base

The base is the part of a lamp that is inserted or screwed into the version of a lamp.  So it gives the illuminant hold and at the same time represents the interface for the electricity. A base must match the version exactly, otherwise it is impossible to insert the light source into the lamp device. This prevents false lamps from being used, which therefore makes sense, since they often look similar for high and low-voltage, but are operated with different voltages.

In order to ultimately find the right base for the version, the various base types with letters and a combination of numbers are described. The letters stand for the type of fastening. Here e stands for a screw thread for the Edison version, G for a socket with at least two outstanding contact parts and B for bayonet base. The numbers then indicate the contact parts distance.

This simple screwing in or putting together of the socket and base also makes it very easy to exchange, since conventional discharge lamps and light bulbs only have a limited lifespan. If a lamp burns through, it is possible to use a new pear quickly.