【摘要】 本文报告了JP—IA型示波极谱仪的改进,扫描速度从原仪器的250mv/s,改为1000mv/s,500mv/s,250mv/s,100mv/s,59mv/s和35mv/s;电位范围从+0.5V～-2.0v扩展到+2.5v～-2.0v。此外,讨论了导数灵敏度,提出的集成运放导数电路,与仪器原导数档比较,灵敏度增加了25倍,同时保持分辨率35mv,波形不失真。 本文提出的改进,简单、价廉,便于推广。性能测试表明,改进是成功的,适应于各类电极反应的研究和分析应用。更多还原

【Abstract】 This paper reports the modification of Model Jp-IA oscillographic polarog-raph. The scanning speed is modified from regular 250MV/S to 1000, 500, 250, 100, 59 and 35MV/S. The positive potential range has been expanded from+ 0.5V~-2.0V to +2.5~-2.0V. Furthermore, the differential sensitivity hasalso been dicussed. We proposed an integrated operational amplifier differential circuit. The sensitivity has increased by a factor of 25 as compared with the original differential gear, the resolving power 35MV has been retained and the wave shape has not been distovted.The modification proposed in this paper is simple, cheap and convenient for the popularization. The performance test shows the modification is successful and favourable for the study of various electrode reaction and analytical application.更多还原