单结晶体管对励磁调压器起励性能的影响

The unijunction transistor influence the AVR pre-exiting performance

仿制某国外发电机组励磁调压器采用国产器件替代时,由于单结晶体管的分压比偏差将引起机组不能正常起励,本文对此现象进行了分析,并提出了单结晶体管的选用测试要求。

When reproducing AVR with native electric elements, we find that the generating set can＇t be preexited because of unijunction transistor intrinsic stand-off ratio deference. Analyzed the phenomena and provide the methods to choose or test the unijunction transistor.