نتایج جستجو برای: output capacitor c

تعداد نتایج: 1234446  

1997
Omid Shoaei

A B S T R A C T A high speed bandpass continuous-time biquad filter is implemented in a 0.8l_tm BiCMOS technology. It demonstrates a wide range of frequency tunability from 25MHz-1lOMHz. The filter intermodulation distortion stays below-52dB at 5OMHz with 1OOmVP input differential signals. The power consumption (& = 5OMHz) is 90mW with a single 5V supply. 1. INTRODUCTION The transconductor-capa...

2008
Marius BUDĂEŞ Liviu GORAŞ

An inductorless switched capacitor (SC) DC-DC voltage converter and a model based on the averaging technique are presented. The model was validated through circuit level simulations for a SC converter designed using CMOS 0.18 um technology, capable to deliver output currents up to 100 mA at a regulated low ripple 3.3 V output voltage, for input voltages between 1.8 V and 3.2 V and can be used f...

2001
J. L. Rossello Jaume Segura

We present a simple and accurate model to compute the power dissipated in sub-micron CMOS buffers driving RC interconnect lines. The expression obtained accounts for the main effects in current sub-micron CMOS technologies as carrier velocity saturation effects, input-output coupling capacitor, output load, input slew time, device sizes and interconnect resistance. Results are compared to HSPIC...

2010
M. Jamil S. M. Sharkh M. Abusara R. J. Boltryk

This paper discusses the design of a repetitive feedback controller for a grid-connected two-level three-phase voltagesource inverter connected between a DC source and the grid through an LCL filter. The controller incorporates a classical two loop feedback of the output current and the capacitor current in addition to a repetitive feedback loop. The results show that the proposed technique imp...

2014
Longjie Du Yizhong Yang Yang Chen Guangjun Xie Xin Cheng

An ultra-low quiescent current low-dropout regulator with small output voltage variations and improved load regulation is presented in this paper. It makes use of dynamically-biased shunt feedback as the buffer stage and the LDO regulator can be stable for all load conditions. The proposed structure also employs a momentarily current-boosting circuit to reduce the output voltage to the normal v...

2012
H. Gao N. Onozawa S. Wu S. N. Mohyar Z. Nosker H. Kobayashi N. Takai K. Niitsu

D1 D2 S2 Abstract—This paper proposes two types of non-isolated direct AC-DC converters. First, it shows a buck-boost converter with an H-bridge, which requires few components (three switches, two diodes, one inductor and one capacitor) to convert AC input to DC output directly. This circuit can handle a wide range of output voltage. Second, a direct AC-DC buck converter is proposed for lower o...

2015
O. Malik F. J. De la Hidalga-W

This work shows that the direct PWM output electric signal, with a duty cycle controlled by light intensity, can be obtained using a circuit containing a saw-tooth voltage generator connected in series with a dc voltage source and a metal (semitransparent gate) oxide semiconductor capacitor (MOS-C). The internal PWM signal conversion occurs by the use of non-equilibrium physical processes in th...

Journal: :مهندسی بیوسیستم ایران 0
آذر خورسندی کارشناسی ارشد، دانشگاه صنعتی اصفهان عباس همت استاد، دانشگاه صنعتی اصفهان امین اله معصومی استادیار، دانشگاه صنعتی اصفهان رسول امیرفتاحی استادیار، دانشگاه صنعتی اصفهان

soil compaction and moisture content are two of the factors that greatly influence variations in crop yield. capacitance-based sensor is a sensitive device for estimating soil water content. in this method of soil moisture content measurement, soil acts as the dielectric of the capacitor. throughout this research work, a capacitance-based moisture sensor that can measure the soil moisture conte...

2013
Pradeep Kumar Sandhya Kamat

-Multilayer ceramic chip capacitor CDR-05 (MIL part number) is one of the most used parts in ISRO’s satellite program. Cracks evolved in ceramic chip capacitors CDR-05 (size: 1825and dielectric: X7R) of two different makesduring soldering process are studied in this paper. It has been observed that CDR-05 capacitors of one particular make (Manufacturer-A) more prone to crack during soldering on...

2006
Michael D. Seeman

Switched-capacitor DC-DC converters are useful alternatives to inductor-based converters in many lowpower and medium-power applications. This work develops a straightforward analysis method to determine a switched-capacitor converter’s output impedance (a measure of performance and power loss). This resistive impedance is a function of frequency and has two asymptotic limits, one corresponding ...

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