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Navarro Aguilar Pedro
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Navarro Aguilar Pedro
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Priority to ES277697ApriorityCriticalpatent/ES277697A1/en
Publication of ES277697A1publicationCriticalpatent/ES277697A1/en
Current rectifier device for indoor telephony, characterized by comprising a transformer with primary connected to the general network, and several secondary output, connectable to convenience according to the characteristics of the telephones used and the amplitude of the telephone line inside, going both phases from the secondary of the transformer, connected with a selenium rectifier, with outputs from it connected to a filter for elimination of the half-period, having then connected in series in one of the phases, a shock coil that also acts as a filter, and later, a double filter between phases, for the output in direct current, connectable to the telephony network. (Machine-translation by Google Translate, not legally binding)
ES277697A1962-05-261962-05-26Current rectifier apparatus for internal telephony (Machine-translation by Google Translate, not legally binding)
ExpiredES277697A1
(en)
Device to obtain continuous current rectified to twelve waves starting from alternate three-phase to fixed voltage (Machine-translation by Google Translate, not legally binding)
A telemagnetofºnico device for receiving and registering telephone calls, and also used as a dictaphon (Machine-translation by Google Translate, not legally binding)