R-C Oscillators using plural inverters
Patent 4316158 Issued on February 16, 1982. Estimated Expiration Date: 
January 7, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 7, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3851277 3863179 InventorsAssigneeApplicationNo. 06/109916 filed on 01/07/1980US Classes:331/111, Relaxation oscillator331/57RING OSCILLATORSExaminersPrimary: Grimm, Siegfried H.Attorney, Agent or FirmInternational ClassesH03K 3/00 (20060101)H03K 3/282 (20060101) H03K 3/354 (20060101) Foreign Application Priority Data1979-01-17 JPAbstractIn an oscillator circuit including a variable capacitor for inverting a pair of inverters oppositely to each other with a time period defined by a resistance value of a resistor and a capacitance of the variable capacitor, an additional capacitor is provided to be biased by an inverter function of an additional inverter in voltage polarity opposite to that of the variable capacitor.Other References
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