Electronic – Is voltage divider applicable on circuits where there is no ground

voltage divider

For the circuit below, if the bottom terminal is -Vin and not grounded, is applying voltage divider possible at all?

If this is the case, what would the equation be? I never heard of a voltage divider with no reference ground at the bottom.

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Best Answer

Yes. Consider a more general case and apply the superposition theorem:


simulate this circuit – Schematic created using CircuitLab

$$ V_o = V_o(V1) + V_o(V2) = V1 \frac{R2}{R1+R2} + V2 \frac{R1}{R1+R2}$$