ES2007618A6 - Perfeccionamientos en sistemas de porteros electronicos. - Google Patents

Perfeccionamientos en sistemas de porteros electronicos.

Info

Publication number
ES2007618A6
ES2007618A6 ES8701779A ES8701779A ES2007618A6 ES 2007618 A6 ES2007618 A6 ES 2007618A6 ES 8701779 A ES8701779 A ES 8701779A ES 8701779 A ES8701779 A ES 8701779A ES 2007618 A6 ES2007618 A6 ES 2007618A6
Authority
ES
Spain
Prior art keywords
translation
legally binding
google translate
machine
telephone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES8701779A
Other languages
English (en)
Inventor
Martinez Jose Fernando Maestre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fermax Electronica SA
Original Assignee
Fermax Electronica SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fermax Electronica SA filed Critical Fermax Electronica SA
Priority to ES8701779A priority Critical patent/ES2007618A6/es
Publication of ES2007618A6 publication Critical patent/ES2007618A6/es
Expired legal-status Critical Current

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  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

PERFECCIONAMIENTOS EN SISTEMAS DE PORTEROS ELECTRONICOS, CONSISTENTES EN UTILIZACION DE TELEFONOS CON MICROFONOS DE ALTA CALIDAD Y CON CIRCUITO, EN EL QUE EXISTE UN TIRISTOR QUE AL SER CEBADO DURANTE LA SEÑAL DE LLAMADA REPRODUCE LA SEÑAL EN EL ALTAVOZ. SE EMPLEA UNA PLACA DE CALLE CON TRANSISTOR PREAMPLIFICADOR Y SISTEMA DE PROTECCION PARA EVITAR PUEDAN INDUCIRSE TENSIONES SUPERIORES A LAS QUE SOPORTA EL TRANSITOR. UNA CENTRAL ELECTRONICA PROPORCIONA ALIMENTACION Y AMPLIFICACION AL SISTEMA CON ALIMENTACION POR MEDIO DE TRANSFORMADOR DE DOBLE SECUNDARIO, UNA BATERIA Y SISTEMA DE ADAPTAR ESTA BATERIA A LA ALIMENTACION DE FORMA AUTOMATICA. LA AMPLIFICACION SE OBTIENE MEDIANTE ESPECIALES CIRCUITOS INTEGRADOS CON UN HILO COMUN A TODA INSTALACION Y HILO POR TELEFONO HASTA LA PLACA EXTERIOR. EXISTE APERTURA DE PUERTA PROTEGIDA Y TEMPORIZADAS, SOLO UN TELEFONO PUEDE TENER CANAL DE CONVERSACION. PROTECCION DEL SISTEMA ANTE DESCOLGADO DE TELEFONOS MEDIANTE INHIBICION DEL DESCOLGADO AL EFECTUAR UNA LLAMADA.
ES8701779A 1987-06-17 1987-06-17 Perfeccionamientos en sistemas de porteros electronicos. Expired ES2007618A6 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES8701779A ES2007618A6 (es) 1987-06-17 1987-06-17 Perfeccionamientos en sistemas de porteros electronicos.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES8701779A ES2007618A6 (es) 1987-06-17 1987-06-17 Perfeccionamientos en sistemas de porteros electronicos.

Publications (1)

Publication Number Publication Date
ES2007618A6 true ES2007618A6 (es) 1989-07-01

Family

ID=8251377

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8701779A Expired ES2007618A6 (es) 1987-06-17 1987-06-17 Perfeccionamientos en sistemas de porteros electronicos.

Country Status (1)

Country Link
ES (1) ES2007618A6 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2048116A2 (es) * 1991-09-11 1994-03-01 Loh Kg Ritto Werk Instalacion telefonica con una estacion de puerta y por lo menos un puesto telefonico interior.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2048116A2 (es) * 1991-09-11 1994-03-01 Loh Kg Ritto Werk Instalacion telefonica con una estacion de puerta y por lo menos un puesto telefonico interior.

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20020401