the input (E2) by a network comprising two diodes connected up head to tail in parallel, in series with a resistor having an ohmic value equal to (R2).
Abstract:
Device for effecting polychromatic traces of light, more particularly on the screen of a polychromatic cathode tube, comprising means for regulating the number of repeats of a same trace as a function of its color, in order to regulate the light flux produced by a trace according to its color.
Abstract:
A dialling discriminator which may be connected to a receiver unit and which is adapted to distinguish between incoming decimal and arrythmic dialling signals. A first polarity sampling is made 130ms after the receipt of an incoming signal. If the sample is negative then decimal dialling is indicated since arrythmic dialling, by definition, is always positive at this point. If the sample is positive, however, no decision can be made and a second polarity sample is taken at 160ms. If this second sample is negative then arrythmic dialling is indicated, since same is always negative at this point while decimal dialling is always positive.
Abstract:
A synchronizing unit for a time switching apparatus employs respective synchronizing elements for synchronizing communication time channels of multiplexed data signals. Both frame and multiframe sync recognition detection is effected on the basis of predetermined synchronizing time channels allotted within a frame. Speech channel and data signaling channel synchronization are also carried out on the basis of channel coding, so as to totally synchronize the data signals with the local clock of the time switching apparatus.
Abstract:
A coin collecting and counting device includes a turntable which directs coins by centrifugal force from a coin inlet to a coin path leading from the turntable periphery to respective coin outlets having coin validators for each type of coin along the path of coin movement.
Abstract:
Pumping assembly in which the condensation elements for preventing oil from entering the enclosure to be emptied consists of a baffle cooled by conduction coming from a cold source and by a liquid nitrogen trap in communication with a liquid nitrogen receptacle. The cold source of the baffle is incorporated in the wall of the pump body; the liquid nitrogen receptacle is fixed under the pump cover, so that the assembly is easy to dismantle and to clean.
Abstract:
The invention concerns the field of point-to-point communications in a network of stations equipped for selective calling. It concerns a coding system partially of the numerical types, partially of the analogical type, combined with a device for enabling maximum output at the transmission level. The main applications are in mobile communications, in particular, between airplanes.