Explanatory notes
… in the base, which may be of the screw or bayonet type for fixing in the lamp‑holder, are the necessary electrical … gases such as neon, helium, argon, nitrogen or carbon dioxide, including flashing discharge lamps used for … have a cap (base) (e.g., screw, bayonet or bi-pin type) for fixing in the lamp-holder. These modules may have electric …
