We have designed and fabricated an inexpensive AC susceptometer which works around room temperature. The susceptometer uses the principle of mutual inductance bridge with null detection algorithm. The bridge was balanced by two digitally controlled stepper motors coupled with two highly linear potentionmeter. The susceptometer was tested with double-perovskite structured samples of which transition temperatures are around room temperature. The apparatus is suitable and would be very useful for low-budget research laboratories which deal with magnetic experiments.

中文翻译：

---

一个简单的桥来操作交流电纳表

我们设计并制造了一种价格低廉的交流电度计，可在室温下工作。电度计采用互感电桥原理和零位检测算法。电桥由两个数控步进电机和两个高线性电位计平衡。使用转变温度在室温附近的双钙钛矿结构样品对电算仪进行了测试。该设备适用于处理磁性实验的低成本研究实验室，并且非常有用。