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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.


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Patent
Uichi Sekimoto1
14 Sep 2004
TL;DR: In this article, a voltage comparing circuit is proposed to activate a first voltage comparison signal when a control voltage is lower than a first reference voltage, and a second voltage comparison signals when the controller voltage is higher than a second reference voltage.
Abstract: A voltage comparing circuit activates a first voltage comparison signal when a control voltage is lower than a first reference voltage and a second voltage comparison signal when the control voltage is higher than a second reference voltage. In synchronization with a count clock, a counter decrements a counter value during activation of the first voltage comparison signal and increments the counter value during activation of the second voltage comparison signal. An oscillating circuit selects one of oscillation frequency bands by the counter value and regulates an oscillation frequency according to the control voltage within the selected oscillation frequency band to output an output clock. This makes it possible to secure a wide oscillation frequency range in response to variance in operating conditions or a reduction in a range of the control voltage and to regulate the oscillation frequency of the voltage controlled oscillator by the control voltage alone.

7 citations

Patent
02 Apr 2014
TL;DR: In this paper, a CMOS relaxation oscillator with temperature and process self-compensating characteristics is presented, which can overcome the defects of high cost, low reliability, great process deviation and the like in the prior art for realizing the advantages of low cost, high reliability and small process deviation.
Abstract: The invention discloses a CMOS (complementary metal oxide semiconductor) relaxation oscillator with temperature and process self-compensating characteristics. The CMOS relaxation oscillator comprises a reference source, a capacitor charge and discharge circuit, a first comparator, a second comparator and an SR (set reset) latch, wherein the reference current of the reference source is connected with the capacitor charge and discharge circuit, the reference voltage of the reference source is respectively connected with the same-phase input end of the first comparator and the same-phase input end of the second comparator, the reverse-phase input end of the first comparator and the reverse-phase input end of the second comparator are respectively connected with the capacitor charge and discharge circuit, the output end of the first comparator is connected with the R end of the SR latch, and the output end of the second comparator is connected with the S end of the SR latch. The CMOS relaxation oscillator with temperature and process self-compensating characteristics can overcome the defects of high cost, low reliability, great process deviation and the like in the prior art for realizing the advantages of low cost, high reliability and small process deviation.

7 citations

Proceedings ArticleDOI
11 Jun 1991
TL;DR: The authors demonstrate that the 4-b analog to digital (A/D) converter problem, the 10-city traveling salesman problem and the associative memory problem can be solved by the proposed neural network.
Abstract: The authors propose the oscillator neural network, in which the sigmoid nonlinearity of the Hopfield neural network is replaced by the Van der Pol oscillator. The oscillator neural network has the advantage that no simulated annealing is necessary to obtain a reasonable solution. They demonstrate that the 4-b analog to digital (A/D) converter problem, the 10-city traveling salesman problem and the associative memory problem, can be solved by the proposed neural network. >

7 citations


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