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Relaxation oscillator

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


Papers
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Patent
14 Aug 2013
TL;DR: In this paper, a comparator consisting of a voltage generator, a buffer unit and a threshold control loop is used to regulate a transition threshold of the buffer unit to close to the second input signal.
Abstract: A comparator is provided. The comparator includes a voltage generator, a buffer unit and a threshold control loop. The voltage generator provides a reference voltage according to a constant current. The buffer unit provides an output signal according to a first input signal and a bias signal. The threshold control loop provides the bias signal to the buffer unit according to a second input signal, so as to regulate a transition threshold of the buffer unit to close to the second input signal. The output signal represents a compare result of the first and second input signals. The buffer unit and the threshold control loop are powered by the reference voltage.

3 citations

Patent
30 Jan 2013
TL;DR: In this article, a relaxation oscillator for generating an output clock signal includes an RC circuit, a self-biased comparator stage, and a logic circuit, which is used to generate first and second comparator output signals.
Abstract: A relaxation oscillator for generating an output clock signal includes an RC circuit, a self-biased comparator stage, and a logic circuit The RC circuit generates first and second comparator input signals that are provided to the self-biased comparator stage The self-biased comparator stage includes first and second input stages and a voltage reference circuit Each of the first and second input stages in conjunction with the voltage reference circuit forms a comparator, ie, first and second comparators corresponding to the first and second input stages, respectively The self-biased comparator stage generates first and second comparator output signals, based on the first and second comparator input signals The first and second comparator output signals are provided to the logic circuit that generates the output clock signal

3 citations

Patent
23 Nov 2005
TL;DR: An apparatus for determining body impedance comprising: first and second electrodes suitable for being electrically coupled to the body; and a variable frequency relaxation oscillator coupled to electrodes; wherein, the period of oscillation is indicative of the body impedance.
Abstract: An apparatus for determining body impedance comprising: first and second electrodes suitable for being electrically coupled to the body; and a variable frequency relaxation oscillator coupled to the electrodes; wherein, the period of oscillation is indicative of the body impedance.

3 citations

Patent
12 Oct 1983
TL;DR: In this paper, a feedback circuit consisting of a feedback capacitor (17) is connected between a junction of a tuning diode and a correcting capacitor (11) connected in series therewith and the emitter of an oscillation transistor through the feedback capacitor.
Abstract: An oscillator circuit suitable for use in a local oscillator of a tuner of a television receiver set. A feedback circuit comprised of a feedback capacitor (17) is connected between a junction of a tuning diode (10) and a correcting capacitor (11) connected in series therewith and the emitter of an oscillation transistor (1). Oscillation voltage developing across the correcting capacitor is fedback to the emitter of the oscillation transistor through the feedback capacitor. When the tuning diode is conditioned to have a large capacitance value, a large oscillation voltage is fedback to the transistor through the feedback capacitor whereas when the tuning diode is conditioned to have a small capacitance value, a small oscillation voltage is fedback to the transistor through the feedback capacitor. The oscillator circuit continues to oscillate stably over a wide frequency range whenever the tuning diode changes from the small capacitance value to the large capacitance value or vice versa.

3 citations

Patent
29 Jul 1969
TL;DR: A voltage controlled oscillator capable of producing a squarewave pulse repetition frequency, characterized by a constant percentage change in square-wave PRF at the output per volt change at the input, is described in this article.
Abstract: A voltage controlled oscillator capable of producing a squarewave pulse repetition frequency, and characterized by a constantpercentage change in square-wave PRF at the output per volt change at the input. The VCO includes a limiter, integrator and Schmitt trigger connected seriatim.

3 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202322
202242
202128
202044
201962
201855