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TELEPHONES GRAMMONT SOC D
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TELEPHONES GRAMMONT SOC D
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Schaltungsanordnung zur Erzielung eines moeglichst frequenzunabhaengigen UEbertragungsmasses und eines frequenzunabhaengigen und reellen Scheinwiderstandes eines UEbertragungsgliedes
Schaltanordnung zur Beseitigung der akustischen Rueckkopplung zwischen in ihrer gegenseitigen Lage festgelegtem Mikrophon und Lautsprecher, insbesondere bei Konferenztelefonieanlagen