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Minimum voltage selector

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shaq

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Dear all,

If I have 4-voltage, they are A = 0.3V, B = 0.2V, C = 0.5V and D = 0.4V

In this case, B is minimum.

I need a circuit which can select the minmum voltage. How to design the minimum voltage selector?

(Do not use ADC)
 

mister_rf

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To select or just to indicate the minimum voltage?
Is this a theoretical situation with fixed values for A, B, C, D ​​or later these values can change?
 

shaq

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Dear mister_rf ,

These are can be changed.
 

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