H - Electricity – 03 – B
Patent
H - Electricity
03
B
H03B 11/10 (2006.01) G01R 19/04 (2006.01) G01S 13/75 (2006.01) H03B 11/04 (2006.01)
Patent
CA 2012691
A circuit arrangement is described with the aid of which a control signal can be generated in dependence upon the occurrence of an extreme value of a sinusoidal oscillation. The circuit arrangement (10) includes a storage member (22) which is adapted to be charged via a diode (20) to one of the extreme values of the sinusoidal oscillation. A discharge path (26) for the storage member (22) is present, the time constant of which is so dimensioned that within the period duration of the sinusoidal oscillation an appreciable discharge of the storage member (22) takes place, A switch element (24) controllable by the charge voltage of the storage member (22) furnishes the control signal at its output (14) for the period of time during which the charge voltage at the storage member (22) is smaller than the extreme value of the sinusoidal oscillation. The circuit arrangement can be used in maintaining the oscillations of a resonance circuit stimulated to oscillate by means of a momentary HF carrier wave pulse.
Le montage produit un signal de commande en rapport avec l'occurence d'une valeur extrême d'oscillation sinusoïdale. Le montage (10) comprend un élément de stockage (22) adapté pour être chargé par l'intermédiaire d'une diode (20) à l'une des valeurs extrêmes de l'oscillation sinusoïdale. Un trajet de décharge (26) est fourni à l'élément de stockage, la constante de temps étant calculée pour produire pendant la période d'oscillation sinusoïdale une décharge importante de l'élément de stockage (22). Un élément de commutation (24), commandé par la tension de charge de l'élément de stockage (22), fournit le signal de commande à sa sortie (14) pendant la période au cours de laquelle la tension de charge présente aux bornes de l'élément de stockage (22) est inférieure à la valeur extrême de l'oscillation sinusoïdale. Le montage peut servir à entretenir les oscillations d'un circuit résonant, déclenché par l'impulsion d'onde porteuse HF momentanée.
Kaiser Ulrich
Steinhagen Wolfgang
Kaiser Ulrich
Kirby Eades Gale Baker
Steinhagen Wolfgang
Texas Instruments Deutschland Gmbh
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