References in periodicals archive ?
The 4TP bridge, at balance, measures the ratio of the QHR "standard" (with its in-phase impedance component defined between external connection stars Y and Z) and the wire-wound resistor (defined between internal connection points A and B).
Figure 11 shows a magnetic field sweep over the quadruple-series-connected i = 2 plateau [V.sub.H](Y,Z) at 1.51 K compared in 4TP mode with the 12.9 k[ohm] wire-wound resistor 12.9WW1 at 20.0 [micro]A rms and 1592 Hz.
Thomas had taken up the task of improving the long-term stability of wire-wound resistors, which were used to measure the current in absolute determinations.