• 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
Faulted circuit indicator application guide COOPER POWER SERIES
Faulted circuit indicator application guide COOPER POWER SERIES

... Reliability can have many different meanings. For some, fault indicator reliability means that the fault indicator operates every time a fault occurs on the distribution circuit. However, fault indicators may operate erroneously when not applied properly. A better definition of fault indicator relia ...
Top-down Dendritic Input Increases the Gain of
Top-down Dendritic Input Increases the Gain of

... respectively. The three curves were measured from the same pyramidal cell shown in A. They were fitted with a with a threshold linear function (lines) in order to extract their gains (slope) and thresholds. (D) Summary for mean gain versus mean distance of the current injection electrode (always mea ...
SBR
SBR

... compared to a Schottky Barrier diode (SBD) with the thermal stability of a Fast Recovery diode (FRD) These advantages over existing technologies translate to… ...
A Multi-Mode Charging Circuit for Rechargeable Batteries
A Multi-Mode Charging Circuit for Rechargeable Batteries

... be revolutionarily improved, charging technology will be an important topic for research. Besides reducing charging time, the usable capacity after charging and impact on cycle life should also be taken into account. Therefore, there are several aspects of considerations for charging batteries. Alth ...
Vital Relays
Vital Relays

... Vital software and circuits to achieve an outstanding level of safety and reliability coupled with a maintenance-free design. The SSCT is capable of generating seven commonly used code rates, thereby reducing the number of types of units a user needs to stock. The SSCT design is based on the premise ...
MMU 0102, MMA 0204, MMB 0207
MMU 0102, MMA 0204, MMB 0207

4.2 Terminal Characteristics of Junction Diodes
4.2 Terminal Characteristics of Junction Diodes

... Jim Stiles ...
Data Assessment for Electrical Surge Protection Devices
Data Assessment for Electrical Surge Protection Devices

MicroSim PSpice A/D
MicroSim PSpice A/D

CMOS Analog Design Lecture Notes Rev 1.4L_1_07_09
CMOS Analog Design Lecture Notes Rev 1.4L_1_07_09

... Prof. Dr. Bernhard Hoppe ...
Ultra Linear Low-Loss Varactor Diode Configurations for Adaptive RF Systems
Ultra Linear Low-Loss Varactor Diode Configurations for Adaptive RF Systems

... tone-spacing varactor stack are compared with single diodes in Table I in terms of topology, harmonic conditions, area ratio required for IM3 cancellation, total area for a given capacitance (relative to the single diode), maximum RF voltage, and linearity. It indicates that both varactor stacks, wi ...
software techniques for compensating st7 adc errors
software techniques for compensating st7 adc errors

... Before configuring the ADC and starting any conversions, you need to check the fADC maximum supported by the device. This value is documented in the ST7 datasheets, you should refer to the ADC electrical characteristics section. For example:- Some devices have a SPEED bit for working at fCPU/2 but t ...
HINP16C
HINP16C

... Further details will be provided when DAC operation is discussed later in this report. ...
6-Output Clock Generator with Integrated 2.5 GHz VCO AD9518-1 Data Sheet
6-Output Clock Generator with Integrated 2.5 GHz VCO AD9518-1 Data Sheet

HD61203U
HD61203U

... The CR oscillator generates display timing signals and operating clocks for the HD61202U. It is required when the HD61203U is used with the HD61202U. An oscillation resister Rf and an oscillation capacitor Cf are attached as shown in Figure 1. When using an external clock, input the clock into termi ...
74LVCV2G66 1. General description Overvoltage tolerant bilateral switch
74LVCV2G66 1. General description Overvoltage tolerant bilateral switch

... The 74LVCV2G66 is a low-power, low-voltage, high-speed Si-gate CMOS device. The 74LVCV2G66 provides two single pole single throw analog or digital switches. Each switch includes an overvoltage tolerant input/output terminal (pin nZ), an output/input terminal (pin nY) and low-power active HIGH enable ...
Mehta_uta_2502M_10921
Mehta_uta_2502M_10921

... RFID tag. Passive RFID tags are relatively inexpensive to purchase and to integrate into objects and devices. However, in some environments and on some objects the performance of the pure passive tags is not sufficient for the intended applications. A semi-passive tag, in comparison to a pure passiv ...
On-chip phase noise measurement, design study in 65 nm CMOS technology
On-chip phase noise measurement, design study in 65 nm CMOS technology

... Author(s) Daniyal Haider. Abstract Jitter is generally defined as a time deviation of the clock waveform from its desired position. The deviation which occurs can be on the leading or lagging side and it can be bounded (deterministic) or unbounded (random). Jitter is a critical specification in the ...
mv motor control centers rvss spec
mv motor control centers rvss spec

Contents 1 How to Read this Design Guide
Contents 1 How to Read this Design Guide

MAX14591 High-Speed, Open-Drain Capable Logic-Level Translator General Description
MAX14591 High-Speed, Open-Drain Capable Logic-Level Translator General Description

micromaster 430
micromaster 430

... Work on the device/system by unqualified personnel or failure to comply with warnings can result in severe personal injury or serious damage to material. Only suitably qualified personnel trained in the setup, installation, commissioning and operation of the product should carry out work on the devi ...
Parallel LEDs evaluation
Parallel LEDs evaluation

... Thermal Runaway (continued) Can you be sure that the Assembly Staff glued the LED PCB to the heatsink in a manner which would ensure best thermal coupling between the LEDs?… …This is one of the problems of putting LEDs in parallel, ..your assembly staff are being more heavily relied upon to assembl ...
PowerVac Switchgear Application Guide
PowerVac Switchgear Application Guide

... diagram: the preliminary diagram, followed by the partially developed diagram, and finishing with the developed diagram. The abbreviations used for principal meters, instruments, and other devices (not including relaying, which is listed in Table 2-2), as found in the application guide, are listed i ...
Form assistant for inquiry and order specifications
Form assistant for inquiry and order specifications

< 1 ... 20 21 22 23 24 25 26 27 28 ... 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