• 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
PZ210E User Manual E-462 Piezo Amplifier Release: 1.1.0 Date: 20
PZ210E User Manual E-462 Piezo Amplifier Release: 1.1.0 Date: 20

FJB102 High Voltage Power Darlington Transistor F JB
FJB102 High Voltage Power Darlington Transistor F JB

... SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: ...
ECE 541 – Lecture 4 Wilkonson Power Divider
ECE 541 – Lecture 4 Wilkonson Power Divider

... Text Section 7.3 How do you design a Wilkinson Power Divider? See for example Chapter 7 Problems 9,10 Wilkinson Power Divider: Matched at all ports Complete isolation between output ports Lossless when output ports are matched. Lossy when they are not (only reflected power is lost). ...
Complex Power
Complex Power

chapter17
chapter17

Electricity - Glen Rose FFA
Electricity - Glen Rose FFA

... 1. Electricity is generated at 12,500-25,000 volts 2. Goes through step up transformer – upped to 138,000-765,000 volts 3. Carried through transmission lines ...
PPT
PPT

... Voltage, Current, Power, Battery packs and Temperature Motor Vehicle speed Motor torque Motor controller status (on/off) Vehicle location (GPS) Outdoor and cabin ambient temperature ...
FTZ30E
FTZ30E

Application of Field Emitter Arrays to Microwave Power Amplifiers
Application of Field Emitter Arrays to Microwave Power Amplifiers

... traveling wave tube amplifier. Issues of beam control and focus at high current density and low magnetic field are addressed as well as issues relating to the inherent high emittance of the FEA beam and cathode protection from ion bombardment. Large signal, non-linear RF-modulated FEA-TWT interactio ...
Portable Solar Power Supply
Portable Solar Power Supply

How step-motor performance
How step-motor performance

V OUT - Faculty
V OUT - Faculty

... • This gives the thermistor elements a relatively high temperature coefficient. ...
What is a Silicon Transient Voltage Suppressor and how does it
What is a Silicon Transient Voltage Suppressor and how does it

6.3.1 worksheet - Digilent Learn site
6.3.1 worksheet - Digilent Learn site

... 4. Attach to this worksheet an image of the oscilloscope window, showing the capacitor voltage and current waveforms and the measured amplitudes of the waveforms for a 100Hz triangular input. (8 pts) ...
DN262 - SOT-23 1kHz to 30MHz Oscillator with
DN262 - SOT-23 1kHz to 30MHz Oscillator with

... between the power supply and an input pin (SET) programs the frequency of a master oscillator to a value between 100kHz and 30MHz. An internal clock divider is programmed using a three-state input pin (DIV) to divide the master oscillator frequency by 1, 10 or 100 before driving the output. This ext ...
The primary current, , in a conductor through a magnetic core will
The primary current, , in a conductor through a magnetic core will

... If there is no power lost in the toroid and the compensation winding,  then the equivalent insertion impedance,  , of the Current Transducer  can be estimated by equating the power dissipated in  with the power  dissipated in the Burden Resistor  . This shows that the equivalent  insertion impedanc ...
Lab Assignment 3
Lab Assignment 3

... output, the predicted output current is infinitely large, a very non-practical result. In the Norton case (current source without a resistor), the open circuit output voltage will be infinitely large. We then have a circuit that will have a voltage breakdown if we don’t provide a load at the output. ...
Chapter 17
Chapter 17

... Non-ohmic materials are those whose resistance changes with voltage or current The current-voltage relationship is nonlinear A diode is a common example of a nonohmic device ...
Section G9: Inverting Amplifier
Section G9: Inverting Amplifier

2STA1695
2STA1695

... Output characteristics ...
HY-DIV168N-3 - Pennybuying Offical Blog | The Offical Blog Of
HY-DIV168N-3 - Pennybuying Offical Blog | The Offical Blog Of

... 2 DC 12 ~ 48V power supply, the internal integration of 12V and 5V regulator 3 optically isolated signal input / output 4, overvoltage, undervoltage, overcurrent, and white short-circuit protection 5 4 file segmentation and automatic half-streaming capabilities up to 16 segments 4 file output phase ...
Series connection of IGBTs
Series connection of IGBTs

... 2 series connected modules double the blocking, but not the insulation capability ! This means: an additional insulation between module and heatsink is required ! solution: 1) 3-level-circuit → grounding of the mid-point possible Dr. Schütze SM PD ...
CAT6220 300 mA Adjustable Voltage LDO Regulator
CAT6220 300 mA Adjustable Voltage LDO Regulator

... The CAT6220 is a 300 mA CMOS low dropout regulator whose output voltage is user adjustable that provides fast response time during load current and line voltage changes. With 1 mA of shutdown current, an internal no−load operating current of only 10 mA, and full−load operating current of 40 mA, the ...
op-amps
op-amps

... their ideal operation in noninverting configuration ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

< 1 ... 1783 1784 1785 1786 1787 1788 1789 1790 1791 ... 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