
Coiled filament can be used for the production of incandescent lamps, with single helix type, double helix type and other types. Why coiled filament is applied for producing incandescent lamps? Here are some reasons: 1. The filament is very thin so that it is fragile if it is working under high temperature for a long time. While the helix structure can play a role of buffer to prevent it from breaking under vibration. 2. Light is emitted from the incandescent…