• 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
MAX5876 12-Bit, 250Msps, High-Dynamic-Performance, Dual DAC with LVDS Inputs General Description
MAX5876 12-Bit, 250Msps, High-Dynamic-Performance, Dual DAC with LVDS Inputs General Description

... applications found in wireless base stations and other communications applications. Operating from +3.3V and +1.8V supplies, this dual DAC offers exceptional dynamic performance such as 75dBc spurious-free dynamic range (SFDR) at fOUT = 16MHz and supports update rates of 250Msps, with a power dissip ...
GBJ25005 - GBJ2510 Features Mechanical Data
GBJ25005 - GBJ2510 Features Mechanical Data

... Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. LIFE SUPPORT Diodes Incorporated products are specifically n ...
Exp_8_FFT_Spring13b
Exp_8_FFT_Spring13b

What is Electric Current? Can you get a flashlight bulb to light, with a
What is Electric Current? Can you get a flashlight bulb to light, with a

Introduction
Introduction

... Short circuits and ground faults produce extremely high current flow that is tremendously destructive. Overcurrent protection not properly rated for the available short-circuit and ground-fault values of the circuit could explode attempting to clear the fault. ...
Low-Dropout 0.5-A Negative Linear Regulator
Low-Dropout 0.5-A Negative Linear Regulator

Calibration System with Optical Fibers for
Calibration System with Optical Fibers for

... The first system we developed was called the CMB, Calibration and Monitoring Board [5]. It consists of 12 UV LEDs (Fig. 7) with a special fast driver optimized for rectangular pulses. The pulses are 10 ns wide in order to match real signals from hadron showers in the calorimeter as closely as possib ...
MEGOHM BRIDGE
MEGOHM BRIDGE

... MEGOHMS dial. The voltage E applied to the bridge may be measured by a high resistance voltmeter connected across the BRIDGE terminals. The voltmeter resistance must be sufficiently high (at least 1 MO) so that its applicaUon does not affect the bridge voltage. The discharge current flowing out of a ...
MP26053 - Monolithic Power System
MP26053 - Monolithic Power System

... 4.2V, the charger will operate in the constant voltage (CV) mode until the battery is fully charged. The charge current drops during CV mode, and the battery full indication is set when the charge current is reduced to 10% of the programmed constant current value (ICHG). The charge process is then t ...
Performance Evaluation of HVDC Transmission system with
Performance Evaluation of HVDC Transmission system with

... system eliminates the requirement of dc-side circuit breakers in dc power transmission system and filter design by generating higher pulse level. A simplified proposed system steady state model is developed that can be used for power flow analysis. The transient performance is analyze by investigati ...
protective device for pumps / motors
protective device for pumps / motors

... It will be seen that the bi-metal relay connected to the line and set for the rated load of the motor doesn‟t offer any protection during single phasing if the “actual load” on the motor is below about 75% to 80% of the rated load. At the same time to ensure reliable operation on load, the setting o ...


... the closed-loop control of DC–DC converters, where mostly PI modulators are adopted, the modulated error caused by the dead-band will weaken the system performance. Therefore, the dead-band compensation is necessary. This paper presents the quantificational analysis of the dead-band effect and its c ...
Current input function
Current input function

... If needed, the phase currents can be inverted by setting the parameter Starpoint I1-3. This selection applies to each of the channels IL1, IL2 and IL3. The fourth current channel can be inverted by setting the parameter Direction I4. This inversion may be needed in protection functions such as dista ...
PXAC261002FC Thermally-Enhanced High Power RF LDMOS FET Description
PXAC261002FC Thermally-Enhanced High Power RF LDMOS FET Description

... The PXAC261002FC is a 100-watt LDMOS FET with an asymmetrical design intended for use in multi-standard cellular power amplifier applications in the 2496 to 2690 MHz frequency band. Features include dual-path design, high gain and thermally-enhanced package with earless flanges. Manufactured with In ...
All about Digital Input and Digital Output
All about Digital Input and Digital Output

... 1 and Ground. When the event is triggered and received by the camera then the circuit of DO will be powered and the LED will turn on. If your DO device is using high voltage then you may need to add an external relay. Please refer to the Scheme 7 for external relay design. ...
Energy measuring +α
Energy measuring +α

LTM8008 - 72VIN, 6 Output DC/DC SEPIC uModule Regulator
LTM8008 - 72VIN, 6 Output DC/DC SEPIC uModule Regulator

... At the start of each oscillator cycle, a latch turns on the internal power MOSFET switch. The switch current flows through an internal current sensing resistor and generates a voltage proportional to the switch current. This current sense voltage is added to a stabilizing slope compensation ramp and ...
TERMINAL CHARACTERISTIC of a SHUNT DC MOTOR
TERMINAL CHARACTERISTIC of a SHUNT DC MOTOR

Basic Analog Models for CMOS Technology
Basic Analog Models for CMOS Technology

light sensitive light switch installation/operating
light sensitive light switch installation/operating

(
(

... function normalized to the collector current of B.5. Note that the above circuit topology, due to the low photodiode current level, can also be implemented by using MOS transistors working in the subthreshold region. In fact, MOS transistors show an exponential function of the drain current versus t ...
How to Design With TPS65560/TPS65561 Photo Flash Charger and IGBT Driver ..................................................................................
How to Design With TPS65560/TPS65561 Photo Flash Charger and IGBT Driver ..................................................................................

doc
doc

TR, TD Thick Film Planar Resistors and Dividers, Through
TR, TD Thick Film Planar Resistors and Dividers, Through

... Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. Vi ...
25741_ENERGY_CONVERSION_21
25741_ENERGY_CONVERSION_21

< 1 ... 662 663 664 665 666 667 668 669 670 ... 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