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高稳定度晶体管稳流源的研制工作,是为建立我国弱磁场强度标准而提出的任务。弱磁场强度标准装置主要由一组标准线圈和一组能提供高稳定度电流的电源以及其他一些测量仪器仪表组成,因此,稳流源性能的优劣,直接影响标准装置的精度。本稳流源达到的技术指标如下: 1、最高输出电压:75V 2、输出电流:0～1A 3、稳定度:≤1×10~(-7)(当电网电压变
The development of high-stability transistor steady current source is a task proposed for establishing the standard of weak magnetic field strength in our country. The standard device for weak magnetic field strength mainly consists of a set of standard coils and a set of power supplies that provide high-stability current as well as some other measuring instrumentation. Therefore, the performance of the steady flow source has a direct impact on the accuracy of the standard device. The steady flow of the source to achieve the technical indicators are as follows: 1, the maximum output voltage: 75V 2, the output current: 0 ~ 1A 3, stability: ≤ 1 × 10 -7 (when the grid voltage becomes variable