• 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
$doc.title

... 1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated condition ...
- Armstrong Fluid Technology
- Armstrong Fluid Technology

view pdf - AMETEK Programmable Power
view pdf - AMETEK Programmable Power

An All-Solid-State pH Sensor Employing Fluorine
An All-Solid-State pH Sensor Employing Fluorine

LT1996 - Precision, 100µA Gain Selectable Amplifier
LT1996 - Precision, 100µA Gain Selectable Amplifier

... and draws only 100µA supply current on a 5V supply. The output swings to within 40mV of either supply rail. The internal resistors have excellent matching characteristics; variation is 0.05% over temperature with a guaranteed matching temperature coefficent of less than 3ppm/°C. The resistors are al ...
Building Wire Systems - Copper Development Association Inc.
Building Wire Systems - Copper Development Association Inc.

Digital Electronics Demystified - (Malestrom)
Digital Electronics Demystified - (Malestrom)

ORBIS PRODUCT GUIDE
ORBIS PRODUCT GUIDE

... Multisensor smoke detectors are recognised as good detectors for general use but are additionally more sensitive to fast burning, flaming fires–including liquid fires–than optical detectors. They can be readily used instead of optical smoke detectors but should be used as the detector of choice for ...
Avoid Generator and System Damage Due to a Slow Synchronizing
Avoid Generator and System Damage Due to a Slow Synchronizing

Relay Selection Guide
Relay Selection Guide

Agilent 33500 Series Operating and Service Guide
Agilent 33500 Series Operating and Service Guide

... in the lower left corner of front panel. The instrument runs a power-on self test and then displays a message about how to obtain help, along with the current IP address. It also displays the GPIB address if the GPIB option is installed and enabled. The instrument's default function is a 1 kHz, 100 ...
idt74sstubf32868a - Integrated Device Technology
idt74sstubf32868a - Integrated Device Technology

... the JEDEC standard for SSTL_18, except the chip-select gate-enable (CSGEN), control (C), and reset (RESET) inputs, which are LVCMOS. All outputs are edge-controlled circuits optimized for unterminated DIMM loads, and meet SSTL_18 specifications, except the open-drain error (QERR) output. The IDT74SS ...
PACSystems RX3i Controllers
PACSystems RX3i Controllers

... High Availability CPU Redundancy family allows critical application or process to continue operating if a failure occurs in any single component. A High Availability system uses two or more CPUs; an active unit that actively controls the process, and one or more backup units that are synchronized wi ...
Descriptive Bulletin 451-30
Descriptive Bulletin 451-30

... stainless-steel spring provides high-speed elongation of arc when fuse cartridge operates. ...
user manual
user manual

... All shutters are driven by the Oriel Model 76995 Shutter Controller and are equipped with a solid state synchronization system that provides, through the controller, precise shutter transfer information. Each shutter is specified for maximum and continuous operating frequency. If the shutter is driv ...
Basic Electronics Engineering
Basic Electronics Engineering

Chapter 25 - Computers and Sensors
Chapter 25 - Computers and Sensors

... language alphabet can be translated into a combination of binary 0s and 1s for the digital computer. A digital computer changes the analog input signals (voltage) to digital bits (binary digits) of information through an analog-to-digital (AD) converter circuit. The binary digital number is used by ...
VTU : Jan.-10 - Technical Publications
VTU : Jan.-10 - Technical Publications

FR-F800 Installation Guidelines
FR-F800 Installation Guidelines

...  Make sure that the start signal is off before resetting the inverter alarm. A failure to do so may restart the motor suddenly.  Do not use a PM motor for an application where the PM motor is driven by its load and runs at a speed higher than the maximum motor speed.  The inverter can be started ...
MPC8572E PowerQUICC III Integrated Processor Hardware
MPC8572E PowerQUICC III Integrated Processor Hardware

... — Performance monitor facility that is similar to, but separate from, the MPC8572E performance monitor The e500 defines features that are not implemented on this device. It also generally defines some features that this device implements more specifically. An understanding of these differences can b ...
Audio Power Amplifier Design Handbook, Fifth Edition
Audio Power Amplifier Design Handbook, Fifth Edition

... Origins and aims.................................................................................................................. 1 The study of amplifier design ....................................................................................................... 3 Misinformation in audio ........ ...
1746-HSCE2 - Qualitrol
1746-HSCE2 - Qualitrol

... configurations, and the placement of components in each location. Decide at this time whether each chassis will have it’s own controller or a networked solution. SLC 500 processors are available with a large range of memory sizes (1 K through ...
Q Series Large Type Base Unit / I/O Module / Blank Cover User`s
Q Series Large Type Base Unit / I/O Module / Blank Cover User`s

a Low Voltage, Low Power, Factory-Calibrated 16-/24-Bit Dual AD7719
a Low Voltage, Low Power, Factory-Calibrated 16-/24-Bit Dual AD7719

AD7730/7730L Data Sheet
AD7730/7730L Data Sheet

... operates from a single +5 V supply. It accepts four unipolar analog input ranges: 0 mV to +10 mV, +20 mV, +40 mV and +80 mV and four bipolar ranges: ± 10 mV, ± 20 mV, ± 40 mV and ± 80 mV. The peak-to-peak resolution achievable directly from the part is 1 in 230,000 counts. An on-chip 6-bit DAC allow ...
< 1 ... 22 23 24 25 26 27 28 29 30 ... 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