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Meowth Guest
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Posted: Mon Jul 25, 2005 6:09 am Post subject: AC to DC to conserve energy, good idea or bad? |
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Will I conserve more energy by using a 120v AC 60watt reading lamp, or
a lamp that has a built in transformer that has an input of 120v AC to
12v AC which uses a 12v 60watt bulb? |
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absorbentgnome
Joined: 30 May 2005 Posts: 51 Location: Cardiff, UK
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Posted: Mon Jul 25, 2005 10:18 am Post subject: |
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The 120V AC bulb will be more 'efficient' because it is directly connected to the power source. The 12V AC bulb requires the use of a transformer, which will waste some energy as heat.
The difference, however, is minimal. You'd be far better off using an energy saving fluorescent bulb/tube if you are worried about saving energy. |
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Guest
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Posted: Mon Jul 25, 2005 11:39 am Post subject: |
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ur gay |
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absorbentgnome
Joined: 30 May 2005 Posts: 51 Location: Cardiff, UK
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Posted: Mon Jul 25, 2005 12:07 pm Post subject: |
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Retard. |
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Guest
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Posted: Tue Jul 26, 2005 3:56 am Post subject: |
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absorbentgnome wrote: | The 120V AC bulb will be more 'efficient' because it is directly connected to the power source. The 12V AC bulb requires the use of a transformer, which will waste some energy as heat.
The difference, however, is minimal. You'd be far better off using an energy saving fluorescent bulb/tube if you are worried about saving energy. |
Thanks for the heads up |
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Guest
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Posted: Thu Jul 28, 2005 6:53 pm Post subject: AC to DC to conserve energy, good idea or bad? |
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current=watts/volts.
The lower the voltage the higher the current.
120v better as a result. |
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