A complete control circuit for use with the usual triode ionization gauge tube is described. A modified Ridenour Lampson type circuit is employed to stabilize grid and plate voltage, as well as emission current. A simple vacuum tube voltmeter circuit permits the use of a relatively rugged 0–1 milliameter to read plate current. Special provision is made for outgassing, and for leak hunting.
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James C. Rainwater (1942) studied this question.
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