Long-life contacts for unidirectional currents of 1–20 amperes
作者:
A.L.Allen,
期刊:
Proceedings of the IEE - Part I: General
(IET Available online 1953)
卷期:
Volume 100,
issue 124
页码: 158-162
年代: 1953
DOI:10.1049/pi-1.1953.0045
出版商: IEE
数据来源: IET
摘要:
After an introduction to vibrator-contact problems it is shown that platinum contacts exhibit reverse and zero migration in two sets of circumstances, namely at 1–2 volts and at 10–20 amp, a small arcquench inductance having a critical influence. A long, though not unlimited, vibrator-contact life was obtainable either from platinum contacts with appropriate circuit conditions or from contacts of dissimilar metals, but an adequate life on heavy duty was obtained only with tungsten contacts in an atmosphere free of oxygen to a high degree. The trend of methods for producing exceptionally long contact life is reviewed.
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