• 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
Application Note 181 3-Terminal Regulator is Adjustable
Application Note 181 3-Terminal Regulator is Adjustable

... voltage while R1 provides the 5 mA programming current. The 2 capacitors on the adjustment and output terminals are optional for improved performance. Bypassing the adjustment terminal to ground improves ripple rejection. This bypass capacitor prevents ripple from being amplified as the output volta ...
An introduction to AC/DC power supply as a simple system
An introduction to AC/DC power supply as a simple system

MD1802FX
MD1802FX

... The MD1802FX is manufactured using Diffused Collector in Planar Technology adopting new and enhanced high voltage structure. The new MD ...
- Texas Instruments
- Texas Instruments

Lecture7 Integrated Circuits
Lecture7 Integrated Circuits

... • Outputs don’t instantaneously reflect input changes • Propagation delay is a measure of this time • Delay from H to L can be different than from L to H ...
Panning for Fun - the GEO Home Page
Panning for Fun - the GEO Home Page

... Another panning application - panning one source to two outputs. You might use this to pan one guitar between two effects chains. You may be able to pan between two amps; but remember, that application is fraught with hum problems, and this circuit will not make the hum issues better or worse. I hav ...
Lecture Notes - Practical AC Circuits File
Lecture Notes - Practical AC Circuits File

... Phase of Vi has been changed by  = tan 1 Leading Output. ...
MAX44281 Ultra-Small, Ultra-Thin, 4-Bump Op Amp General Description Benefits and Features
MAX44281 Ultra-Small, Ultra-Thin, 4-Bump Op Amp General Description Benefits and Features

... device enters shutdown. Since shutdown is triggered by lowering the supply voltage to below 0.5V, the ESD protection diodes at the output limit the high-Z voltage range of the output. Diode D2 in Figure 2, from the output of the amplifier to VDD, is forward biased when the output voltage becomes too ...
TN 5900-1 Triboelectric Effects in High Precision Temperature
TN 5900-1 Triboelectric Effects in High Precision Temperature

... influence measurement accuracy and stability. The LDT-5900 uses a thermistor to sense the load temperature at 10 µA or 100 µA depending on the load temperature range. An analog-to-digital (A/D) converter measures the voltage drop across the thermistor, and converts that voltage to a resistance value ...
Design and Computer Modeling of Ultracapacitor Regenerative
Design and Computer Modeling of Ultracapacitor Regenerative

... was clear that the system would need a boost converter to make use of the reclaimed energy. A simulation of the most efficient boost converter was designed using LT Spice and the real circuit is ready to be installed in the scooter. Once installed, the live performance of the scooter will be compare ...
single phase inverte - Solid State Controls, Inc.
single phase inverte - Solid State Controls, Inc.

RMSL-5012 OG
RMSL-5012 OG

... DuraComm warrants to the initial end user, each power supply manufactured by DuraComm to be free from defects in material and workmanship, when in normal use and service for a period of three year from the date of purchase, from an authorized DuraComm dealer. Should a product manufactured by DuraCom ...
CESO_SEMINARS_2002_AMT_Presentation_June_10_02
CESO_SEMINARS_2002_AMT_Presentation_June_10_02

Monday, Oct. 10, 2005
Monday, Oct. 10, 2005

1 - s3.amazonaws.com
1 - s3.amazonaws.com

... which is the element gjj of G matrix, is the sum of all the conductances connected to node j. The coefficient of any other node voltage, say i (ij), is the negative of the sum of the conductances connected directly between node j and node i. The right hand side of the equation is equal to the sum o ...
1 - Pravin Shetty > Resume
1 - Pravin Shetty > Resume

... The problem with this is that it is difficult to distinguish a series of '1's or '0's due to clock synchronisation issues. Also, the average DC voltage is 1/2V so there is high power output. In addition, the bandwidth is large i.e. from 0Hz to half the data rate because for every full signal wave, t ...
NSS30101LT1G
NSS30101LT1G

... are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor doe ...
raise - lower (set-point) / ramp generator
raise - lower (set-point) / ramp generator

On Solving Nonlinear Differential Equations by Windows PSpice
On Solving Nonlinear Differential Equations by Windows PSpice

... On Solving Nonlinear Differential Equations by Windows PSpice Software packages such as Mathematica, Mathcad, or Matlab can be used to solve nonlinear differential equations, but in this paper the CAD tool DesignLab, a version of Windows PSpice, is used to achieve the same purpose. DesignLab is orig ...
5. Output Voltage Trimming
5. Output Voltage Trimming

IPN = 500 .. 1000 A AC/DC Current Transducer DHR-C10
IPN = 500 .. 1000 A AC/DC Current Transducer DHR-C10

... mV/K ...
MAX846A Cost-Saving Multichemistry Battery-Charger System _______________General Description
MAX846A Cost-Saving Multichemistry Battery-Charger System _______________General Description

... The voltage/current regulator consists of a precision attenuator, voltage loop, current-sense amplifier, and current loop. The attenuator can be pin programmed to set the regulation voltage for one or two Li-Ion cells (4.2V and 8.4V, respectively). The current-sense amplifier is configured to sense ...
SDA-5000 数据资料DataSheet下载
SDA-5000 数据资料DataSheet下载

... Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Absolute Maximum Rating conditions is not implied. RoHS status based on EUDirective2002/95/EC (at time of this document revision). The information in this publicat ...
Lesson Plan
Lesson Plan

... 1. Students should read the appropriate curriculum material for how computers work (depending on the text/curriculum being used for this course). This lesson can be taught with only the PowerPoint presentation and the equipment outlined above. Introduction MI ...
voltage / current calibrator
voltage / current calibrator

... is in place and fastened securely. BATTERY INSTALLATION WARNING: To avoid electric shock, disconnect the test leads from any source of voltage before removing the battery door. 1. Disconnect the test leads from the meter. 2. Open the battery door by loosening the ...
< 1 ... 1514 1515 1516 1517 1518 1519 1520 1521 1522 ... 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