• 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
Programmable DC electronic load Constant Current Constant
Programmable DC electronic load Constant Current Constant

... can be synchronized with an internal or external singal , to accomplish dynamic and precise test which can save cost for users. Users can edit step value, pulse width and slope sequence and meet a complex test request . A list file includes following parameters : file name ...
multiplex signal generator ksg3420/3421
multiplex signal generator ksg3420/3421

An Approach to Implement Lamp Dimmer System Using PSoC 3
An Approach to Implement Lamp Dimmer System Using PSoC 3

STL23NM60ND
STL23NM60ND

... 1. The value is rated according to Rthj-case 2. Pulse width limited by safe operating area 3. When mounted on FR-4 board of inch², 2oz Cu 4. ISD ≤ 19.5 A, di/dt ≤ 400 A/µs, VPeak < V(BR)DSS ...
Section 26 05 05 High Voltage Cables
Section 26 05 05 High Voltage Cables

VISHAY SI786 datasheet
VISHAY SI786 datasheet

D Series - Dual-Lite
D Series - Dual-Lite

... Designed for indoor installation in commercial or industrial applications. ...
increase of the grid integration of decentralized power plants by the
increase of the grid integration of decentralized power plants by the

... executes a switching operation within a few seconds if the voltage deviates from an individually defined setpoint. This fast controllable step-up transformer can be used in configuration with single generating units e.g. wind turbine, but also in application as central farm transformer. Based on its ...
MAX7440/MAX7441/MAX7442 6-Channel Integrated Video Reconstruction Filters General Description
MAX7440/MAX7441/MAX7442 6-Channel Integrated Video Reconstruction Filters General Description

... reconstruction filters replace 30 or more discrete components. The devices are ideal for digital-to-analog converter (DAC) video reconstruction applications, when analog video is reconstructed from a digital data stream. The MAX7440/MAX7441/MAX7442 operate from a single +5V power supply. The inputs ...
Chaos and Determinism
Chaos and Determinism

FEATURES APPLICATIONS DESCRIPTION
FEATURES APPLICATIONS DESCRIPTION

... These pins are used to sense the inductor phase current. Inductor current can be sensed with an external current sense resistor or by using an external R-C circuit and the inductor's DC resistance. The traces for these signals must be connected directly at the current sense element. See Layout Guide ...
XC2000 Logic Cell Array Families
XC2000 Logic Cell Array Families

Poster_AMICSA_2016_V3
Poster_AMICSA_2016_V3

Design and Construction of Microcontroller
Design and Construction of Microcontroller

... This paper demonstrates the eight line telephone systems with full signaling and switching functions similar to those of the central office systems. The eight telephones are connected to the switching devices and common line. In microcontroller system, PIC16F877A microcontroller is utilized to contr ...
Simulation Lab
Simulation Lab

... Calculate the resistance of Resistor 1 (R1), resistance of Resistor 2 (R2), and the total resistance connected to the battery. ...
A1304
A1304

... the amount of thermal noise in the Hall sensor IC while completely removing the modulated residue resulting from the chopper operation. The chopper stabilization technique uses a high frequency sampling clock. For demodulation process, a sample and hold technique is used. This high-frequency operati ...
McGruer.
McGruer.

ACTIVE LEARNING ASSIGNMENT
ACTIVE LEARNING ASSIGNMENT

... being tested. The scale selected is usually displayed on the meter face. (a) Note that the display indicates “4,” meaning that this range can read up to 4 volts. (b) The range is now set to the 40 volt scale, meaning that the meter can read up to 40 volts on the scale. Any reading above this level w ...
automatic transformer winding resistance meter
automatic transformer winding resistance meter

AG4905193198
AG4905193198

INSTALLATION AND OPERATION
INSTALLATION AND OPERATION

Poster presentations given for ARCS
Poster presentations given for ARCS

Comparison of Rectifier Circuits for Energy Harvesting Systems
Comparison of Rectifier Circuits for Energy Harvesting Systems

... dissipation of each transistor under the assumption that all the transistors inside the rectifier have  exact equal values of , ,  and . Note that at any conduction time, only one high side and one low  side transistor are conducting, depending on the input voltage value. Therefore  and  only model  ...
Evaluates: MAX8600/MAX8601 MAX8601 Evaluation Kit General Description Features
Evaluates: MAX8600/MAX8601 MAX8601 Evaluation Kit General Description Features

... MAX8601 single-cell, linear Li+ battery charger. The EV kit operates from either a 100mA/500mA USB port or a 4.15V to 14V input power supply; however, charging is disabled when the input voltage exceeds 7V. Charging is optimized for Li+ cells using a control algorithm that includes low-battery prech ...
A New Energy Recovery Circuit for the Capacitive Load using the
A New Energy Recovery Circuit for the Capacitive Load using the

< 1 ... 1116 1117 1118 1119 1120 1121 1122 1123 1124 ... 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