ES406191A1 - Perfeccionamientos en instalaciones magnetofonicas para la ensenanza. - Google Patents

Perfeccionamientos en instalaciones magnetofonicas para la ensenanza.

Info

Publication number
ES406191A1
ES406191A1 ES406191A ES406191A ES406191A1 ES 406191 A1 ES406191 A1 ES 406191A1 ES 406191 A ES406191 A ES 406191A ES 406191 A ES406191 A ES 406191A ES 406191 A1 ES406191 A1 ES 406191A1
Authority
ES
Spain
Prior art keywords
facilities
teaching
translation
machine
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
ES406191A
Other languages
English (en)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to ES406191A priority Critical patent/ES406191A1/es
Publication of ES406191A1 publication Critical patent/ES406191A1/es
Expired legal-status Critical Current

Links

Landscapes

  • Electrically Operated Instructional Devices (AREA)
ES406191A 1972-08-30 1972-08-30 Perfeccionamientos en instalaciones magnetofonicas para la ensenanza. Expired ES406191A1 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES406191A ES406191A1 (es) 1972-08-30 1972-08-30 Perfeccionamientos en instalaciones magnetofonicas para la ensenanza.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES406191A ES406191A1 (es) 1972-08-30 1972-08-30 Perfeccionamientos en instalaciones magnetofonicas para la ensenanza.

Publications (1)

Publication Number Publication Date
ES406191A1 true ES406191A1 (es) 1975-07-01

Family

ID=8462065

Family Applications (1)

Application Number Title Priority Date Filing Date
ES406191A Expired ES406191A1 (es) 1972-08-30 1972-08-30 Perfeccionamientos en instalaciones magnetofonicas para la ensenanza.

Country Status (1)

Country Link
ES (1) ES406191A1 (es)

Similar Documents

Publication Publication Date Title
CA968420A (en) Balanced output operational amplifier
BE774574A (fr) Enregistrements sonores et appareils de lecture
ES406191A1 (es) Perfeccionamientos en instalaciones magnetofonicas para la ensenanza.
GB1307074A (en) Automatic volume control system for multichannel amplifier
ES401536A1 (es) Perfeccionamientos en instalaciones de vigilancia de un re-cinto.
AU466569B2 (en) Amplifier for amplifying an input signal derived from a signal source and provided with an amplitude-limiting two-terminal network connected to its output circuit
ES235035A1 (es) Interfono a base de transistores para oir y hablar simultaneamente
ES217605A1 (es) APARATO ELECTRoNICO FONOINDICADOR DE HORARIOS PARA REPRODUCCIoN DE LA VOZ HUMANA
CA804105A (en) Power supply for an audio signal reproducing apparatus
CA520931A (en) Single-sided push-pull amplifier
JPS5347220A (en) Monitor unit for operation of repeater
CA514364A (en) Electric signal amplifying systems
JPS51134101A (en) Stereophonic sound reproducing equipment
GB558731A (en) Improvements in or relating to amplifier circuits for photoelectric cells and like photosensitive devices
CA524070A (en) Photoelectric sound reproduction
CA737055A (en) Arrangement for amplifying sound
AU408604B2 (en) Transistor amplifier with a non-inductive push-pull output stage
CA500984A (en) Sound recording system
AU437072B2 (en) Hydrid source follower amplifier
AU164286B2 (en) Electrical signal translating system
CA856947A (en) Transformerless audio amplifier
CA533373A (en) Zero output impedance amplifiers
CA758179A (en) Symmetrical push-pull amplifier stage for both stereophonic signals
CA500365A (en) Apparatus for sterephonic sound reproduction
CA650686A (en) Audio amplifier