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John1397
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Does a 12v bulb rated 100 watt give the same amount of light as a 120v bulb rated 100 watt?
John1397 said:Does a 12v bulb rated 100 watt give the same amount of light as a 120v bulb rated 100 watt?
I would say much more than 'a bit'. A tungsten filament with the appropriate resistance for 12V operation is much more chunky and basic 12V filament lamps can be run much hotter for a given Power dissipation when a (skinny) 230V filament wouldn't last long enough at that temperature. A few degrees higher operating temperature makes a significant difference to the amount of visible light. The 25W 12V lamps that were used in motor cars before the Halogen versions used to put out a lot more than the feeble 25W mains bulbs. Since halogen lamps came along, things are a bit different because high voltage filaments last better when run at higher temperature.BvU said:In first order: yes. Differences in efficiency can spoil that a bit.
Yes the light emitted depends upon the temperature, which can be anything from Room temperature to 6000K.skeptic2 said:I'm with Vanadium 50. There is no conversion between watts and lumens. Any load of 1.44 ohms will dissipate 100 watts with a 12 volt source whether it is a resistor on a circuit board, a 12 volt heater or a 100 watt bulb.
John1397 said:Does a 12v bulb rated 100 watt give the same amount of light as a 120v bulb rated 100 watt?
sophiecentaur said:I would say much more than 'a bit'. A tungsten filament with the appropriate resistance for 12V operation is much more chunky and basic 12V filament lamps can be run much hotter for a given Power dissipation when a (skinny) 230V filament wouldn't last long enough at that temperature. A few degrees higher operating temperature makes a significant difference to the amount of visible light. ...
Light output of a 230 V version is usually slightly less than that of a 120 V version. The lower current (higher voltage) filament is thinner and has to be operated at a slightly lower temperature for same life expectancy, and that reduces energy efficiency.[108] The lumen values for "soft white" bulbs will generally be slightly lower than for clear bulbs at the same power.
The main difference between a 12 volt 100 watt bulb and a 120 volt 100 watt bulb is the voltage they require to operate. The 12 volt bulb requires 12 volts of electricity, while the 120 volt bulb requires 120 volts. This means that the 120 volt bulb will be brighter and use more energy than the 12 volt bulb.
No, a 12 volt bulb cannot be used in place of a 120 volt bulb. The two bulbs require different voltages to operate and using the wrong voltage can cause the bulb to malfunction or even cause a fire hazard. It is important to always use the correct voltage for your bulbs.
A 12 volt 100 watt bulb will use 100 watts of electricity. The wattage of a bulb is a measure of the amount of energy it consumes, not the amount of light it produces. So a 100 watt bulb will use the same amount of electricity whether it is a 12 volt or 120 volt bulb.
The lifespan of a 12 volt 100 watt bulb can vary depending on the quality of the bulb and how often it is used. On average, a 12 volt 100 watt bulb can last anywhere from 1,000 to 2,000 hours. It is important to always check the manufacturer's specifications for the specific bulb you are using.
No, a 120 volt 100 watt bulb cannot be used in a 12 volt system. The bulb is designed to operate at 120 volts and using it in a 12 volt system can cause it to overheat and potentially cause a fire. Always use the correct voltage for your bulbs to ensure safety and proper functioning.