Closed-loop Dual Comparator and Its Applications

Valerie, Theodora; Garinto, Dodi; Budiyanto, Setiyo; Syahriar, Ary; Wijaya, F. Danang

doi:10.1109/icecie52348.2021.9664733

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Improvements To the Original Version Of The Test Board1

Introduction1

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2023

2024

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Cited by 2 publications

(2 citation statements)

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“…For example, this component is used in [3] to capture signals on a CAN bus and feed them to an FPGA for further processing. A high frequency, high power density, and high efficiency relaxation oscillator in [4] is also based on the TLV3501. Finally, the same comparator is used in [5] as part of a pulse generator for a high-frequency ultrasound system.…”

Section: Improvements To the Original Version Of The Test Boardmentioning

confidence: 99%

50 Ω driver circuits for digital signals: Revised test board and new measurement data

Küpper

2024

Data in Brief

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Section: Improvements To the Original Version Of The Test Boardmentioning

confidence: 99%

50 Ω driver circuits for digital signals: Revised test board and new measurement data

Küpper

2024

Data in Brief

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“…Op-Amp-based oscillator designs, including the quadrature oscillators, are studied and discussed in more detail in the previous papers [13]- [18], [19]- [24]. Also, a relaxation oscillator based on a closed-loop dual comparator with a voltage divider has been investigated in recent times [25]. For a long time, a typical triangular wave generator circuit can be built with a combination of Op-Amp and comparator, as shown in Figure 1 [26]- [28].…”

Section: Introductionmentioning

confidence: 99%

A novel triangular wave quadrature oscillator without passive components for sinusoidal pulse width modulation DC-AC power conversion

Garinto¹,

Valerie

Yanto³

et al. 2023

IJECE

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In this study, a low-cost quadrature triangle oscillator using a voltage-controlled closed-loop dual operational amplifier (Op-Amp) architecture is proposed. Unlike other typical designs, this oscillator does not require any passive components. The use of an Op-Amp-based circuit is attractive for a triangle oscillator because it is more cost-effective than a microcontroller-based solution. This is especially true for sinusoidal pulse width modulation (SPWM) DC-AC power conversion applications. The slew-rate restriction of an Op-Amp is a useful characteristic for producing a triangle waveform when seen from the perspective of wave shaping techniques. The MC4558 and the JRC4558D are two examples of dual Op-Amps that are evaluated, contrasted, and described in this article. At supply voltages of +7 V and -7 V, the suggested quadrature triangle oscillator that uses Op-Amps MC4558 and JRC4558D has the same oscillation frequency, which is 63 kHz, as demonstrated by simulation and experimental data. The frequency stability is estimated to be around 0.23%. In addition, the findings from the experiment demonstrate that the proposed oscillator is a practical solution for the SPWM DC-AC power conversion application.

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Closed-loop Dual Comparator and Its Applications

Cited by 2 publications

References 14 publications

50 Ω driver circuits for digital signals: Revised test board and new measurement data

50 Ω driver circuits for digital signals: Revised test board and new measurement data

A novel triangular wave quadrature oscillator without passive components for sinusoidal pulse width modulation DC-AC power conversion

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