• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Design of CMOS Inverter Using Different Aspect Ratios
Design of CMOS Inverter Using Different Aspect Ratios

... important of which is the much lower power dissipation of CMOS circuits. Generally all parameters of CMOS are depending on the w/l ratio. Analysis the parameters of CMOS after changing in the w/l ratio. CMOS parameters change when w/l ratio is followed. 1. w = 1 µm, & L = 1 µm 2. w= 0.5 µm & L=1 µm ...
An electronically tunable linear or nonlinear MOS resistor
An electronically tunable linear or nonlinear MOS resistor

... is often useful in creating building blocks in electrical models of physical systems. Electronically tunable resistors may be obtained using MOS transistors. In the past, MOS resistors with approximately linear I–V characteristics were obtained by operating the transistor in the ohmic (triode) regio ...
J.M. Rivas, Y. Han, O. Leitermann, A.D. Sagneri, and D.J. Perreault, A High-Frequency Resonant Inverter Topology with Low Voltage Stress,” IEEE Transactions on Power Electronics , Vol. 23, No. 4, pp. 1759-1771, July 2008.
J.M. Rivas, Y. Han, O. Leitermann, A.D. Sagneri, and D.J. Perreault, A High-Frequency Resonant Inverter Topology with Low Voltage Stress,” IEEE Transactions on Power Electronics , Vol. 23, No. 4, pp. 1759-1771, July 2008.

... switch, 50% duty cycle). In practical implementations, with operating frequencies reaching into the VHF range, the capaciof the class E circuit of Fig. 1 is oftentimes solely protance vided by the semiconductor drain-to-source capacitance. The non-linear variation of the device capacitance with drai ...
汉王PDF转换RTF文档
汉王PDF转换RTF文档

Efficiency of Solid State Photomultipliers in Photon Number Resolution
Efficiency of Solid State Photomultipliers in Photon Number Resolution

... not so clear. Ultra-low excess noise factor Fm ~ 1.01 – 1.05 of Geiger mode avalanche limited by negative feedback (quenching) was observed in many reports for SSPM of different types. It was measured in correspondence with (5) applied in the most cases to single electron peak of charge / gain / pul ...
TPA2036D1 数据资料 dataSheet 下载
TPA2036D1 数据资料 dataSheet 下载

... common-mode feedback ensures that the common-mode voltage at the output is biased around VDD/2 regardless of the common-mode voltage at the input. The fully differential TPA2036D1 can still be used with a single-ended input; however, the TPA2036D1 should be used with differential inputs when in a no ...
08 SFT2841 connected..
08 SFT2841 connected..

Analog Devices Welcomes Hittite Microwave Corporation
Analog Devices Welcomes Hittite Microwave Corporation

TSUS6402 Datasheet
TSUS6402 Datasheet

LM3429 LM3429-Q1 N-Channel Controller for Constant Current
LM3429 LM3429-Q1 N-Channel Controller for Constant Current

... method for regulating output current while maintaining high system efficiency. The LM3429 uses a Predictive Offtime (PRO) control architecture that allows the regulator to be operated using minimal external control loop compensation, while providing an inherent cycle-by-cycle current limit. The adju ...
TGA2502 数据资料DataSheet下载
TGA2502 数据资料DataSheet下载

... Assembly Process Notes Reflow process assembly notes: ...
FDMF6707V — Extra-Small, High-Performance, High-Frequency DrMOS Module FDMF6707V — Extra-Small High-Performa Benefits
FDMF6707V — Extra-Small, High-Performance, High-Frequency DrMOS Module FDMF6707V — Extra-Small High-Performa Benefits

... Module Switching Frequency, fSW (kHz) ...
IOSR Journal of Electrical And Electronics Engineering (IOSRJEEE)
IOSR Journal of Electrical And Electronics Engineering (IOSRJEEE)

Manufacturer Specifications – What do they Mean
Manufacturer Specifications – What do they Mean

orta geri̇li̇m şalt tesi̇si̇
orta geri̇li̇m şalt tesi̇si̇

AN9741: Basic DACs for Electronic Engineers
AN9741: Basic DACs for Electronic Engineers

Transients in Power Systems - Purdue e-Pubs
Transients in Power Systems - Purdue e-Pubs

... This paper provides an introduction to wavelets and their application for power systems transients. Since wavelets are a relatively new development in engineering, a brief history will be presented for the sake of the uninitiated. An overview of the Integral Wavelet Transform, the Discrete Wavelet T ...
D6000 MesCom User Guide
D6000 MesCom User Guide

SN65LVDS122 数据资料 dataSheet 下载
SN65LVDS122 数据资料 dataSheet 下载

... tPZL ...
Crompton Instruments Integra and Paladin Transducers
Crompton Instruments Integra and Paladin Transducers

PAM2810 Description Pin Assignments
PAM2810 Description Pin Assignments

... The PAM2810 equips over temperature protection. When the junction temperature (TJ) exceeds +150°C, the current source turns off automatically. The device will turn on again after the IC’s TJ cools down under +125°C. Operating at absolute maximum temperature is not recommended. ...
LTC3406/LTC3406-1.5/LTC3406-1.8
LTC3406/LTC3406-1.5/LTC3406-1.8

... current to prevent core saturation. Thus, a 720mA rated inductor should be enough for most applications (600mA + 120mA). For better efficiency, choose a low DC-resistance inductor. The inductor value also has an effect on Burst Mode operation. The transition to low current operation begins when the ...
datasheet
datasheet

... If it is not practical to shield power conductors, Best Control Inc recommends shielding all logic-level leads. If shielding of logic leads is not practical, the user should twist all logic leads with themselves to minimize induced noise. It may be necessary to earth ground the shielded cable. If no ...
VHDL Synthesis for High-Reliability Systems
VHDL Synthesis for High-Reliability Systems

power quality: harmonics in power systems
power quality: harmonics in power systems

< 1 ... 443 444 445 446 447 448 449 450 451 ... 2207 >

Resistive opto-isolator



Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a ""memory effect"": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report