FAQs

FAQ/025 KAM-500: What voltage I am measuring with my quarter-bridge?

August 18, 2014

Vo = E+ – E

Voltage at E-:

The voltage Va is a virtual ground so E- = 0V

Voltage at E-:

E+ = (V2+V1)/2

With V2=Iexc x Rm and Vl=-Iexc x RL

So: E+ = Iexc x (Rm-RL)/2

Vo = Iexc x (Rm-RL)/2 – 0



 

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