🧿Protector de FILAMENTOS de válvulas de vacío | Circuito práctico

I'm showing a circuit to protect vacuum tube filaments, allowing them to be powered with current instead of voltage. Simple but very effective! 👉 Watch how to reduce filament voltage:    • Válvulas de vacío: 3 métodos para reducir ...   👇 👉 Identify vacuum tubes with the erased model:    • 💡¿Sabes cómo identificar VÁLVULAS DESCONOC...   🗂️​ Chapter index: 00:00 Introduction 01:53 The circuit 02:49 Power supply 04:34 Operation 05:06 Schematic explained 10:51 Possible problems 🎵 Music: Acoustic Meditation and Acoustic Guitar #1 (Audionautix) #EnClaveDeRetro #electronics