What is being done with nickel

• Publisher: Elsevier Science
• Year: 1933
• Tongue: English
• Weight: 174 KB
• Volume: 215
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(33)91273-9

✦ Synopsis

CURRENT TOPlCS. 227 it that its heat loss is smalltaking advantage of the fact that electrons in an arc-discharge can go around corners, while heatradiation must go in straight lines. This combination of heatshielded cathode and low-pressure gas appears to give the four desired characteristics of a rectifier: high voltage, large current capacity, high efficiency and long life.

Phanotrons may be constructed according to the performance demanded. One type is rated to withstand 2o,ooo volts peak inverse voltage and to deliver a maximum current of 4 ° amperes. Another tube requires 4oo watts to maintain the cathode temperature, is rated at 6oo amperes maximum output, Ioo amperes average, at any inverse voltage up to I5OO.

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