• 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 - Newport Corporation
User`s Guide - Newport Corporation

... The LCM-39425 module requires LDC-3900 firmware version 2.5 or greater. Usage with previous versions of firmware may produce unpredictable results. ...
Document
Document

... networking, which require data links with ever-increasing capacity, have demanded highspeed optical communication systems due to their superiority in low loss, low interference and wide bandwidth performance. Optical communication devices and systems are now being explored not only in long-haul and ...
TPS709 150-mA, 30-V, 1-μA IQ Voltage Regulators with Enable
TPS709 150-mA, 30-V, 1-μA IQ Voltage Regulators with Enable

kcs problem and solution for microelectronic circuit
kcs problem and solution for microelectronic circuit

72-7732A 72-7730A
72-7732A 72-7730A

... l When the Meter working at an effective voltage over 60V in DC or 30V rms in AC, special care should be taken for there is danger of electric shock. l Use the proper terminals, function, and range for your measurements. l If the value to be measured is unknown, use the maximum measurement position. ...
FB400/FB900 Parameter List
FB400/FB900 Parameter List

... (low) input (high) input 19: Voltage (low) input 0 to 1 V DC 20: Voltage (low) input 0 to 100 mV DC 21: Voltage (low) input 0 to 10 mV DC For the measured input 24: Voltage (high) input ±1 V DC 25: Voltage (low) input ±100 mV DC 26: Voltage (low) input ±10 mV DC ...
MAX CHARGE MC-624
MAX CHARGE MC-624

... existing voltage, time at voltage, and field percentage to target values. If values are met, the regulator advances to the next stage. If values are not met, the regulator continues to bulk charge and compares real-time to target values. This will re-occur until all values are met. 5. Ramps down to ...
Project-SW
Project-SW

x - Research Commons@Waikato
x - Research Commons@Waikato

ADL5519 1 MHz to 10 GHz, 62 dB Dual Log Detector/Controller
ADL5519 1 MHz to 10 GHz, 62 dB Dual Log Detector/Controller

... a control voltage to a variable gain amplifier (VGA). Special attention has been paid to minimize the broadband noise of the output pins so that they can be used for controller applications. The ADL5519 is fabricated on a SiGe bipolar IC process and is available in a 5 mm × 5 mm, 32-lead LFCSP with ...
No Slide Title - SCHOOLinSITES
No Slide Title - SCHOOLinSITES

... • A parallel arrangement describes two or more components of a circuit that provide separate conducting paths for current because the components are connected across common points or junctions • Lights wired in parallel have more than one path for current. Parallel circuits do not require all elemen ...
Voltage Collapse Mitigation - pes-psrc
Voltage Collapse Mitigation - pes-psrc

... relatively easy to calculate in off-line studies, but could be a problem in real-time applications, because of the need for system-wide measurement information. Large sensitivity factors reveal both critical generators (those required to supply most of the newly needed reactive power), and critical ...
TBU-DT085-100-WH
TBU-DT085-100-WH

... No current limiting exists in the opposite polarity, and the TBU® device appears as resistive in nature. The reverse current should not exceed the maximum trigger current level of the TBU® device. An external diode may be used to prevent reverse current in DC biased applications. ...
Compact™ 1769-OB16 Solid State 24V dc Source Output Module
Compact™ 1769-OB16 Solid State 24V dc Source Output Module

... such as a metal panel. Additional grounding connections from the module’s mounting tabs or DIN rail (if used), are not required unless the mounting surface cannot be grounded. Refer to Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley publication 1770-4.1, for additional informati ...
AN-940 - Analog Devices
AN-940 - Analog Devices

... If the source resistance is high, the Johnson noise of the source resistance may dominate both the op amp voltage noise and the voltage due to the current noise. However, note that, because the Johnson noise only increases with the square root of the resistance, while the noise voltage due to the cu ...
TBU-DT085-300-WH Datasheet
TBU-DT085-300-WH Datasheet

... No current limiting exists in the opposite polarity, and the TBU® device appears as resistive in nature. The reverse current should not exceed the maximum trigger current level of the TBU® device. An external diode may be used to prevent reverse current in DC biased applications. ...
FAN54015 USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator
FAN54015 USB-Compliant Single-Cell Li-Ion Switching Charger with USB-OTG Boost Regulator

... Safety Timer with Reset Control 1.8 V Regulated Output from VBUS for Auxiliary Circuits ...
Electrical Noise
Electrical Noise

... • Develop mathematical models to take the effects of noise into account when analyzing electrical circuits/systems. • Find ways to reduce noise. ...
connection code
connection code

... The objective of this Section is to ensure the following: (i) All Users or prospective Users are treated equitably. (ii) Any new Connection shall not impose any adverse effects on existing Users, nor shall a new Connection suffer adversely due to existing Users. (iii)By specifying minimum design and ...
CHAPTER 2 Harmonic Analysis of Star-Delta Inverter
CHAPTER 2 Harmonic Analysis of Star-Delta Inverter

... and Assoc. Prof. Dr. Murat FAHRİOĞLU for their updates and corrections on this work. Finally, I would like to thank to Samet BİRİCİK for his help and support in every stage of this work. ...
Chapter 4
Chapter 4

The Triode Board
The Triode Board

... In order not to interfere with anode current metering, the protection circuit senses anode current using a separate resistor R3. The voltage drop across R3 makes current flow through the opto-coupler U1A. This causes an approximately equal current to flow through U1B, RV5 and R24, and this controls ...
SN74LVC1G175-EP 数据资料 dataSheet 下载
SN74LVC1G175-EP 数据资料 dataSheet 下载

... Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been de ...
Improved Deadbeat Current Controller with a Repetitive
Improved Deadbeat Current Controller with a Repetitive

PAK MKII - PAK | Mueller
PAK MKII - PAK | Mueller

... Modules to accommodate ever y signal t ype By having access to all required parameters in one system, a high level of phase accuracy is achieved as analog and digital signals are sampled at exactly the same time. A wide range of Signal Conditioning Modules exist to: •• Measure parameters such as vol ...
< 1 ... 168 169 170 171 172 173 174 175 176 ... 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