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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。
This paper reports the improvement of the oscilloscope oscilloscope JP-IA, scanning speed from the original instrument 250mv / s, to 1000mv / s, 500mv / s, 250mv / s, 100mv / s, 59mv / s and 35mv / s ; Potential range from + 0.5V ~ -2.0v extended to + 2.5v ~ -2.0v. In addition, the sensitivity of the derivative is discussed, and the proposed integrated op amp derivative circuit is compared with the original derivative of the instrument. The sensitivity is increased by 25 times, while maintaining the resolution of 35mv, the waveform is not distorted. The improvements proposed in this paper are simple, cheap and easy to popularize. Performance tests show that the improvement is successful and suitable for the research and analysis of various electrode reactions.