• 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
Technical Guide - Panasonic Industrial Devices
Technical Guide - Panasonic Industrial Devices

Atmel ATA6623C/ATA6625C LIN Bus Transceiver with Integrated Voltage Regulator Features DATASHEET
Atmel ATA6623C/ATA6625C LIN Bus Transceiver with Integrated Voltage Regulator Features DATASHEET

... The voltage regulator needs an external capacitor for compensation and to smooth the disturbances from the microcontroller. It is recommended to use an electrolythic capacitor with C > 1.8µF and a ceramic capacitor with C = 100nF. The values of these capacitors can be varied by the customer, dependi ...
Excalibur Chip Set Controller
Excalibur Chip Set Controller

03_ELC4345_Fall2013_MOSFET_Firing_Circuit_PPT
03_ELC4345_Fall2013_MOSFET_Firing_Circuit_PPT

... And, of course, there are conduction losses that are proportional to squared I ...
Ferroelectric Characterization Tutorial
Ferroelectric Characterization Tutorial

ZR4040-4.1 Description Pin Assignments
ZR4040-4.1 Description Pin Assignments

... precision micropower voltage reference of 4.1 volts. The device is available in a small outline surface mount package, ideal for applications where space saving is important, as well as packages for through hole requirements. ...
HPM10 - Power Management IC for Hearing Aids
HPM10 - Power Management IC for Hearing Aids

Diapositive 1 - ESA Microelectronics Section
Diapositive 1 - ESA Microelectronics Section

... current failure mode:  Failure appears in the bird beak zone, side of the transistor itself.  The bird beak oxide thickness increases from the gate oxide thickness (7nm) up to field oxide thickness (~500nm): determination of its radiation hardness is very complex.  Hardening By Design can address ...
examination branch question bank
examination branch question bank

CURRENT MIRROR CIRCUIT WITH ACCURATE MIRROR GAIN
CURRENT MIRROR CIRCUIT WITH ACCURATE MIRROR GAIN

... The current mirror is one of the most basic building blocks used in linear IC design. Although CMOS process have become dominant in applications requiring a large amount of digital circuitry on a chip, BJT circuits in either Bi-MOS or bipolar processes remain popular for high-speed applications due ...
PC107A
PC107A

Circuit Component SLAC for AXE 10
Circuit Component SLAC for AXE 10

MAX9986A SiGe High-Linearity, 815MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch General Description
MAX9986A SiGe High-Linearity, 815MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch General Description

... provides 8.2dB gain, +25dBm IIP3, and 10dB NF for 815MHz to 1000MHz base-station receiver applications. With a 960MHz to 1180MHz LO frequency range, this particular mixer is ideal for high-side LO injection receiver architectures. Low-side LO injection is supported by the MAX9984, which is pin-for-p ...
Series and Parallel Circuits Preamble Series Resistors Kirchoff
Series and Parallel Circuits Preamble Series Resistors Kirchoff

... Resistors in series (i.e., resistors with the same current flowing g through g them)) ...
fulltext
fulltext

... joining metals. It has extensive applications in household appliances and in automotive industries. The traditional approach in relation to spot welding machines is to use 50 Hz welding transformers. The drawback associated with these transformers is that they are both heavy and bulky. Moreover, the ...
Lightolier(r) Controls MultiSet Pro(r) Lighting
Lightolier(r) Controls MultiSet Pro(r) Lighting

... 4.) The complete load current shall be carried by these devices. 5.) The Dimming Amplifier shall be designed to control incandescent, magnetic low voltage incandescent, neon, cold cathode, or general inductive loads. 6.) Dimmer Amplifier rise time shall be restricted by a suitable toroidal filter so ...
Kollmorgen S400 Servo Drive Manual
Kollmorgen S400 Servo Drive Manual

SP211EH 数据资料DataSheet下载
SP211EH 数据资料DataSheet下载

... A typical application of this function would be where a modem is interfaced to a computer in a power-down mode. The ring indicator signal from the modem could be passed through an active receiver in the SP213EH that is itself in the shutdown mode. The ring indicator signal would propagate through th ...
PDF
PDF

An 80 MHz, 80 mW, 8-bit Folding ADC with
An 80 MHz, 80 mW, 8-bit Folding ADC with

... transfer function of the input gain stages is therefore mainly required in 1/16 of the input range of the A/D converter. The zero crossings required for the 32 folding signals are generated via combination and interpolation of the output signals of the input track-and-hold gain stages. Finally, each ...
A New Look At An Old Friend
A New Look At An Old Friend

THE LCD ANODIZING SYSTEM
THE LCD ANODIZING SYSTEM

Tesla coil theory and applications
Tesla coil theory and applications

... Spark gap should be constructed of two parallel plates with adjustable distance. One of then is usually solid and the other is attached at the end of a bolt which could be rotated to adjust the distance. It could be also made of just an adjustable gap made for example with two brass rods. In gure 7 ...
nSP5 PCD - Acuity Support
nSP5 PCD - Acuity Support

... (ballast) load, a 120/277 VAC magnetic low voltage (inductive) load, or a 120 VAC electronic low voltage (non-inductive) load. The nSP5 PCD 2W version dims the switched line voltage connection going to a 2-wire dimming ballast or incandescent lamp. The nSP5 PCD MLV version is designed to dim low vol ...
Lab-25-(Millikan Oil Drop Experiment User`s Manual)
Lab-25-(Millikan Oil Drop Experiment User`s Manual)

< 1 ... 138 139 140 141 142 143 144 145 146 ... 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