Relaxation oscillator

About: Relaxation oscillator is a research topic. Over the lifetime, 1952 publications have been published within this topic receiving 22326 citations.

Low power oscillator using flipped-gate MOS

Abstract: Relax oscillation circuits have at least one comparison circuit that is structured with a flipped gate transistor and a normal MOS transistor wherein the two transistors having different threshold voltages The relaxation oscillators are configured for charging and discharging capacitances between the threshold voltages of the flipped gate transistor and the normal MOS transistor by toggling the state of a latching circuit to control the charging and discharging of the capacitances

Cancellation of a baseline current signal via current subtraction within a linear relaxation oscillator-based current-to-frequency converter circuit

Abstract: This disclosure relates to systems and/or methods for subtracting in the current domain an output current primary signal from a primary sensor from an output current reference signal from a reference sensor to produce a frequency output signal indicative of the difference between the output current primary signal and the output current reference signal.

Injection locking phenomena of Van der Pol oscillator

Abstract: Van der Pol oscillator can be used to model microwave negative oscillator, and injection locked oscillator can be looked as forced Van der Pol oscillator. The article studies the amplitude and phase dynamics of the forced Van der Pol oscillator, and gets conditions under which injection locking phenomena can occur. Injection locked Van der Pol oscillator is also realized with a simple modern semiconductor circuit in the article. At last OrCAD PSpice is used to simulate the circuit and testify the conclusions got by theory analyzing.

Electric windscreen wiper systems

Abstract: In an electric windscreen wiper system, pulsed operation of the wipers is obtainable by means of a circuit, in which the electric wiper motor is intermittently connectable to an electric power source by a relaxation oscillator circuit which includes a unijunction transistor.

Correctable and adjustable high-precision relaxation oscillator

Abstract: The utility model discloses a correctable and adjustable high-precision relaxation oscillator. The correctable and adjustable high-precision relaxation oscillator comprises an oscillation generator, a high-precision current bias generator, a voltage regulator, and a driving and output part, wherein the high-precision current bias generator provides bias for a constant current source in the oscillation generator, and the voltage regulator generates two threshold levels for a comparator in the oscillation generator; and the oscillation generator generates oscillation waveform through utilizing the charging and discharging of a capacitor and provides the oscillation waveform to the driving and output part. The correctable and adjustable high-precision relaxation oscillator of the utility model has the advantages that through the realization of high precision bias current and the correction and adjustment of a register which performs comparison on the threshold levels, process deviations and changes of the frequency of the oscillator when power source voltage or environment temperature changes can be decreased, such that corrected frequency values can satisfy accuracy requirements of design.