Seguimos desarmando osciloscopios We continue disassembling oscilloscopes.[Esp./Eng.]
Hola amigos de hive
Buen Jueves para todos, espero estén bien.
Hoy volví con mis alumnos a desarmar otro osciloscopio. Este un poco mas moderno y ronda por los años 1970. Su marca Paco modelo S-55. Paco Electronic Co. Inc. Glendale, L.I., N.Y., USA.
A diferencia del que se desarmo anteriormente Desarmando un osciloscopio del año 1949 [esp-eng] Disassembling an oscilloscope from 1949, este cuenta con plaqueta donde se montaron los zócalos de algunas válvulas entre otros componentes.
![English]Hello friends on Hive,
Happy Thursday to everyone, I hope you're doing well.
Today, my students and I disassembled another oscilloscope. This one is a bit more modern and dates back to around the 1970s. It's a Paco S-55 model, made by Paco Electronic Co. Inc., Glendale, L.I., N.Y., USA.
Unlike the one we previously disassembled Disassembling an oscilloscope from 1949 [esp-eng], this one has a circuit board where the sockets for some of the vacuum tubes, among other components, are mounted.
Pantalla verde cuadriculada con ejes cartesianos.
![English]Green screen with a Cartesian grid.
Acá se puede ver bien la pantalla de tubo mide como 450mm de largo.
Este osciloscopio también cuenta con un chasis pero la mayoría de los componentes se montan en plaquetas, distribuidas en diferentes puntos estratégicos del chasis.
![English]Here you can clearly see the tube screen, which is about 450mm long.
This oscilloscope also has a chassis, but most of the components are mounted on circuit boards, distributed at various strategic points on the chassis.
Los condensadores tienen un 20% de tolerancia.
![English]The capacitors have a 20% tolerance.
La particularidad de esta plaqueta es que se soldaron los zócalos para poder anclar las válvulas.
![English]The uniqueness of this circuit board is that the sockets were soldered to anchor the vacuum tubes.
El transformador no se veía muy bien.
![English]The transformer wasn't very visible.
El diseño de la plaqueta era bastante simple.
![English]The circuit board design was quite simple.
Tenía resistencias de potencia.
![English]It had power resistors.
Estos condensadores eran bastante robustos en su forma física.
![English]These capacitors were quite robust in their physical form.
Aquí se puede apreciar el porcentaje de un condensador.
![English]Here you can see the percentage of a capacitor.
Aquí todas las válvulas o tubos del mismo y los datos que se pudieron encontrar:
Tubo ECC81 12at7,Telefunken, cantidad 1, Alemania.
Tubo 6AU8A,Westinghouse,1 ,USA.
Tubo12by7a ,General Electric, cantidad 2, USA
Tubo12au7, ITT Lorenz, cantidad 1,Inglaterra .
Válvula HEINTZ & KAUFMAN, cantidad 1 ,USA.
![English]Here are all the valves or tubes from it and the data that could be found:
Tube ECC81 12AT7, Telefunken, quantity 1, Germany.
Tube 6AU8A, Westinghouse, quantity 1, USA.
Tube 12BY7A, General Electric, quantity 2, USA.
Tube 12AU7, ITT Lorenz, quantity 1, England.
Valve HEINTZ & KAUFMAN, quantity 1, USA.
Diodo 0A 211
![English]Diode 0A 211.
En esta foto se puede apreciar los zócalos soldados en la plaqueta
![English]In this photo, you can see the sockets soldered onto the circuit board.
Como se ve en la plaqueta las resistencias tienen un 10% de tolerancia y algunos condensadores tienen hasta 20% de tolerancia.
![English]As seen on the circuit board, the resistors have a 10% tolerance, and some capacitors have up to a 20% tolerance.
Fue bastante interesante descubrir sobre la historia de estos componentes y sus orígenes. Y a la vez, como fue el avance tecnológico.Podría decirse que fue una experiencia enriquecedora para mis alumnos y para mi también.
![English]It was quite interesting to learn about the history of these components and their origins, as well as the technological advancements. I could say it was an enriching experience for both my students and me.
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