• 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
10-Bit, 40 MSPS, 3 V, 74 mW Analog-to
10-Bit, 40 MSPS, 3 V, 74 mW Analog-to

... twos complementary output format by using the DFS pin. An out-of-range signal (OTR) indicates an overflow condition that ...
current - Images
current - Images

... • Current is the same at all points • Voltage is shared between components ...
Three-Phase Brushless Motor Driver
Three-Phase Brushless Motor Driver

J44094650
J44094650

MT-032 TUTORIAL  Ideal Voltage Feedback (VFB) Op Amp
MT-032 TUTORIAL Ideal Voltage Feedback (VFB) Op Amp

... to the inverting terminal. This is negative feedback and has many advantages for the designer. These will be discussed more in detail. It should also be noted that the gain is based on the ratio of the resistors, not their actual values. This means that the designer can choose from a wide range of v ...
Installation and Operation Instructions ATL
Installation and Operation Instructions ATL

E-T-A REF 16-S (word file)
E-T-A REF 16-S (word file)

... 4A and 6A and it only disconnects the faulty path in the event of an overload or short circuit in the load circuit without any repercussions on the 24V DC supply. Thus voltage dips are prevented in the event of a failure in one single circuit, without leading to a failure of all loads connected to t ...
Checkpoint Tasks
Checkpoint Tasks

... The two circuits below show different ways circuit components can be connected. Label the components in these circuits and state whether they are series or parallel circuits. Explain your answer. ...
B40C3700/2200 – B380C3700/2200
B40C3700/2200 – B380C3700/2200

LM555 Timer
LM555 Timer

... Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particu ...
Instantaneous Power Measurement using Hall Sensor
Instantaneous Power Measurement using Hall Sensor

Low voltage 16-bit, constant current LED sink driver
Low voltage 16-bit, constant current LED sink driver

... In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum r ...
P21 Homework Set #7
P21 Homework Set #7

Ohm`s Law worksheet This worksheet and all related files
Ohm`s Law worksheet This worksheet and all related files

Chapter 3 - HCC Learning Web
Chapter 3 - HCC Learning Web

... • Voltage is completely used by all the loads – Changes through each load – Voltage drop: amount used or lost through any load or conductor when moving current through that part of the circuit • Sum of the voltage drops of a series circuit equals the voltage being applied to the circuit • Et = E1 + ...
Kirchhoff_Laws
Kirchhoff_Laws

...  VR1 should be treated as a voltage rise.  Following the loop clockwise, it enters V1 and R1 on the negative side of the voltage drop and exits out the positive side. This is a voltage rise as the ...
HMC358MS8G 数据资料DataSheet下载
HMC358MS8G 数据资料DataSheet下载

... VCOs. The HMC358MS8G & HMC358MS8GE integrate resonators, negative resistance devices, varactor diodes, and buffer amplifiers. The VCO’s phase noise performance is excellent over temperature, shock, and process due to the oscillator’s monolithic structure. Power output is 11 dBm typical from a 3V sup ...
Designing A Very High Output Resistance Current Source
Designing A Very High Output Resistance Current Source

Voltage optimisation units
Voltage optimisation units

Circuit Delay Performance Estimation
Circuit Delay Performance Estimation

... • Most digital designs have multiple signal paths and the slowest one of these paths is called the critical path • Timing analyzers can be used to determine this path. • The critical path needs to be optimized and this can be done at any of the following levels: ...
Speed TEMPFET - Temperature Sense Concept
Speed TEMPFET - Temperature Sense Concept

... As long as the temperature of the top chip (thyristor) stays below the minimum thermal trip temperature, the connection between gate and source is blocked and the TEMPFET works like a standard MOSFET. When the thyristor switches on because its temperature exceeds the trip temperature, the thyristor ...
AUTOMATIC HF LINEAR AMPLIFIER
AUTOMATIC HF LINEAR AMPLIFIER

DC Circuits - UCF Physics
DC Circuits - UCF Physics

... • (a) Find the equivalent resistance between points a and b in Figure P28.6. (b) A potential difference of 34.0 V is applied between points a and b. Calculate the current in each resistor. ...
D047031619
D047031619

EEE 490 Final Presentation
EEE 490 Final Presentation

< 1 ... 1658 1659 1660 1661 1662 1663 1664 1665 1666 ... 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