• 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
8-NEC Changes for PV in 2014-SolarABCs 2013-7
8-NEC Changes for PV in 2014-SolarABCs 2013-7

Applications of Diodes Word Document
Applications of Diodes Word Document

... We can see from the characteristic that below 0.5V, no current flows through the diode. As the voltage increases from 0.5V the current flowing starts to increase, slowly at first and as the voltage reaches 0.7V the increase in current becomes much more significant. Indeed the current can increase mu ...
BAS116...
BAS116...

... and all warranties and liabilities of any kind, including without limitation warranties of non-infringement of intellectual property rights of any third party. ...
AC/DC Power Supplies
AC/DC Power Supplies

May 2004 Single Device Tracks and Monitors Five Supplies
May 2004 Single Device Tracks and Monitors Five Supplies

... operational levels. All five supplies must concurrently exceed their monitor threshold voltages before ramp-up begins. A user-adjustable timer holds off the start of load ramping, and all supplies must continuously exceed the threshold voltage levels during this period. This time delay, set by the c ...
STFI10NK60Z
STFI10NK60Z

... IGS= ± 1 mA ...
Experiment 16: Series and Parallel Circuits
Experiment 16: Series and Parallel Circuits

... 1. Why should the voltage drops (electric potential differences) across the resistors connected in parallel be the same? Were your values equal? 2. Calculate the equivalent resistance of each of the first three circuits you constructed for this experiment using your measured values. Show each step i ...
ECE 331:  Electronics Principles I Fall 2013
ECE 331: Electronics Principles I Fall 2013

Third Harmonics Injection Applied To Three Phase/Three Level
Third Harmonics Injection Applied To Three Phase/Three Level

BGA614 - Infineon
BGA614 - Infineon

Thermistors
Thermistors

... Contrast <<--->> Common carbon resistors, made from carbon powder mixed with a phenolic binder glue. ...
Lucalox™ PSL (PhotoSynthesis Light) Tubular Clear Product
Lucalox™ PSL (PhotoSynthesis Light) Tubular Clear Product

Aalborg Universitet Model Predictive Current Control for High-Power Grid-Connected Converters with
Aalborg Universitet Model Predictive Current Control for High-Power Grid-Connected Converters with

... the total power installed will double in a few years [1]. Tied to this growth the power delivered by each wind turbine generator (WTG) has also increased. It is expected that connection with the grid through a full-scale converter will be the preferred technical solution since this allows decoupled ...
Chapter27
Chapter27

... An ohmic device The resistance is constant over a wide range of voltages The relationship between current and voltage is linear The slope is related to the resistance ...
Analysis and Design of Switched Capacitor
Analysis and Design of Switched Capacitor

... required equivalent resistance is not to exceed 1.25 R. For simplicity of control, the upper devices were chosen to be pchannel MOSFETs (IM5210,60 mil) while the lower devices were chosen to be n-channel MOSFETs (IRF540, 62 d). The polymer electrolytic 180 pF capacitor listed in Table 1 is used for ...
AD8074/AD8075 500 MHz, G = +1 and +2 Triple
AD8074/AD8075 500 MHz, G = +1 and +2 Triple

... the devices have high peak slew rates, maintaining their bandwidth for large signals. Additionally, the buffers are compensated for high phase margin, minimizing overshoot for good pixel resolution. The buffers also have video specifications that are suitable for buffering NTSC or PAL composite sign ...
Multi Stage Amplifiers
Multi Stage Amplifiers

... The first cut off frequency lies in low frequency range, in which the impedance by coupling capacitor Cc is comparable to the collector resistance Rc. Thus it largely the current amplification. The second cut-off frequency lies in the high frequency range where the area offered by coupling capacitor ...
Analogical Modelling and Numerical Simulation of the Single
Analogical Modelling and Numerical Simulation of the Single

... that represent the analogical model based on the state variables of the single-phase resolver. The two state variables are the currents i1(t) = i10 and i2(t) = i20 and the input signal is u1(t) = u10. For this signals the second index corresponds with the order of the derivative in respect with time ...
ACD-10 Pro and ACD-10 TRMS Pro Product Manual
ACD-10 Pro and ACD-10 TRMS Pro Product Manual

... Inputs are made through the test leads terminals. Slide-switch on defaults at Ω. Press Diode test function. Normal forward SELECT button momentarily 2 times to select voltage drop (forward biased) for a good silicon diode is between 0.400V to 0.900V. A reading higher than that indicates a leaky diod ...
University of North Carolina, Charlotte Department of Electrical and Computer Engineering
University of North Carolina, Charlotte Department of Electrical and Computer Engineering

... pole frequency for this circuit? Which is lower in frequency, your pole or your zero? You should be able to answer based on your pole and zero equations. Why is this desirable for a bass-boost circuit? To answer, you’ll need to remember how a pole and zero affect the magnitude of the gain. We want t ...
EVC4000 Instruction Manual - World Precision Instruments
EVC4000 Instruction Manual - World Precision Instruments

... allows the user to dial a resistance value, empirically determined, that enables the voltage clamp to compensate the voltage error that is caused by clamp current flowing through the electrolyte path between the voltage electrodes and the membrane surface. The push button injects an arbitrary DC cur ...
Making a Shaker (or Forever) Flashlight
Making a Shaker (or Forever) Flashlight

v1500 power amplifier
v1500 power amplifier

... The power amplifier shall have two channels. Each channel shall deliver a minimum of 400 watts at 8 ohms, 750 watts at 4 ohms and 1000 watts at 2 ohms, 1kHz, 1% THD+N. In bridged mono mode, it shall deliver 1500 watts at 8 ohms and 2000 watts into 4 ohms, 1kHz, 1% THD+N. The amplifier shall have cir ...
Application Note
Application Note

... LED Lighting The Constant Current driver offers a versatile power solution for a wide variety of LED lighting products. For super-bright LEDs, the forward voltage range may be 3 to 3.5 V and the same constant current driver can be used. The selected current will be maintained regardless of the forwa ...
Introduction to PLC’s
Introduction to PLC’s

< 1 ... 1266 1267 1268 1269 1270 1271 1272 1273 1274 ... 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