ES228833U - Amplificador de audiofrecuencia para sirena electronica y megafonia. - Google Patents

Amplificador de audiofrecuencia para sirena electronica y megafonia.

Info

Publication number
ES228833U
ES228833U ES1977228833U ES228833U ES228833U ES 228833 U ES228833 U ES 228833U ES 1977228833 U ES1977228833 U ES 1977228833U ES 228833 U ES228833 U ES 228833U ES 228833 U ES228833 U ES 228833U
Authority
ES
Spain
Prior art keywords
loudspeaker
translation
machine
legally binding
google translate
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.)
Granted
Application number
ES1977228833U
Other languages
English (en)
Other versions
ES228833Y (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.)
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 ES1977228833U priority Critical patent/ES228833Y/es
Publication of ES228833U publication Critical patent/ES228833U/es
Application granted granted Critical
Publication of ES228833Y publication Critical patent/ES228833Y/es
Expired legal-status Critical Current

Links

Landscapes

  • Circuit For Audible Band Transducer (AREA)
  • Amplifiers (AREA)

Abstract

Amplificador de audiofrecuencia para sirena electrónica y megafonía, caracterizado esencialmente por poseer una entrada conmutable para recibir alternativamente la salida de un circuito de megafonía y un circuito generador de sonidos de sirena, aplicándose dicha entrada a una etapa excitadora actuante sobre una etapa de potencia que, provista de una protección contra sobrecargas en la línea del altavoz, proporciona la alimentación electroacústica para este último, presentando la parte de megafonía una etapa preamplificadora excitada por un micrófono y provista de un dispositivo regulador del volumen de megafonía, en tanto que la parte generadora de sonidos de sirena comprende un selector de tonos asociado a un oscilador de frecuencia variable.
ES1977228833U 1977-05-30 1977-05-30 Amplificador de audiofrecuencia para sirena electronica y megafonia. Expired ES228833Y (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES1977228833U ES228833Y (es) 1977-05-30 1977-05-30 Amplificador de audiofrecuencia para sirena electronica y megafonia.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES1977228833U ES228833Y (es) 1977-05-30 1977-05-30 Amplificador de audiofrecuencia para sirena electronica y megafonia.

Publications (2)

Publication Number Publication Date
ES228833U true ES228833U (es) 1977-07-16
ES228833Y ES228833Y (es) 1977-12-01

Family

ID=8390339

Family Applications (1)

Application Number Title Priority Date Filing Date
ES1977228833U Expired ES228833Y (es) 1977-05-30 1977-05-30 Amplificador de audiofrecuencia para sirena electronica y megafonia.

Country Status (1)

Country Link
ES (1) ES228833Y (es)

Also Published As

Publication number Publication date
ES228833Y (es) 1977-12-01

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