We have developed a system to extend, by a factor of up to 1000, the voltage range over which Josephson arbitrary waveform synthesizers (JAWS) can be used in ac voltage metrology. The system is based on a precision inductive voltage divider, with a lock-in amplifier as the detector. Using a JAWS with a maximum output voltage of 250 mV (root mean square), we have made accurate voltage measurements up to 120 V at 60 Hz with expanded uncertainties ( $k = 2$ ) of no more than 1.5 $\mu \text{V}$ /V and demonstrate that the system can operate up to 1 kHz. We anticipate that our JAWS-based system will improve uncertainties in ac voltage metrology by one order of magnitude compared to techniques based on thermal voltage converters.

中文翻译：

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使用约瑟夫森任意波形合成器和感应分压器测量高达 120 V 的交流电压

我们开发了一种系统，可将约瑟夫森任意波形合成器 (JAWS) 在交流电压计量中使用的电压范围扩展至 1000 倍。该系统基于精密感应分压器，并以锁定放大器作为检测器。使用最大输出电压为 250 mV（均方根）的 JAWS，我们在 60 Hz 下进行了高达 120 V 的精确电压测量，并具有更大的不确定性（ $k = 2$）不超过1.5 $\mu \文本{V}$/V 并证明系统可以在高达 1 kHz 的频率下运行。我们预计，与基于热电压转换器的技术相比，我们基于 JAWS 的系统将把交流电压计量的不确定性提高一个数量级。