Bridge test

2012-04-23

Tests, the unknown resistance using the four-terminal connection method. Current connector C1, C2, potential connector P1, P2 are not unknown in the bridge arm resistance. However, the R1 = R1 ', R2 = R2', then the wiring resistance and contact resistance have little effect on the measurement results, can be ignored. So that is a bridge to ensure low resistance in the test accuracy.