AC-DC transfer difference;
fast-reversed dc (FRDC);
Josephson array;
Josephson junction;
thermal converter;
thermoelectric effects;
D O I:
10.1109/TIM.2003.810720
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
The ac-dc transfer difference due to thermoelectric effects in a thermal converter was evaluated using a NbN/TiN/NbN Josephson junction array as an ultra-stable fast-reversed dc (FRDC) source. The Josephson junction array was connected in parallel with a conventional semiconductor FRDC current source, as an "add-on" voltage-stabilizer for the input of the thermal converter. The ac-dc difference due to thermoelectric effects was evaluated with a standard measurement (type-A) uncertainty of the order of 0.01 muV/V, four-times better than that with the conventional semiconductor FRDC source.