¿Cómo funciona un amplificador a tubos de vacío (Válvulas)?
How a vacuum tube amplifier works, explained stage by stage through a beautiful 1950s Pathfinder amp, from the rectifier to the power output.

I have posted a video on Youtube explaining how a tube amp works or valves, illustrating the operation of each of the stages in the simplest possible way. This is a beautiful 1950s Pathfinder amp that I got my hands on recently. Like most amplifiers, its design is simple but functional, as well as PERFECT for a didactic explanation of its operation.
Tube amplifier operation video
I leave you with the video, in it I have published the schematic diagram of the circuit with all its details, from the rectifier to the power amplification stage. I hope it is to your liking and usefulness.
Errata: En el video presento al rectificador de la fuente de poder como un rectificador de media onda, siendo un rectificador de onda completa. Gracias al amigo Taoiste, que me hizo notar que se trata de un doble diodo.
En este mismo blog he publicado otro artículo acerca de cómo convertir uno de estos amplificadores de propósito general o incluso una radio a tubos, en un excelente amplificador de guitarra eléctrica. Aquí les dejo un vínculo:
Convirtiendo una radio a tubos de vacío en un amplificador de guitarra eléctrica
If valve sound draws you in, see how to turn an old radio into a guitar amp and the restoration of a vintage amplifier. More in Electronics.
Categories
The books · born from this blog

Atahualpa con su abrigo de pelo de murciélago
y otras 49 historias verdaderas que parecen mentira
Available on Amazon
Tocar madera
Pequeña historia de las supersticiones que el mundo no ha podido soltar
Available on Amazon
100 futuros
Cien escenarios del mundo que viene con la inteligencia artificial
Available on AmazonYou may also like

How USB-C works and why one cable charges fast
All USB-C cables look the same, but they aren't: we explain the e-marker chip and why one charges at 240W while another barely reaches 15W.

ESP32 vs Arduino vs Raspberry Pi Pico: which to choose
A clear comparison of the ESP32, Arduino and Raspberry Pi Pico: how they differ, which one fits your project and what each board actually costs.

ESP32 from scratch: which board to buy and what to build
A beginner's guide to the ESP32: which board to buy for your project, how the S3, C3 and C6 models differ, and what you can actually build with each.