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When the filament burns out in one of the incandescent light bulbs, the full line voltage appears across the burnt out bulb. A shunt resistor, which has been connected in parallel across the filament before it burnt out, will then short out to bypass the burnt filament and allow the rest of the string to light. If too many lights burn out ...
Diagram showing the major parts of a modern incandescent light bulb. ==Caption== #Glass bulb #Inert gas #Tungsten filament #Contact wire (goes to foot) #Contact wire (goes to base) #Supper wires #Glass mount/support #Base contact wire #Screw threads #Ins
Diagram showing the major parts of a modern incandescent light bulb. This version has none of the parts labeled. For a version with labels, see Image:Incandescent light bulb.svg
English: Chart shows the difference between 'on' and 'off' shunt ahead signal aspects. All of these are available as separate files below: File:UK Ground Position Light Signal - Shunt Signal - On - Pre-1996.svg; File:UK Ground Position Light Signal - Shunt Signal - On.svg; File:UK Ground Position Light Signal - Shunt Signal - Off.svg
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An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a filament that is heated until it glows. The filament is enclosed in a glass bulb that is either evacuated or filled with inert gas to protect the filament from oxidation. Electric current is supplied to the filament by terminals or wires ...
Most contemporary miniature light bulbs have an internal shunt that is intended to activate when the bulb's filament burns out. The shunt closes the circuit across the bad filament, restoring continuity, which allows the rest of the string to remain lit. However, if one shunt fails to close properly, the whole string will fail to light. [9]
Common circuit diagram symbols (US ANSI symbols) An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit. These symbols are largely standardized internationally today, but may ...