ES179910A1 - IMPROVEMENTS IN ELECTRICAL SIGNAL SYSTEMS - Google Patents

IMPROVEMENTS IN ELECTRICAL SIGNAL SYSTEMS

Info

Publication number
ES179910A1
ES179910A1 ES0179910A ES179910A ES179910A1 ES 179910 A1 ES179910 A1 ES 179910A1 ES 0179910 A ES0179910 A ES 0179910A ES 179910 A ES179910 A ES 179910A ES 179910 A1 ES179910 A1 ES 179910A1
Authority
ES
Spain
Prior art keywords
signals
frequencies
frequency
currents
electrical signal
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
ES0179910A
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana 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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES179910A1 publication Critical patent/ES179910A1/en
Expired legal-status Critical Current

Links

Abstract

Mejoras en sistemas de señales eléctricas caracterizado por una línea eléctrica y telefónica a través de la cual pasan corrientes de distintas frecuencias estando una de ls frecuencias asignada a señales medios para transmitir las frecuencias por dos vías distintas medios en la primera de las vías para atenuar igualmente todas las frecuencias medios para atenuar y si es posible eliminar la frecuencia de señales medios para rectificar estas corrientes en la salida de las vías y para obtener corrientes continuas medios para combinar los potenciales mientras se oponen entre sí para obtener de este modo un potencial que corresponda a la frecuencia de señales si existen medios para gobernar un relevador electrónico mediante el potencial resultante medios para utilizar la operación del relevador electrónico e indicar así la presencia de la frecuencia de señales.Improvements in electrical signal systems characterized by an electrical and telephone line through which currents of different frequencies pass, one of the frequencies assigned to medium signals to transmit the frequencies by two different means in the first of the ways to also attenuate all frequencies means to attenuate and if possible to eliminate the frequency of signals means to rectify these currents at the output of the tracks and to obtain continuous currents means to combine the potentials while opposing each other to obtain in this way a potential that corresponds to the frequency of signals if means exist to govern an electronic relay by the resulting potential means to utilize the operation of the electronic relay and thus indicate the presence of the frequency of signals.

ES0179910A 1946-05-18 1947-09-27 IMPROVEMENTS IN ELECTRICAL SIGNAL SYSTEMS Expired ES179910A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR515471 1946-05-18

Publications (1)

Publication Number Publication Date
ES179910A1 true ES179910A1 (en) 1947-11-01

Family

ID=38463243

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0179910A Expired ES179910A1 (en) 1946-05-18 1947-09-27 IMPROVEMENTS IN ELECTRICAL SIGNAL SYSTEMS

Country Status (1)

Country Link
ES (1) ES179910A1 (en)

Similar Documents

Publication Publication Date Title
CH261509A (en) Installation on sound recording devices.
CH265359A (en) Frequency-keyed telegraph transmitter.
CH268699A (en) Equalizing amplifier for telegraph signals.
FR901379A (en) Telegraphy by frequency variations
ES179910A1 (en) IMPROVEMENTS IN ELECTRICAL SIGNAL SYSTEMS
CH254957A (en) Selective electrical signal receiver.
CH270139A (en) Pressure telegraph receiver.
CH271780A (en) Telegraph Receiver.
CH234446A (en) Frequency relay.
CH275982A (en) Equalizing transmitter for telegraph signals.
FR929106A (en) Improvements to equipment for the telegraph service
CH245853A (en) Tube generator circuit.
DK68627C (en) Electrical signaling system operating with signal currents having different characteristics.
CH231437A (en) High frequency amplifier circuit.
FR893502A (en) Electrical signal receiver
CH234477A (en) Low noise frequency conversion circuit.
CH231365A (en) Circuit arrangement for alternating current telegraphy, in which the separating and character current steps are transmitted as alternating current trains of the same frequency but different phase positions.
CH254967A (en) Electric signal system.
DK69406C (en) Sound recorder operating by telegraph method.
CH232246A (en) Riegger circuit for decimeter waves.
GR10408B (en) SOUND ALPHABET.
ES161406A2 (en)
DK71539C (en) Generator that produces pulses with high frequency.
DK59066C (en) Signal receiver at Telephone systems, in which Signals are transmitted at an AC current within the Voice Frequency band.
DK64706C (en) Electrical Signal System that works with Signal currents with different Properties.