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:
Jun. 27, 1989
Filed:
Jul. 29, 1988
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A drive circuit for driving a semiconductor device includes a reference voltage level generator for outputting a reference voltage level which is associated with an input voltage level from an external power source. Supplied with the reference level, a ring oscillator oscillates a frequency signal having a predetermined frequency. A drive voltage level generator responds to the reference level and the frequency signal for producing a drive voltage level which is constantly substantially equal to the reference level in synchronism with the frequency signal. The drive voltage level generator feeds power from the external power source to the semiconductor device at the drive level, thereby driving the semiconductor load circuit.
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