• 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
OTB1C0DM9LP - Schneider Electric
OTB1C0DM9LP - Schneider Electric

... 0.035 ms for I0...I1 at state 1 0.035 ms for I6...I7 at state 1 0.04 ms for I2...I5 at state 1 0.04 ms for I8...I11 at state 1 0.045 ms for I0...I1 at state 0 0.045 ms for I6...I7 at state 0 0.15 ms for I2...I5 at state 0 0.15 ms for I8...I11 at state 0 ...
DC/DC Converter Design for PV
DC/DC Converter Design for PV

... for the PV-battery powered water pump system is proposed with experimental verification. With reduced number of active switches and controls, the main functions such as MPPT and driving the motor within certain speed range can still be realised without sacrificing the overall efficiency as compared ...
COST 286 – Joint technical action 1 (JTA1)
COST 286 – Joint technical action 1 (JTA1)

... wire length of 1m is considered as an illustration of the method. The results for current distribution along the wire are also presented if antenna is fixed in x=50 cm position. ...
DESIGN AND CONSTRUCTION OF FIRING CIRCUIT FOR THREE
DESIGN AND CONSTRUCTION OF FIRING CIRCUIT FOR THREE



... Generally a 0.1µ-0.22µF snubber between the P-N1 terminals is recommended. (4) If high frequency noise superimposed to the control supply line, IC malfunction might happen and cause DIPIPM erroneous operation. To avoid such problem happens, line ripple voltage should meet the following specification ...
resistor combinations
resistor combinations

... This capacitor is used when a higher tolerance is necessary than polyester capacitors offer. Polypropylene film is used for the dielectric. There is no change of capacitance in these devices if they are used with frequencies of 100KHz or less. The pictured capacitors have a tolerance of ±1%. ...
Physics Review #1
Physics Review #1

R 0
R 0

... connected by two wires.Define a voltage Voc as the opencircuit voltage which appears across the terminals of A when B is disconnected.Then all currents and voltages in B will remain unchanged if all independent voltage and current sources in A are “zeroed out”,and an independent voltage source Voc i ...
AD8564 数据手册DataSheet 下载
AD8564 数据手册DataSheet 下载

... Minimizing resistance from the source to the input is an important consideration in maximizing the high speed operation of the AD8564. Source resistance, in combination with equivalent input capacitance, may cause a lagged response at the input, thus delaying the output. The input capacitance of the ...
Active Physics: Electricity
Active Physics: Electricity

06-1-فراس الحجه و عبد الرحمن علان
06-1-فراس الحجه و عبد الرحمن علان

... Instruments used to measure smaller currents, in the milliampere or microampere range, are designated as milliammeters or microammeters. Early ammeters were laboratory instruments which relied on the Earth's magnetic field for operation. By the late 19th century, improved instruments were designed w ...
Introduction
Introduction

... other frequency. Thus a minimum gain of 1 occurs at the desired frequency, minimizing the response with respect to those at other frequencies. Although the goal of this project was to block 120Hz noise, the actual frequency of the AC noise from the output of the power supply was measured in order to ...
Document on creating a seismograph.
Document on creating a seismograph.

IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

LT Spice – Getting Started Very Quickly First Get the Latest Software
LT Spice – Getting Started Very Quickly First Get the Latest Software

BDTIC www.BDTIC.com/infineon  TLV4906K
BDTIC www.BDTIC.com/infineon TLV4906K

... Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Target Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Optimizing The Load Transient Response Of The Buck Converter
Optimizing The Load Transient Response Of The Buck Converter

... The smaller the ESR is, the more expensive the capacitor will be. Therefore, it makes economical sense to select a capacitor which has a worst-case ESR that is just below the limit determined by the transient tolerance specifications, e.g., the ones shown in Table I. Accordingly, the optimal load t ...
1760 Three-Phase Power Quality Recorder Topas
1760 Three-Phase Power Quality Recorder Topas

... power quality analysis and consistent compliance testing. Designed for analysis of utility and industrial power distribution systems, in medium and low-voltage networks, the Fluke 1760 provides the flexibility to customize thresholds, algorithms, and measurement selections. It has 8 input channels ( ...
IEEE Grounding Transformers - Levine Lectronics and Lectric
IEEE Grounding Transformers - Levine Lectronics and Lectric

... rated continuous, phase-to-phase current without exceeding its temperature limit • The higher the current, the larger and more costly the transformer • Typical values can be as low as 5 amps to as high as a few hundred • Include any auxiliary loading requirements ...
PHY 132–701 - Oakton Community College
PHY 132–701 - Oakton Community College

... q2, whose charge is –20.0 nC, sits at (0.300 m, 0.000 m). Give the electric potential (voltage) at the origin due to these two charges. ...
Adjustable LNB Power Supply Is DiSEqC Compatible
Adjustable LNB Power Supply Is DiSEqC Compatible

PLASMA TREATMENT OF LEVIGATED MATERIALS AND
PLASMA TREATMENT OF LEVIGATED MATERIALS AND

... spectroscopy methods. Preliminary tests on the abatement of heavy metals in aqueous solution were carried out. Key words: high-voltage discharge in water, plasma treatment, optical emission spectroscopy. ...
Question paper
Question paper

Document
Document

... Circuit breakers, which are now much more common in homes than they once were, are switches that will open if the current is too high; they can then be reset. ...
TO5socPCB
TO5socPCB

... Conditions: Use of sensors for industrial applications is subjected to patent rights. Xensor Integration assumes no liability arising from violation of these rights Warranty: Xensor Integration warrants its products against defects in materials and workmanship for 12 months from date of shipment. Pr ...
< 1 ... 1483 1484 1485 1486 1487 1488 1489 1490 1491 ... 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