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:
Aug. 31, 1993
Filed:
Apr. 27, 1992
James A Karlock, Portland, OR (US);
Other;
Abstract
A phase shift circuit having an input terminal for receiving an input signal having a sinusoidal waveform and an output terminal for providing an output signal that has a sinusoidal waveform and is adjustable in phase relative to the input signal, comprises a bipolar transistor having a base connected to the input terminal, an emitter at which it provides a signal at the same frequency as the input signal and in phase therewith, and a collector at which it provides a signal at the same frequency as the input signal and out of phase therewith, the circuit also comprises a capacitor connector between the collector and the output terminal, a diode connected between the emitter and the output terminal, and a resistor network for biasing the diode to adjust the conductivity of the diode.