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:
Jan. 27, 1976
Filed:
Dec. 12, 1973
Applicant:
Inventors:
Shinji Morozumi, Shimosuwa, JA;
Mitsuharu Kodaira, Suwa, JA;
Assignee:
Kabushiki Kaisha Seikosha, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ;
U.S. Cl.
CPC ...
3311 / ; 3311 / ; 331175 ;
Abstract
A monolithic integrated quartz crystal oscillator circuit having a resistance between the inverter output and the quartz crystal vibrator in order to stabilize the frequency characteristics thereof. An inverter including complementary coupled N-channel and P-channel MOS field effect transistors, and an output resistance at the drain connected terminals thereof, are monolithically integrated into a single chip. The resistance at the output terminal of the complementary coupled inverter effects a stabilization of the frequency of the quartz crystal oscillator circuit during changes in the supply voltage.