The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 05, 1976
Filed:
Feb. 13, 1975
Charles L Dennis, Dallas, TX (US);
Mobil Oil Corporation, New York, NY (US);
Abstract
A pulsed neutron system includes an accelerator tube having a target, an ionization section, and a replenisher for supplying accelerator gas. The power supplied to the replenisher is controlled to maintain the ionization pulse time duration within the upper and lower limits of a time window. A comparator compares the ionization pulse time duration to the upper and lower limits of the time window and produces an output pulse which is utilized by an operational amplifier to operate a stepping motor in one direction if the ionization pulse time duration exceeds the upper limit of the time window and in a reverse direction if the ionization pulse time duration is below the lower limit of the time window. The stepping motor positions a variable autotransformer which increments the voltage applied to the replenisher to change the ionization pulse time duration if it does not fall within the upper and lower limits of the time window.