Abstract

An inexpensive semiconductor-controlled regulator for the dc spectrographic arc is described. It is used for maintaining steady arc currents from 1 to 15 A, ±50 mA with a 120-V dc source. It is unique in that it employs solid-state circuitry. As compared to the conventional multipurpose power source with current regulators, the present model offers advantages of compactness, easier installation, and economy.

An Improved Constant Current Regulator

Lewis G. Longsworth and Duncan A. MacInnes
J. Opt. Soc. Am. 19(1) 50-56 (1929)

The Measurement of Spectral Intensities in the Direct Current Arc*

Robert R. Hampton and H. N. Campbell
J. Opt. Soc. Am. 34(1) 12-20 (1944)

Igniting an Arc for Spectrographic Analysis in Vacuum

A. J. Mitteldorf
J. Opt. Soc. Am. 41(9) 646-647 (1951)

Spectral Radiance of a Low Current Graphite Arc

Albert T. Hattenburg
Appl. Opt. 6(1) 95-100 (1967)

A high temperature regulator for use with alternating current

H. S. Roberts
J. Opt. Soc. Am. 6(9) 965-977 (1922)