【摘要】 PTCR是一种强非线性器件，用常规的方法很难测量流经PTCR的电流有效值。我们使用了真有效值转换集成芯片AD536研制成功PTCR残余电流测试仪，本文叙述了该仪器的原理。更多还原

【Abstract】 The PTCR is a big nonlinearly element. It is difficuty to measure the rms value of the PTCR element in normal method.We used a monlithic Integrated circuit AD536 which performs ture rms-to-dc conversion. This paper describes the principle of the PTCR remainder current instrument with AD536.更多还原