Para recibir las estaciones de onda medias de su localidad, tenemos aquí un receptor que, a pesar de su simplicidad, con el uso de una buena antena, puede excitar un altavoz. El autor, para "ahorrar" componentes, sugiere que la sintonía sea hecha por el movimiento del núcleo de la bobina, pero está claro que esta operación será facilitada por la conexión de un capacitor variable en paralelo con la misma. Esta bobina consiste en aproximadamente 80 vueltas de el diodo detector puede ser de cualquier tipo para uso general, como el 1N34, mientras que en el proyecto original el autor usó transistores antiguos de germanio PNP, como los de los machos de ferrita, En el caso de que el transformador de salida tiene un devanado primario de al menos 1k, de acuerdo con el altavoz. La alimentación del circuito se puede realizar con tensiones entre 3 y 9 V, y la antena externa debe tener al menos 5 metros para mayor volumen. Una buena conexión a tierra facilitará la recepción de las estaciones más débiles. El autor observa también que en el caso de la utilización de transistores NPN, basta invertir la polaridad de la fuente de alimentación.

 


 

 

 

18.81MBMemory Usage40.64msRequest Duration
Joomla! Version5.2.3
PHP Version8.3.20
Identityguest
Response200
Templatecassiopeia
Database
Server
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Version
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Collation
latin1_swedish_ci
Conn Collation
utf8mb4_general_ci
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$_POST
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    574μs
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    328μs
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