Results 11 to 20 of about 29,434 (259)
New pulse modulator with low switching frequency
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2014 The author presents an integrating pulse modulator (analogue signal converter) with the pulse frequency and duration modulation similar to sigma-delta modulation (with low switching frequency), without quantization.
V. S. Golub
doaj +1 more source
Digital calibration technique based AC injection for continuous‐time sigma‐delta converters
Electronics Letters, 2023 In this study, a digital calibration method applicable for a continuous‐time sigma‐delta analogue‐to‐digital converter is proposed using the AC injection technique.
Shengling Zhu, Lei Chen, Jie Su
doaj +1 more source
Performance Scrutiny of Two Control Schemes Based on DSM and HB in Active Power Filter [PDF]
Journal of Operation and Automation in Power Engineering, 2014 This paper presents a comparative analysis between two current control strategies, constant source power and generalized Fryze current, used in Active Power Filter (APF) applications having three different modulation methods. The Hysteresis Band (HB) and
R. Kazemzadeh +3 more
doaj
A ΣΔ Closed-Loop Interface for a MEMS Accelerometer with Digital Built-In Self-Test Function
Micromachines, 2018 Sigma-delta (ΣΔ) closed-loop operation is the best candidate for realizing the interface circuit of MEMS accelerometers. However, stability and reliability problems are still the main obstacles hindering its further development for high-end ...
Dongliang Chen +5 more
doaj +1 more source
A Driving Technique for AC-AC Direct Matrix Converters Based on Sigma-Delta Modulation
Energies, 2019 Direct conversion of AC power between three-phase systems operating at different frequencies can be achieved using solid-state circuits known as matrix converters.
Simone Orcioni +3 more
doaj +1 more source
Description of a 2-Bit Adaptive Sigma-Delta Modulation System with Minimized Idle Tones
EURASIP Journal on Advances in Signal Processing, 2007 A 2-bit adaptive sigma delta modulation system that inherently eliminates the idle tones present in conventional and other adaptive sigma delta systems is described.
G. S. Tombras, E. A. Prosalentis
doaj +1 more source
Long Term Stable Δ-Σ NDIR Technique Based on Temperature Compensation
Applied Sciences, 2019 For a fast and long term stable Non Dispersive Infrared (NDIR) technology of gas concentration measurement, the temperature compensation is required.
Chih-Hsiung Shen, Jun-Hong Yeah
doaj +1 more source
Second-order sigma-delta modulator in standard cmos technology [PDF]
Serbian Journal of Electrical Engineering, 2004 As a part of wider project sigma-delta modulator was designed. It represents an A/D part of a power meter IC. Requirements imposed were: SNDR and dynamic range > 50 dB for maximum input swing of 250 mV differential at 50 Hz.
Milovanović Dragiša +2 more
doaj +1 more source
A Miniature Pockels Cell with Novel Electrode Geometry
Sensors, 2009 This paper discusses important elements of the Pockels sensing cell design. A novel electrode geometry is analyzed in order to obtain maximum sensitivity response from Pockels crystals (Bi12GeO20). This neither transversal nor truly longitudinal geometry,
Pedja Mihailovic +2 more
doaj +1 more source
FEBS Letters, EarlyView.In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai +9 more
wiley +1 more source