• 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
User`s Guide DM3068 Digital Multimeter
User`s Guide DM3068 Digital Multimeter

Document
Document

Cree, CMPA2735075F 75W, 2.7-3.5GHz GaN HEMT MMIC (Cree
Cree, CMPA2735075F 75W, 2.7-3.5GHz GaN HEMT MMIC (Cree

... no warranty, representation or guarantee regarding the suitability of its products for any particular purpose. “Typical” parameters are the average values expected by Cree in large quantities and are provided for information purposes only. These values can and do vary in different applications, and ...
provisional model answer key (electrical engineering and
provisional model answer key (electrical engineering and

RIGOL User’s Guide DM3068 Feb. 2014
RIGOL User’s Guide DM3068 Feb. 2014

... HI and LO terminals are used for Voltage, Resistance, Capacitance, Continuity, Frequency and Diodes measurements and should be used under the following two conditions: 1) HI-LO protection limit: at most 1000 VDC or 750 VAC, this is also the maximum measurable voltage. The limit can be expressed as 1 ...
tps3808g33.pdf
tps3808g33.pdf

... voltage threshold and reset delay time adjustments are available, allowing these devices to be used in a wide array of applications. Reset threshold voltages can be factory-set from 0.82V to 3.3V or from 4.4V to 5.0V, while the TPS3808G01 can be set to any voltage above 0.405V using an external resi ...
Load representation for dynamic performance analysis (of power
Load representation for dynamic performance analysis (of power

... In addition, failure to represent loads in sufficient detail may produce results that miss significant phenomena. It is difficult to quantify the benefits of improved load representation. Several studies, reported in the literature, have demonstrated the impact that different load models can have on ...
Cooling and Self-Excitation of a One-Electron
Cooling and Self-Excitation of a One-Electron

LUX LITE - RG Messtechnik
LUX LITE - RG Messtechnik

... specifications: that the detector has a correct spectral response V(λ), and that it has a field of view of 180 degrees. Another way of expressing the latter directional properties is to say that the sensor has to comply with the cosine response. A perfect cosine response will show maximum sensitivit ...
"Magnetics Design 5 - Inductor and Flyback Transformer Design"
"Magnetics Design 5 - Inductor and Flyback Transformer Design"

... With a discrete gap, used with laminated metal alloy cores or ferrite cores, the winding should be directly over the gap. For example, if a pair of "C" core halves has a gap in one leg and the winding is placed on the opposite (ungapped) leg, as shown in Fig. 5-4a, the entire magnetic force introduc ...
Controlling a brush DC motor with an ST6265
Controlling a brush DC motor with an ST6265

ZMOTION Detection Module Product Specification
ZMOTION Detection Module Product Specification

... The ZMOTION Detection Module is a board-level module that combines the unique features of Zilog’s Z8FS040 Motion Detection microcontroller with a pyroelectric sensor and a lowprofile lens. The surface-mount pyroelectric sensor and lens combine to provide the lowest possible profile without sacrifici ...
Design control and protection for medium voltage switchgear  Carl-Johan Nylund
Design control and protection for medium voltage switchgear Carl-Johan Nylund

... switchgear according to my commissioner’s demands. The drawings were used for a project. The project is an engine that is not on the production line yet. The purpose is to test the engine before it will reach Wärtsila engine portfolio. It needed to be tested in different kinds of loads and frequenci ...
Chapter 3: Data Converter Architectures
Chapter 3: Data Converter Architectures

VPhase VX1 Installation Instructions - E
VPhase VX1 Installation Instructions - E

... To avoid false readings, and the risk of damage to the electronics, the VX1 should be isolated before insulation resistance testing is carried out. The VX1 unit supplies power to circuits via a transformer. You must ensure that the VX1 device is active and regulating before undertaking Earth Loop Im ...
700-2.14: Safety Relays
700-2.14: Safety Relays

Guide to Fuse Selection
Guide to Fuse Selection

Balanced Headphone Drive Balanced Drive FAQ
Balanced Headphone Drive Balanced Drive FAQ

M I C -S
M I C -S

... The encoding used for the digital control word in a current steering DAC has a large influence on the circuit performance, e.g., in terms static linearity and glitches. In this work, two DAC architectures are developed. These are denoted the decomposed and partially decomposed architectures and util ...
View/Open
View/Open

... The Purpose of this project is to make a digital circuit that would generate a police siren while mimicking the pattern of the police lights using Light Emitting Diodes (LEDs) in order to understand the digital circuitry used by the police for their police cars. This project can be taking further by ...
Robust Analytical Gate Delay Modeling for Low Voltage Circuits
Robust Analytical Gate Delay Modeling for Low Voltage Circuits

Thermal Handbook - Maxim Integrated
Thermal Handbook - Maxim Integrated

... resistance to the reference resitance. An example of a simple RTD signal-conditioning circuit is shown in Figure 6. Several variations are possible. The current source may be integrated into the ADC, or the current source may be eliminated and a voltage source may be used to provide bias to the RTD ...
A SELF-CALIBRATING LOW POWER 16
A SELF-CALIBRATING LOW POWER 16

... KSps charge redistribution successive approximation register based analog-to-digital converter (CR ADC) to be used with a sensor integrated circuit (IC) built for neurosensory application. The CR ADC uses a time-interleaving-by-2 architecture, shutting down amplifiers when not in use, and switching ...
електроника electronics - Electronics Journal
електроника electronics - Electronics Journal

... in electrical engineering. From 1978 he is with Institute for Power, Electronics & Communication Engineering of Faculty of Technical Sciences, University of Novi Sad, where he is currently Associated Professor. From 1991 he is the Head of Power Electronics and Converters Group. He was Director of th ...
Applying Interrupting Rating: Circuit Breakers
Applying Interrupting Rating: Circuit Breakers

... less to additionally be tested under “bus bar conditions.” However, this does not assure that the circuit breaker’s interrupting capacity equals its interrupting rating nor even that the circuit breaker is reusable. In this test, line and load terminals are connected to 10 inches of rated conductor. ...
< 1 ... 31 32 33 34 35 36 37 38 39 ... 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