• 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
QUASAR ELECTRONICS KIT 1092 IN–CAR AIR IONISER
QUASAR ELECTRONICS KIT 1092 IN–CAR AIR IONISER

... The negative ions that are being transmitted by the probe are used to clean the atmosphere of the car from the dust and the smoke. Since the voltage, that is delivering to the probe is very high, a small amount of ozone is possible to be produced. This can, on the one hand, have certain advantages a ...
Resistive Heating - Physics 420 UBC Physics Demonstrations
Resistive Heating - Physics 420 UBC Physics Demonstrations

... them and so it cooks/burns your toast. ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)

ES100_Lecture 3
ES100_Lecture 3

... The maximum power transfer theorem states that: A Load will receive maximum power from a linear bilateral dc network when its total resistance value is exactly equal to the RTH of the network Maximum power transfer is extremely important for maximum efficiency of a transmission and distribution netw ...
a AN-369 APPLICATION NOTE
a AN-369 APPLICATION NOTE

150LECTURE15 DIODES Lecture Notes Page
150LECTURE15 DIODES Lecture Notes Page

Light Puzzle
Light Puzzle

... Investigation: Light Puzzle Modify this table as necessary to match the number of switches and bulbs in this circuit ...
14.8 Longitudinal Output Voltage, VDSL/VDSL2 Terminal
14.8 Longitudinal Output Voltage, VDSL/VDSL2 Terminal

... pair cable plant. In other words, LOV limits are necessary to limit crosstalk. LOV limits have been crafted to allow higher levels around the equipment’s operating band. This is necessary as a common mode image of the desired differential mode signal results through imbalance in the line interface, ...
14.2 The Flow of Electric Charge
14.2 The Flow of Electric Charge

instruction manual
instruction manual

... 2.2.1.4 Used as the CV output, in general the CC adjustment (2) and (17) should be set to maximum, but for this unit, the current-limiting protection point can also be set arbitrarily. Setting procedure: turn on power, rotate counterclockwise the CC adjustment (2) and (17) to minimum, then make the ...
WHM2025AE
WHM2025AE

... The recommended motherboard layout is shown in diagram of Foot Print/Mounting Layout. Sufficient numbers of ground vias on center ground pad are essential for the RF grounding. The width of the 50-Ohm microstrip lines at the input and output RF ports may be different for different property of the su ...
Force Sensitive Resistor (FSR) Sensor Lab
Force Sensitive Resistor (FSR) Sensor Lab

PQSys. Instantaneous Values
PQSys. Instantaneous Values

... recorders with different sampling frequencies. They differ in the level of detailing and length of recording time. The system offers a huge spectrum of trigger criteria to start recorders. Recording time and pre trigger time are free selectable. With the “retrigger function” the analyzer can adjust ...
- Senior Design
- Senior Design

Resistance and Ohm’s Law
Resistance and Ohm’s Law

... Resistance is the property of substances that impedes the free flow of electrons. It is measured in units of Ohms (W). ...
S4803126135
S4803126135

EE 1231216
EE 1231216

Department of Electrical and Computer Engineering Power Systems Name:__________________________________
Department of Electrical and Computer Engineering Power Systems Name:__________________________________

... highlighting the advantages and disadvantages of each method. Give at least one example where de‐coupled load flow solution is useful. [4 marks] A simple 3 bus power system is shown in Fig. 2. All admittances are given in pu on a common base. Voltage at bus ‐1 is controlled at 1.0 pu ...
Dual Schottky Barrier Diode, 2 V
Dual Schottky Barrier Diode, 2 V

... Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment. The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpos ...
1200v/150a three phase bridge pem with brake
1200v/150a three phase bridge pem with brake

Fundamentals of Passive Component Behavior at High Frequencies
Fundamentals of Passive Component Behavior at High Frequencies

Differential Voltage Probe
Differential Voltage Probe

... calibration before shipping it. You can simply use the appropriate calibration file that is stored in your data-collection program from Vernier. The output of this system is linear with respect to the measurement it is making. As mentioned before, the amplifier allows you to measure positive and neg ...
iVolt-Brochure
iVolt-Brochure

Procedure and Datasheet
Procedure and Datasheet

PHY104 Lab 7: Kirchoff`s Rules
PHY104 Lab 7: Kirchoff`s Rules

< 1 ... 1471 1472 1473 1474 1475 1476 1477 1478 1479 ... 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