Topic
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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TL;DR: The behavior of relaxation oscillations in the presence of a nonlinear loss was used to determine the relevant parameters of an intracavity frequency-doubled and mode-locked YAG laser as discussed by the authors.
Abstract: The behavior of relaxation oscillations in the presence of a nonlinear loss was used to determine the relevant parameters of an intracavity frequency‐doubled and mode‐locked Nd : YAG laser The acousto‐optic mode locker was used in a controlled manner to excite the relaxation oscillations which allowed the measurement of the damping time and frequency Laser output power at 053 μm and damping time is consistent with recent theory
6 citations
TL;DR: In this article, a new topology for divide-by-three injection-locked frequency divider based on relaxation oscillator is reported, which is designed and implemented in a 90 nm CMOS process technology.
Abstract: In this letter, a new topology for divide-by-3 injection-locked frequency divider based on relaxation oscillator is reported. A prototype is designed and implemented in a 90 nm CMOS process technology. The measurement results demonstrate a locking range of 0.4-1.4 GHz with a power consumption of 30 μW.
6 citations
TL;DR: In this paper, the spectrum of a cw field the phase of which experiences a periodic sawtooth modulation is analyzed, and two types of the saw-tooth phase modulation are considered.
Abstract: The spectrum of a cw field the phase of which experiences a periodic sawtooth modulation is analyzed. Two types of the sawtooth phase modulation are considered. One is created by combining many harmonics of the fundamental frequency. The second is produced by an electro-optic modulator fed by the relaxation oscillator, which generates a voltage slowly rising during charging of the energy storage device and dropping fast due to discharge by a short circuit. It is proposed to filter out the main spectral component of the sawtooth phase-modulated field. This filtering produces short pulses from the phase-modulated cw field. The duty cycle of this train is equal to the modulation period, while duration of the pulses depends on the rate of the phase drop. In the case of harmonics, this duration is $4N+2$ shorter than the period of the fundamental frequency, where $N$ is the number of the harmonics. In the case of the charge and discharge, duration of the pulses is close to ${T}_{D}/2$, where ${T}_{D}$ is a drop time of the phase in the discharge period. Depending on the modulation frequency, the proposed method is capable to produce pulses with duration ranging from nanoseconds to a fraction of a picosecond.
6 citations
Patent•
14 May 1974TL;DR: In this article, the charging and discharging currents for the coupling capacitor are supplied by a current source circuit the two outputs of which are connected each to a terminal of the capacitor.
Abstract: Emitter-coupled astable multivibrator in which the charging and discharging currents for the coupling capacitor are supplied by a current source circuit the two outputs of which are connected each to a terminal of the capacitor. This current source circuit comprises a differential stage and a four-quadrant multiplier.
6 citations
01 Jan 2009
TL;DR: In this article, the authors present new applications for the gate-controlled diode working in the breakdown regime, based on the special transfer characteristic having linear portions and switching with hysteresis features.
Abstract: The paper presents new applications for the gate-controlled diode working in the breakdown regime. The proposed circuits are based on the special transfer characteristic having linear portions and switching with hysteresis features. Two examples are given, namely the follower amplifier and the relaxation oscillator.
6 citations