ES441188A1 - Electronic intercom by waves. (Machine-translation by Google Translate, not legally binding) - Google Patents

Electronic intercom by waves. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES441188A1
ES441188A1 ES441188A ES441188A ES441188A1 ES 441188 A1 ES441188 A1 ES 441188A1 ES 441188 A ES441188 A ES 441188A ES 441188 A ES441188 A ES 441188A ES 441188 A1 ES441188 A1 ES 441188A1
Authority
ES
Spain
Prior art keywords
waves
translation
machine
self
legally binding
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
ES441188A
Other languages
Spanish (es)
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.)
ELECTRONICA LA TORRE S A
Original Assignee
ELECTRONICA LA TORRE S A
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 ELECTRONICA LA TORRE S A filed Critical ELECTRONICA LA TORRE S A
Priority to ES441188A priority Critical patent/ES441188A1/en
Publication of ES441188A1 publication Critical patent/ES441188A1/en
Expired legal-status Critical Current

Links

Landscapes

  • Transceivers (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

Electronic intercom by waves, essentially characterized by the fact of comprising a filter selector of waves that is put into service by a call oscillator and being pressed one of the buttons of which it consists, exciting a relay provided with self-feeding means, maintaining this self-powered mode meanwhile the intercommunication between two devices persists, carrying an on-line pushbutton to speak in the closed position and listening in the open position, as well as a switch instead of the pushbutton, to act with a dictaphone, having an additional pushbutton, so that to end the communication and to leave the intercom out of service, the circuit is interrupted and the self-powered relay is disconnected. (Machine-translation by Google Translate, not legally binding)
ES441188A 1975-09-23 1975-09-23 Electronic intercom by waves. (Machine-translation by Google Translate, not legally binding) Expired ES441188A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES441188A ES441188A1 (en) 1975-09-23 1975-09-23 Electronic intercom by waves. (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES441188A ES441188A1 (en) 1975-09-23 1975-09-23 Electronic intercom by waves. (Machine-translation by Google Translate, not legally binding)

Publications (1)

Publication Number Publication Date
ES441188A1 true ES441188A1 (en) 1977-04-01

Family

ID=8470028

Family Applications (1)

Application Number Title Priority Date Filing Date
ES441188A Expired ES441188A1 (en) 1975-09-23 1975-09-23 Electronic intercom by waves. (Machine-translation by Google Translate, not legally binding)

Country Status (1)

Country Link
ES (1) ES441188A1 (en)

Similar Documents

Publication Publication Date Title
CA1003588A (en) Voice switch circuits for use in loudspeaking telephone circuits
ES441188A1 (en) Electronic intercom by waves. (Machine-translation by Google Translate, not legally binding)
SE7606718L (en) SWITCHING DEVICE FOR AN AUTOMATIC TELEPHONE COMMUNICATION SWITCH
AU514725B2 (en) Key telephone line circuit
JPS5213706A (en) Key telephone system
JPS5493905A (en) Speech circuit for key telephone system
GB1556073A (en) Solenoid circuit for pushbutton release in telephones
JPS5233049A (en) Multistage closed switchboard
SU860350A2 (en) Call device
JPS51112214A (en) Mobile radio telephone
ES297064A1 (en) Improvements introduced to intercommunicators (Machine-translation by Google Translate, not legally binding)
GB895281A (en) Improvements relating to toy telephone sets
ES465830A1 (en) Emergency call system and electric door for multiple housing buildings. (Machine-translation by Google Translate, not legally binding)
ES218760U (en) New telephone of automatic door. (Machine-translation by Google Translate, not legally binding)
JPS5331908A (en) Preset dial unit
JPS524106A (en) Microphone incorporating transmitting/ receiving switching unit actuat ed by voice
NL144462B (en) CIRCUIT FOR SWITCHING BETWEEN MONO AND STEREO OPERATION IN A RECEIVER.
ES437415A1 (en) Adapter of signaling between telephone centrals current continuous multi frequency ae and m, and viceversa. (Machine-translation by Google Translate, not legally binding)
JPS562755A (en) Diverse terminal equipment mounted on moving material
ES84666U (en) Double contact relay for speakers (Machine-translation by Google Translate, not legally binding)
JPS5224013A (en) Hearing aid
JPS5630354A (en) Auto press-to-talk interphone system
CA1030679A (en) Solenoid circuit for pushbutton release in telephones
ES161730U (en) An additional equipment for submission of submission. (Machine-translation by Google Translate, not legally binding)
GB1312840A (en) Snap action switch