• 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
FORM 335 - Harrisburg Area Community College
FORM 335 - Harrisburg Area Community College

BD9031FV-C
BD9031FV-C

UMC5N Features Mechanical Data
UMC5N Features Mechanical Data

ADP1877 英文数据手册DataSheet 下载
ADP1877 英文数据手册DataSheet 下载

... Output of the Internal Low Dropout Regulator (LDO). The internal circuitry and gate drivers are powered from VCCO. Bypass VCCO to AGND with a 1 μF or larger ceramic capacitor. The VCCO output is always active, even during fault conditions and cannot be turned off even if EN1/EN2 is low. For operatio ...
User`s Guide LED EVM TPS63030EVM-658
User`s Guide LED EVM TPS63030EVM-658

DM74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control
DM74LS191 Synchronous 4-Bit Up/Down Counter with Mode Control

... down counter. Synchronous operation is provided by having all flip-flops clocked simultaneously, so that the outputs change simultaneously when so instructed by the steering logic. This mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple clock) count ...


... The effective transimpedance gain is TINT /CINT. Extremely high gain that would be impractical to achieve with a conventional transimpedance amplifier can be achieved with small integration capacitor values and/or long integration times. For example the IVC102 with CINT = 100pF and TINT = 100ms prov ...
Hot Swap Device MP5022A
Hot Swap Device MP5022A

... The MP5022A provides a constant current limit that can be programmed by an external resistor from ISET pin. Once the device reaches its current limit threshold, the internal circuit regulates the gate voltage to hold the current in the power FET constant. In order to limit the current, the gate to s ...
Snappy Series and Parallel Circuits (614)
Snappy Series and Parallel Circuits (614)

1.2A Single-chip Li-ion and Li
1.2A Single-chip Li-ion and Li

Understanding Signal Integrity
Understanding Signal Integrity

LTC3400-1 - 600mA, 1.2MHz Micropower Synchronous Boost
LTC3400-1 - 600mA, 1.2MHz Micropower Synchronous Boost

... formed by L and CSW (capacitance on SW pin). Burst Mode Operation Portable devices frequently spend extended time in low power or standby mode, only switching to high power drain when specific functions are enabled. In order to improve battery life in these types of products, high power converter ef ...
HMC675LP3E 数据资料DataSheet下载
HMC675LP3E 数据资料DataSheet下载

... blocks: 1) An input amplifier, 2) A latch, and 3) An RSCML Output Buffer. The latching circuit is level sensitive, and consists of a single high-speed latch. The HMC675LP3E comparator supports 10 Gb/s operation. The minimum input data latching pulse width is 60 ps. The HMC675LP3E operates in either ...
Chap09
Chap09

... TTL IC: input, control, and output. The input current to an IC gate is a constant value specified by the manufacturer. The output current of an IC gate depends on the size of the load connected to it. Its value cannot exceed the maximum rating of the chip, IOL or IOH. ...
Translation of Sign Language to Speech
Translation of Sign Language to Speech

Transistor Basics
Transistor Basics

... VCEO: Maximum voltage the collector emitter junction can handle (40V). IC: Maximum collector current (200mA). Power Dissipation & Thermal Resistance is covered in the voltage regulator section. Hfe: The DC current gain of the transistor (depends on the collector current). VCE(SAT): The collector to ...
Topology based Radial Distribution Network and its Voltage Stability
Topology based Radial Distribution Network and its Voltage Stability

... solving such networks. Literature survey shows that a lot of work has been done on the voltage stability analysis of transmission systems have studied the voltage stability analysis of radial networks. They have represented the whole network by a single line equivalent. The single line equivalent de ...
MAX1925/MAX1926 Switch-Mode 1-Cell Li+ Chargers General Description Features
MAX1925/MAX1926 Switch-Mode 1-Cell Li+ Chargers General Description Features

... switch-mode battery chargers use an external PMOS pass element step-down configuration. Charge current is programmable, and an external capacitor sets the maximum charge time. Additional features include automatic input power detection (ACON output), logic-controlled enable, and temperature monitori ...
TPS780xxEVM-301 User`s Guide
TPS780xxEVM-301 User`s Guide

... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant ...
Introduction to MatLab: Circuit Analysis
Introduction to MatLab: Circuit Analysis

... current around a circuit. (Sometimes called “potential” as in potential energy.) • Current - the flow of electrical charge through a conductor. (Electrons flow backwards) • Conductor - the “pipe” through which an electrical current flows. Introduction to MatLab: Circuit Analysis ...
A Review on Performance Analysis of Matrix Converter
A Review on Performance Analysis of Matrix Converter

... adding three inductor, capacitor, switches and diodes. As ZSDMC permits the short circuit, the commutation process becomes simple and easy. This also reduces the voltage and current stress on the switch. The ZSDMC can reach voltage gain up to 1.15 but its inherited phase shift makes the control inac ...
STP78N75F4
STP78N75F4

... DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE ...
tayyab here
tayyab here

... HVDS project is to reconfigure the existing Low voltage (LT) network as High Voltage Distribution System, wherein the 11kV line is taken as near to the loads as possible and the LT power supply is fed by providing appropriate capacity transformer and minimum length of LT line with an objective to pr ...
Automatic power factor controllers and thyristor modules
Automatic power factor controllers and thyristor modules

... MEASUREMENTS The wide measurement range between 100 to 690VAC allows using the controller in most types of applications. Slave 8 ...
AD8065
AD8065

... performance. The differential gain and phase errors of 0.02% and 0.02°, respectively, along with 0.1 dB flatness out to 7 MHz, make these amplifiers ideal for video applications. Additionally, they offer a high slew rate of 180 V/μs, excellent distortion (SFDR of −88 dBc @ 1 MHz), extremely high com ...
< 1 ... 905 906 907 908 909 910 911 912 913 ... 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