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2. Resistive voltage dividers
2.1 Properties. Load effect
In their elementary form, resistive voltage dividers have :
an input resistor R 0 = R 1 + R 2 which we will assume to be constant ;
a reduction ratio a = R 2 /R 0 .
The equivalent diagram deduced from Thévenin's theorem consists of a source of electromotive force aU (U being the voltage actually applied to the divider) and internal resistance :
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Resistive voltage dividers
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Resistive dividers
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