75 Watt Clear Incandescent Light Bulbs – The caps that sit on the foundation of a light bulb are equally as important as the bulb. True, those tiny metal fittings might appear fairly insignificant due to their size but their significance is that they dictate that bulbs can be fitted to that light fittings. Without the right cap, the space, alleyway, stairwell or backyard will remain in the dark.
With the range of lights available in the marketplace nowadays, there are very definite specifications to make sure that the right bulb is fitted. For instance, the two pin, or bi-pin, the cap on some lights can only be placed into bi-pin light sockets, so gu10 LED bulbs can’t be set in a light socket which is not meant for your gu10 cap. However, there is more than 1 type of bi-pin cap, together with the cap on g9 halogen bulbs considerably different in design and appearance, and used only with certain types of halogen bulbs.
The reason behind a cap is to permit electrical contact between the electric supply and the light itself, without leaving wiring and electronic elements vulnerable. The metallic pins make direct contact with the electricity source, allowing the electricity to flow through the filament, producing the necessary power to create the light to shine and provide the required illumination.
The entire range of caps is extensive, but they can be broken down into three principal types, namely the bayonet, the Edison screw and the bi-pin. |} Bayonet Cap This is arguably the most identifiable cap and is more often than not found on the ordinary incandescent bulb selection for national lighting, although energy saving lighting also contain this cap to permit simple switch over to counter house lighting.
The layout is a simple metallic cap at the bottom of the bulb with 2 ears, or small pins, protruding from the side. These two pins lock at the face of the socket, to hold the bulb in place. The title bayonet is derived in the thrust and twist action that’s necessary to match them.