Hobart, H. M. (Henry Metcalf), 1868-1946 ed · Philadelphia, J. B. Lippincott · leaf 139
Hg. a—Plan view of Nodon Valve adopted (which see). The maximum efii-ciency is obtained at about 140 volts, andthe efficiency lies between 65 and 75 per cent,and is practically independent of the fre*quency between the limits of 25 ~ and 200 ~.Above a pressure of 140 volts, the efficiency … Hg. S.—Elevation of Nodon Valve falls off very rapidly, owing to breakdownof the film. The pf is high, being over 90per cent at full load. Temperature largelyinfluences the action of the valve, and shouldnever exceed 50° C. Figs. 2 and 3 show in plan and elevationa 5-amp Nodon valve. Fig. 4 is an…
Electrical engineering
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