Performance of High-Intensity Carbons in the Blown Arc

C. E. Greider

The performance of carbons operated in the Gretener type of “blown arc” shows the following advantages as compared with the more usual method of burning: (a) from 5 to 25% less current is required to produce the same light; (b) at the higher brightness levels, less carbon consumption is required for the same light; (c) the maximum light that the carbon will deliver is increased by 10 to 20%; and (d) uniformity of brightness across the face of the arc crater is considerably improved. The performance advantages of the “blown arc” seem to be considerably greater for 12-mm than for 10-mm carbons, and are greatest when the carbon is operated at or near its maximum current and light output. The addition of blowing to the arc introduces special problems regarding the design and operation of the negative electrode.

Print ISSN
Published
1953-10
Content type
Original Research
DOI
10.5594/J00985