• 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
Nodal Analysis
Nodal Analysis

... I 7  I1  I 2  I 6 I 2  I3  I 4 I 4  I5 I3  I5  I6 V 1  Vin ...
measurement of the charge/mass ratio for electrions
measurement of the charge/mass ratio for electrions

... 2) WAIT. The voltage supply needs to heat electrons off and if you raise your hand immediately and say “Mine isn’t working” it is like when you try to boil water and complaining that it doesn’t work at soon as you turn on the stove. You are going to be boiling off electrons and it may take a couple ...
a AN-419 APPLICATION NOTE •
a AN-419 APPLICATION NOTE •

... a popular device used to implement a low cost, high speed, digital synthesis system. Clocking the AD9850 at its maximum rate of 125 MHz may present some technical challenges especially in applications where the phase noise of the sine output is a major concern. Numerous requests for recommended high ...
J-FET (Junction Field Effect Transistor)
J-FET (Junction Field Effect Transistor)

Ch 23 Series and Parallel Circuits
Ch 23 Series and Parallel Circuits

... a. The current through the 20- resistor would be unchanged. b. The sum of the current in the branches of the circuit would change. c. The total current through the generator would change. d. The current through the 50- resistor would change. 18. Which of the following is true for this circuit? a. ...
- V
- V

... source of voltage • Later: Non-ideal batteries will be dealt with in terms of an "internal resistance". ...
412 Laboratory 5 new..
412 Laboratory 5 new..

... voltage VC, and base current IB . Q1: Using the values measured in step 2, calculate the DC collector current IC and DC emitter current IE. ...
Automatic Voltage Control
Automatic Voltage Control

Current transducer LF 1010-S/SPA3 I = 1000 A
Current transducer LF 1010-S/SPA3 I = 1000 A

... On the other hand, measured values are part of a statistical distribution that can be specified by an interval with upper and lower limits and a probability for measured values to lie within this interval. Unless otherwise stated (e.g. “100 % tested”), the LEM definition for such intervals designate ...
3.1.2.A Flip Flop Applications
3.1.2.A Flip Flop Applications

Photon-Counting Means Sensitivity
Photon-Counting Means Sensitivity

... constant, which is an inherent part of analog systems’ electronics. (The RC time-constant refers to an electronic circuit made of a resistor and capacitor.) Analog systems rely on RC time-constants to reduce noise, but thereby extract a price. One problem introduced by the RC time-constant is accura ...
block diagram of m-qube surviellance system
block diagram of m-qube surviellance system

... • Passive Infrareds sensors (PIRs) are electronic devices which are used in some security alarm systems to detect motion of an infrared emitting source, usually a human body. ...
DC Circuits Lab - George Washington University
DC Circuits Lab - George Washington University

ST4460FX
ST4460FX

... ST4460FX High voltage fast-switching NPN Power transistor ...
paper
paper

... As shown in Fig. 4, allowing for adjustable termination means that part of the termination impedance is determined by the transistor on-resistance, Ron. We need to find this value to reliably interpret measurements and can determine it by assuming that that the local variation in the passive compone ...
File - King`s Senior Science
File - King`s Senior Science

... theorized that electric current was due to a positive charge moving from the positive terminal to the negative terminal. However, it was later discovered that it is the movement of the negatively charged electron that is responsible for electrical current. Rather than changing several centuries of t ...
Pulse Width/Pulse Train Module
Pulse Width/Pulse Train Module

... * Differential output module has only one output * Outputs use ET727 10-30V output chips with 20mA drive and short circuit protection * Pins 10 & 8 become positive and Pins 9 & 7 become negative terminals in case of differential outputs. ...


Resonant circuits – measuring inductance
Resonant circuits – measuring inductance

... We will define the resonant frequency f0 for the LCR resonant circuit (or filter) as the frequency at which the input voltage and input current are in phase. (More accurately this frequency is called the phase resonance frequency.) In the circuit shown on the following page, u1 and u2 will have 0° p ...
KD2004-CG10A
KD2004-CG10A

... otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design. ...
OP297
OP297

... rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute ...
AC/DC Current Probe Model SL206 Features
AC/DC Current Probe Model SL206 Features

... current measurement capabilities using Hall effect technology. It measures from a few mA to over 100A. The “screw driver” shape, with its narrow elongated prod, was chosen to permit probing in crowded cable bundles, or measuring in tight areas such as on circuit boards, motor controllers and automot ...
MMBTH 1 0 RG
MMBTH 1 0 RG

... NPN RF Transistor C ...
Slides - GSI Indico
Slides - GSI Indico

EE2003 Circuit Theory
EE2003 Circuit Theory

... of a voltage source VTH in series with a resistor RTH, where • VTH is the open-circuit voltage at the terminals. • RTH is the input or equivalent resistance at the terminals when the independent sources are turned off. ...
< 1 ... 1632 1633 1634 1635 1636 1637 1638 1639 1640 ... 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