Links

Grundlegende Informationen zu Elektronen-Röhren:
Link: Elektronen-Röhre (Wikipedia – DE)

Common infos about vacuum tubes (EN):
Link: Vacuum-Tubes (Wikipedia – EN)

Von der Universität für Musik und darstellende Kunst in Wien – sehr theoretisch:
PDF: Grundlageninformation zum Thema Lautsprecher

How to calculate the volateg and current:
PDF: Hammond Power Transformer Guide

Bias-Einstellung beim Röhrenverstärker – PDF

How to bias a tube amp – PDF

Vacuum Tube Loadline Calculator

Tube-Amp biasing @ YouTube

EI Factory Tour Part 1 (YouTube Video)

EI Factory Tour Part 2 (YouTube Video)

Amp-Books (Website)

The Valve Wizard (Website)

Duncan Amps & Tube Datasheet Locator (Website)

TubeBooks.org (Website)

Software Tools

LTSpice - Analog Simulator (Website)

DIY-Layout Creator (Website)

KiCad (Website) - PCB Software

ARTA (Website)

LibreCAD (Website)

SPlan (Website)

Inkscape (Website)

Scribus (Website)