A Full-Wave Rectifier Based on Memristive Systems

Vávra, Jiří; Biolek, Dalibor

doi:10.2991/mic-15.2015.20

Cited by 2 publications

(2 citation statements)

References 14 publications

(14 reference statements)

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“…Full-wave rectifier telah diaplikasikan untuk mengurangi ripple output gelombang dengan single phase [9], pengendali arus AC/DC converter dengan pezoelectric [10], ripple pada sistem kelistrikan dengan menggunakan chopper [11], buck converter dengan sistem kendali fuzzy [12], rectifier dengan dua sistem bipolar memristive [13], kontrol frekuensi tinggi dengan floating current source dan transistor MOS [14], rectifier digunakan untuk mengendalikan arus beban R-L [15], half-wave thyristor rectifier diaplikasikan untuk mengendalikan photo voltage (PV) [16], full-wave dan half-wave rectifier diterapkan pada operational transresistance amplifier dengan 4 dioda dan resistor [17], penurunan frekuensi tinggi dan presisi full-wave rectifier pada dua beban secara simetris menggunakan resistor yang dihubungkan ke ground serta transistor MOS [18].…”

Section: Pendahuluanunclassified

Rangkaian Penyearah Gelombang Penuh Dengan Modifikasi IC Untuk Mengurangi Output Ripple Gelombang DC

Fadhil Aulia,

Mulyadi

2023

JIITEK

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Tulisan ini membahas penyearah gelombang penuh untuk mengurangi output ripple gelombang DC. Beberapa variasi filter telah diterapkan, namun output filter menghasilkan output gelombang ripple. Oleh sebab itu, variasi IC 7812, 7815, 7818 dan 7824 diusulkan untuk mengurangi output gelombang ripple. Rangkaian penyearah gelombang penuh dirancang untuk mengatur tegangan output dioda, arus output, vrms dan putaran motor dc. Hasil penerapan IC menunjukkan bahwa output ripple dapat diturunkan berdasarkan pengaturan variasi tegangan pada masing-masing IC. Semakin besar variasi tegangan output IC, maka output tegangan, arus, vrms, dan putaran motor semakin meningkat. Sedangkan output ripple menunjukkan variasi nilai 0.252, 0.023, 0.025 dan 0.023. Tegangan input tidak mempengaruhi pada rangkaian penyearah gelombang penuh walaupun tegangan output dioda, arus, rpm, vrms dan output ripple bervariasi.

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Section: Pendahuluanunclassified

Rangkaian Penyearah Gelombang Penuh Dengan Modifikasi IC Untuk Mengurangi Output Ripple Gelombang DC

Fadhil Aulia,

Mulyadi

2023

JIITEK

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“…The threshold pressure required for opening the valves and fluid inertia effects are observed at the accelerating part of the flow profile, creating a delay when compared to the theoretically obtained flow profiles. Threshold pressure depends on the valve design [45,46], and it has a similar effect on a conducting fluid as threshold voltage does on diodes [47]. Fluid inertia influences the motion of the valves by adding mass to the system [48,49] and creates a delay at the accelerating part of the flow profile.…”

Section: Improvement In Ripple Factormentioning

confidence: 99%

Flow Ripple Reduction in Reciprocating Pumps by Multi-Phase Rectification

Özkayar,

Wang,

Lötters

et al. 2023

Sensors

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Reciprocating piezoelectric micropumps enable miniaturization in microfluidics for lab-on-a-chip applications such as organs-on-chips (OoC). However, achieving a steady flow when using these micropumps is a significant challenge because of flow ripples in the displaced liquid, especially at low frequencies or low flow rates (<50 µL/min). Although dampers are widely used for reducing ripples in a flow, their efficiency depends on the driving frequency of the pump. Here, we investigated multi-phase rectification as an approach to minimize ripples at low flow rates by connecting piezoelectric micropumps in parallel. The efficiency in ripple reduction was evaluated with an increasing number (n) of pumps connected in parallel, each actuated by an alternating voltage waveform with a phase difference of 2π/n (called multi-phase rectification) at a chosen frequency. We introduce a fluidic ripple factor (), which is the ratio of the root mean square () value of the fluctuations present in the rectified output to the average fluctuation-free value of the discharge flow, as a metric to express the quality of the flow. The fluidic ripple factor was reduced by more than 90% by using three-phase rectification when compared to one-phase rectification in the 2–60 μL/min flow rate range. Analytical equations to estimate the fluidic ripple factor for a chosen number of pumps connected in parallel are presented, and we experimentally confirmed up to four pumps. The analysis shown can be used to design a frequency-independent multi-phase fluid rectifier to the desired ripple level in a flow for reciprocating pumps.

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A Full-Wave Rectifier Based on Memristive Systems

Abstract: Abstract-Precision

Cited by 2 publications

References 14 publications

Rangkaian Penyearah Gelombang Penuh Dengan Modifikasi IC Untuk Mengurangi Output Ripple Gelombang DC

Rangkaian Penyearah Gelombang Penuh Dengan Modifikasi IC Untuk Mengurangi Output Ripple Gelombang DC

Flow Ripple Reduction in Reciprocating Pumps by Multi-Phase Rectification

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