Dimmer notes: Difference between revisions
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'''The ''conceptually'' simplest design''' is a variable resistor. | '''The ''conceptually'' simplest design''' is a variable resistor. | ||
Specifically a [[rheostat]], which is the name for a variable resistor that won't burn with more than tiny currents. | Specifically a [[rheostat]], which is the fancy name for a variable resistor that won't burn with more than tiny currents {{comment|(the most common variable resistor, the [[potentiometer]], is made for signals, not power)}}. | ||
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* large - both in the clunky sense and that it uses a lot of wire | * large - both in the clunky sense and that it uses a lot of wire | ||
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==Transformer as dimmer== | |||
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A transformer can be used to lower voltage; assuming you are driving a resistor (incandescent lightbulb), | |||
current will follow that. | |||
This is a clunky but otherwise valid way to | |||
You could use an [[autotransfomer]], or a a device a few of us have in a corner, a [[variac]]. | |||
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Revision as of 12:54, 2 March 2024
An electric dimmer lets through a limited amount of power.