• 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
Circle Diagram for Three Phase Induction Motors
Circle Diagram for Three Phase Induction Motors

HMC706LC3C 数据资料DataSheet下载
HMC706LC3C 数据资料DataSheet下载

R1510L - Zeftronics
R1510L - Zeftronics

... When the engine is running, the voltage regulator keeps the bus voltage constant by controlling the alternator’s field current: increasing it when the system load increases and decreasing it when the load drops.The regulated bus voltage is normally about 14V unless the alternator is self-current lim ...
SR103 Datasheet
SR103 Datasheet

DRV600 数据资料 dataSheet 下载
DRV600 数据资料 dataSheet 下载

... Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such informati ...
16-V to +80-V, Low - Texas Instruments
16-V to +80-V, Low - Texas Instruments

... – 0.6-V Internal Voltage Reference Quiescent Current: 1800 μA (Max) Latch-Up Exceeds 100 mA per JESD78 Package: VSSOP-8 ...
Twelve Channel Multi-Zone Amplifier User Manual Model: MA1260
Twelve Channel Multi-Zone Amplifier User Manual Model: MA1260

Impedance_Matching
Impedance_Matching

... load impedance and to keep the voltage across the load and the current through the load in phase (or as close as possible). Calculate the power delivered to the load, the series combination of RL and LL, in phasor notation at a frequency of 50 kHz. 3. Using the online filter design tool on the EEWeb ...
U-153 UC3855A/B High Performance Power Factor Preregulator
U-153 UC3855A/B High Performance Power Factor Preregulator

Lab1: Resistors
Lab1: Resistors

... forget units. The use of Tables is frequently convenient. Tables. Tables are used to present information. They must be neat and easy to read and understand. Each Table requires a number for reference, a descriptive title, and column headings that describe the data. Units must also be included. Sampl ...
General Specifications Model UP150 Program Temperature Controller
General Specifications Model UP150 Program Temperature Controller

... 10Ω/wire (The resistance values of three wires must be the same.) Allowable input voltage: ±10V DC for thermocouple or DC mV input ±20V DC for DC V input Noise rejection ratio: Normal mode noise: Min. 40dB (50/60Hz) Common mode noise: Min. 120dB (Min. 90dB for DC V input) Error of reference junction ...
Useful Demonstrations for Units 1 to 4
Useful Demonstrations for Units 1 to 4

simulation of matrix converter-fed permanent magnet synchronous
simulation of matrix converter-fed permanent magnet synchronous

Solutions to Problems
Solutions to Problems

... 21. In each case calculate the resistance by using Eq. 18-3 for resistance. © 2005 Pearson Education, Inc., Upper Saddle River, NJ. All rights reserved. This material is protected under all copyright laws as they currently exist. No portion of this material may be reproduced, in any form or by any m ...
iC-SG85 SG4C - iC-Haus
iC-SG85 SG4C - iC-Haus

... The data specified is intended solely for the purpose of product description. No representations or warranties, either express or implied, of merchantability, fitness for a particular purpose or of any other nature are made hereunder with respect to information/specification or the products to which ...
900 MHz RF Transceiver Data Sheet (Rev. 0)
900 MHz RF Transceiver Data Sheet (Rev. 0)

... CMOS synthesizer (Fujitsu MB87006A, Siemens PMB2307, or similar). Logic “1” turns on power to VCO, and divider/prescalers. VBATT connection for regulator. Normally connected to 3.3 V dc or battery. Base connection to external regulator pass transistor (MMBT3906 or similar). Connection for VCO tank c ...
Chapter 3 - Op Amps(PowerPoint Format)
Chapter 3 - Op Amps(PowerPoint Format)

Resistivity Measurements Using the Model 2450 SourceMeter SMU
Resistivity Measurements Using the Model 2450 SourceMeter SMU

REFERENCES - mathapps.net
REFERENCES - mathapps.net

... 1.Mathematics for Electrical Technicians -Levels 4 and 5 by J.O.Bird and A.J.C. May 2.Basic Distribution and Significance Tables 3.Statistics for Engineers by A Greer, published by Stanley Thornes (Publishers)Ltd 4.Mathematics for Technicians-New Level III by A.Greer and G.W. Taylor 5.Mathematics fo ...
MAX9550, MAX9551, MAX9552 大电流、快速建立时间能够为TFT LCD快速恢复VCOM电压
MAX9550, MAX9551, MAX9552 大电流、快速建立时间能够为TFT LCD快速恢复VCOM电压

... To insure buffer stability, place a 1µF low-ESR capacitor as close to the OUT pin as possible. However, this value may be reduced if the TFT-LCD panel load provides some of the capacitance and the resistance in series when this capacitance is low. Connect the feedback at OUT using a Kelvin connectio ...
CMOS Micromechanical Resonator Oscillator
CMOS Micromechanical Resonator Oscillator

AT4050 MULTI-PATTERN CONDENSER MICROPHONE
AT4050 MULTI-PATTERN CONDENSER MICROPHONE

... methods to other industry professionals on request. *1 Pascal = 10 dynes /cm 2 = 10 microbars = 94 dB SPL ...
ICL7135 Datasheet
ICL7135 Datasheet

... output does not saturate. A worst case condition would be a large positive common-mode voltage with a near full scale negative differential input voltage. The negative input signal drives the integrator positive when most of its swing has been used up by the positive common mode voltage. For these c ...
MAX4785–MAX4788 50mA/100mA Current-Limit Switches General Description Features
MAX4785–MAX4788 50mA/100mA Current-Limit Switches General Description Features

... The MAX4785–MAX4788 family of switches feature internal current limiting to prevent host devices from being damaged due to faulty load conditions. These analog switches have a low 0.7Ω on-resistance and operate from a 2.3V to 5.5V input voltage range. They are available with guaranteed 50mA and 100m ...
AN2317
AN2317

... potential source of noise. Disturbances are readily emitted into current measurement circuitry where it will interfere with the actual signal to be measured. Typically, this shows as a non-linear error at small signal amplitudes and non-unity power factors. At unity power factor, voltage and current ...
< 1 ... 1088 1089 1090 1091 1092 1093 1094 1095 1096 ... 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