• 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
chapter21
chapter21

TGA4022 数据资料DataSheet下载
TGA4022 数据资料DataSheet下载

... TSTG ...
TPS77101-Q1 数据资料 dataSheet 下载
TPS77101-Q1 数据资料 dataSheet 下载

... output current of 150 mA for 3.3-V option) and is directly proportional to the output current. Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is low and independent of output loading (typically 92 µA over the full range of output current, 0 mA to 150 mA). ...
RT9709 - Richtek
RT9709 - Richtek

... Over Temperature Protection (OTP) The RT9709 monitors its own internal temperature to prevent thermal failures. The chip turns off the MOSFET when the internal temperature reaches 140°C with a built-in hysteresis of 50°C. The IC will resume to normal operation until the internal temperature falls to ...
MAX16975 28V, 1.2A Automotive Step-Down Converter with Low Operating Current General Description
MAX16975 28V, 1.2A Automotive Step-Down Converter with Low Operating Current General Description

... automotive buck converter with an integrated high-side switch. The device operates with input voltages from 3.5V to 28V and tolerates input transients up to 42V. During undervoltage events, such as cold-crank conditions, the internal pass device maintains 94% duty cycle for a short time. An open-dra ...
Capacitor Self-Resonance
Capacitor Self-Resonance

... time-varying and a more detailed explanation is required. You can verify that the graphs produced by probe are correct by calculating a few theoretical values and comparing them with the corresponding coordinates on the graphs produced by PSpice. A more sophisticated verification might include calcu ...
NJU3715
NJU3715

... In the STB terminal is "H" level and the clock signals are inputted to the CLK terminal, the serial data into the DATA terminal are shifted in the shift register synchronizing at a rising edge of the clock signal. When the STB terminal is changed to "L" level, the data in the shift register are tran ...
Thanks for reading: Rangkaian Audio Amplifier 25 Watt Mosfet
Thanks for reading: Rangkaian Audio Amplifier 25 Watt Mosfet

... circuit. Its working great. Because Transisitor on the final amplifier will be very hot then add the aluminum finned cooler and the fan so that the transistor is not too high temperatures ...
2016 China International Conference on Electricity Distribution
2016 China International Conference on Electricity Distribution

... this problem, [8] used Symbolic Aggregate Approximation (SAX) to convert the signal into symbols that can be utilized by a pattern detector algorithm to identify the boundaries of the stationary signals within a non stationary signal. [9] used the algorithm combined with HHT and coherence analysis t ...
Isobar 8-Outlet Professional A/V Power Conditioning
Isobar 8-Outlet Professional A/V Power Conditioning

... 5700 joule surge suppression rating with EMI/RFI line noise filtering helps components perform to their full capability! (sharper, crisper video; deeper, fuller audio; and helps maintain longer component life spans) Exclusive Isolated Filter Banks eliminate interference between connected components ...
Electronic Engineering Department, Universitat Politècnica de Catalunya, Barcelona, Spain {aldrete, mateo,
Electronic Engineering Department, Universitat Politècnica de Catalunya, Barcelona, Spain {aldrete, mateo,

... sensing devices is increased by 1ºC is plotted. Figure 9.b shows the voltage sensitivity of the F-DTS compared with its monopolar-ended counterpart. It can be seen that the F-DTS has almost the same sensitivity of the DTS (≈ 8 V/ºC). However the F-DTS presents a larger linear region at the same oper ...
GFAC - Cummins NPower
GFAC - Cummins NPower

MVT 181 - Easun Reyrolle
MVT 181 - Easun Reyrolle

... out. This information is used to introduce a time delay between successive switching of the capacitor banks which allows the capacitor bank to discharge to a safer value after disconnected from a live network. This timer function is a settable one and its output (N/O) contact is used in the closing ...
Gyraf Audio G14
Gyraf Audio G14

... The features of the Gyratec 21 are as follows: The inputs and outputs are floating transformer balanced, without galvanic isolation. Input impedances are rather low - down to a couple of hundred Ohms at extreme settings, so make sure that the unit driving it has enough juice to keep it happy. Most m ...
PageNet88M Manual - Australian Monitor
PageNet88M Manual - Australian Monitor

NTD24N06 - Power MOSFET, 60 V, 24 A, N-Channel
NTD24N06 - Power MOSFET, 60 V, 24 A, N-Channel

FAN6747WL Highly Integrated Green-Mode PWM Controller FAN6747WL — Highly Integra
FAN6747WL Highly Integrated Green-Mode PWM Controller FAN6747WL — Highly Integra

Amp Enable Outputs
Amp Enable Outputs

... the motor I-variable Ix25. All flag inputs must be shorted to the zero-volt reference voltage for the circuit, allowing current to flow through the LEDs in the opto-isolator, in order to be considered in a zero state. The voltage circuit can be configured in various ways utilizing PMAC PC jumpers E8 ...
Team Name - University of Colorado Boulder
Team Name - University of Colorado Boulder

... • If we started this project over we would ensure more carefully that the pieces selected could perform their designated tasks. We would also assign more ambitious deadlines and complete dependent items in a more time efficient manner. • So far, by designating tasks we have been able to work ahead i ...
R210-90-5
R210-90-5

... welders) and electric power converters (adjustablespeed drives, UPS, SCR devices). Such higher frequency loads increase the heat generated within transformer windings and leads by as much as 300%. This can lead to premature failure of standard-design distribution transformers. ...
FUNCTION manual
FUNCTION manual

Local Technical - Florida Building Code
Local Technical - Florida Building Code

View - Shantilal Shah Engineering College,Bhavnagar
View - Shantilal Shah Engineering College,Bhavnagar

High Voltage Power Supplies
High Voltage Power Supplies

... voltage and current output displays, a third display shows one of four settings: output voltage, voltage limit, current limit, or current trip. These values can be set precisely with the front panel keypad. The settings can also be programmed over the IEEE-4888 interface, or the output voltage can b ...
PDF
PDF

< 1 ... 1220 1221 1222 1223 1224 1225 1226 1227 1228 ... 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