Covers transistors, diodes, and electronic circuit fundamentals — the building blocks of Electronic Interlocking and other solid-state signalling equipment that has replaced older relay-based systems.
Key Points
- This is the transitional chapter between old relay-based electrical theory and modern Electronic Interlocking systems.
Content Status
Draft note, grounded in real official syllabus text found via research but not yet cross-checked against the primary RBE PDF directly. Treat as study-aid only until verified.