TOPIC 5

Kelvin double bridge R 3a R4aR4a R3R3 R4R4 RxRx R2R2 R5R5

Kelvin double bridge with source and detector interchanged IxIx IsIs R3R3 R4R4 R 3a R 4a UxUx UsUs RxRx RsRs

DC comparator bridge IsIs IxIx NsNs NxNx RxRx RsRs PD OSC

Bridge based on an automatically balanced DC comparator Master PS Slave PS IsIs IxIx RsRs RxRx NsNs NxNx PD OSC

Transformer C-C bridge CsCs CxCx GxGx GaGa NaNa NsNs NxNx D

AC comparator C-C bridge NxNx NaNa NsNs D U IxIx IsIs IaIa CxCx GxGx GaGa CsCs

High voltage comparator C-C bridge

Shielding of AC comparator C-C bridge D U CxCx CsCs NxNx NsNs

Development of a four terminal-pair C-C bridge

Simple C-C bridge

Injection and combining network

Improved version

Four terminal pair R-R bridge and its application to QHE-based calibrations of resistance standards

R-R bridge

QHD with one pair of voltage probes as reference standard

QHD with three pairs of voltage probes as reference standard

Ricketts-Kemeny equivalent circuit of an 8-terminal QHD