Frequency performance of Hamon transfer standards

摘要

Shielded and temperature controlled 1 000 ? / 10 ? and 10 000 ? / 100 ? transferrnstandards have been realized to be used in the frequency range up to 5 kHz. Their frequencyrnperformances have been evaluated by comparison with calculable resistors of quadrifilar and octofilarrndesign. Thanks to the known frequency performances, both standards can serve as reference devicesrnfor precision AC measurements of resistance ratios made by means of commercial four terminal-pairrnbridges.